2024-06-17 13:33.38: New job: test c-cube/iter https://github.com/c-cube/iter.git#refs/heads/main (fc69ce4c919cdd04fb5041410fd61d5a3f742702) (linux-x86_64:ubuntu-24.04-5.2_opam-2.1)Base: ocaml/opam@sha256:a378dcb9ae889d9a5c5a275ce34087e86b7094ca987c9faef10cee5071dc260aOpam project buildTo reproduce locally:git clone --recursive "https://github.com/c-cube/iter.git" -b "main" && cd "iter" && git reset --hard fc69ce4ccat > Dockerfile <<'END-OF-DOCKERFILE'FROM ocaml/opam@sha256:a378dcb9ae889d9a5c5a275ce34087e86b7094ca987c9faef10cee5071dc260a# ubuntu-24.04-5.2_opam-2.1USER 1000:1000ENV CLICOLOR_FORCE="1"ENV OPAMCOLOR="always"WORKDIR /srcRUN sudo ln -f /usr/bin/opam-2.1 /usr/bin/opamRUN opam init --reinit -niRUN uname -rs && opam exec -- ocaml -version && opam --versionWORKDIR /srcRUN sudo chown opam /srcRUN cd ~/opam-repository && (git cat-file -e a6069b9eebba0e2b70cdbbd834bc800eb6d671fb || git fetch origin master) && git reset -q --hard a6069b9eebba0e2b70cdbbd834bc800eb6d671fb && git log --no-decorate -n1 --oneline && opam update -uCOPY --chown=1000:1000 iter.opam ./RUN opam pin add -yn iter.dev './'ENV DEPS="astring.0.8.5 base-bigarray.base base-domains.base base-nnp.base base-threads.base base-unix.base camlp-streams.5.0.1 cmdliner.1.3.0 cppo.1.6.9 csexp.1.5.2 dune.3.16.0 fmt.0.9.0 host-arch-x86_64.1 host-system-other.1 logs.0.7.0 mdx.2.4.1 ocaml.5.2.0 ocaml-base-compiler.5.2.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml-version.3.6.7 ocamlbuild.0.14.3 ocamlfind.1.9.6 ounit2.2.2.7 qcheck-core.0.21.3 re.1.11.0 result.1.5 seq.base stdlib-shims.0.3.0 topkg.1.0.7"ENV CI="true"ENV OCAMLCI="true"RUN opam update --depexts && opam install --cli=2.1 --depext-only -y iter.dev $DEPSRUN opam install $DEPSCOPY --chown=1000:1000 . /srcRUN opam exec -- dune build @install @check @runtest && rm -rf _buildEND-OF-DOCKERFILEdocker build .END-REPRO-BLOCK2024-06-17 13:33.38: Using cache hint "c-cube/iter-ocaml/opam@sha256:a378dcb9ae889d9a5c5a275ce34087e86b7094ca987c9faef10cee5071dc260a-ubuntu-24.04-5.2_opam-2.1-bbad9b579d4f7b3976239526ab584757"2024-06-17 13:33.38: Using OBuilder spec:((from ocaml/opam@sha256:a378dcb9ae889d9a5c5a275ce34087e86b7094ca987c9faef10cee5071dc260a)(comment ubuntu-24.04-5.2_opam-2.1)(user (uid 1000) (gid 1000))(env CLICOLOR_FORCE 1)(env OPAMCOLOR always)(workdir /src)(run (shell "sudo ln -f /usr/bin/opam-2.1 /usr/bin/opam"))(run (shell "opam init --reinit -ni"))(run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))(workdir /src)(run (shell "sudo chown opam /src"))(run (cache (opam-archives (target /home/opam/.opam/download-cache)))(network host)(shell "cd ~/opam-repository && (git cat-file -e a6069b9eebba0e2b70cdbbd834bc800eb6d671fb || git fetch origin master) && git reset -q --hard a6069b9eebba0e2b70cdbbd834bc800eb6d671fb && git log --no-decorate -n1 --oneline && opam update -u"))(copy (src iter.opam) (dst ./))(run (network host)(shell "opam pin add -yn iter.dev './'"))(env DEPS "astring.0.8.5 base-bigarray.base base-domains.base base-nnp.base base-threads.base base-unix.base camlp-streams.5.0.1 cmdliner.1.3.0 cppo.1.6.9 csexp.1.5.2 dune.3.16.0 fmt.0.9.0 host-arch-x86_64.1 host-system-other.1 logs.0.7.0 mdx.2.4.1 ocaml.5.2.0 ocaml-base-compiler.5.2.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml-version.3.6.7 ocamlbuild.0.14.3 ocamlfind.1.9.6 ounit2.2.2.7 qcheck-core.0.21.3 re.1.11.0 result.1.5 seq.base stdlib-shims.0.3.0 topkg.1.0.7")(env CI true)(env OCAMLCI true)(run (cache (opam-archives (target /home/opam/.opam/download-cache)))(network host)(shell "opam update --depexts && opam install --cli=2.1 --depext-only -y iter.dev $DEPS"))(run (cache (opam-archives (target /home/opam/.opam/download-cache)))(network host)(shell "opam install $DEPS"))(copy (src .) (dst /src))(run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build")))2024-06-17 13:33.38: Waiting for resource in pool OCluster2024-06-19 16:20.03: Waiting for worker…2024-06-19 16:23.39: Got resource from pool OClusterBuilding on x86-bm-c9.sw.ocaml.orghint: Using 'master' as the name for the initial branch. This default branch namehint: is subject to change. To configure the initial branch name to use in allhint: of your new repositories, which will suppress this warning, call:hint:hint: git config --global init.defaultBranch <name>hint:hint: Names commonly chosen instead of 'master' are 'main', 'trunk' andhint: 'development'. The just-created branch can be renamed via this command:hint:hint: git branch -m <name>Initialized empty Git repository in /var/cache/obuilder/ocluster/git/iter.git-8f912dfd1e1fdbb9c6ccc62d6c2b80a3f39c22e2/.git/HEAD is now at fc69ce4 faster doc build(from ocaml/opam@sha256:a378dcb9ae889d9a5c5a275ce34087e86b7094ca987c9faef10cee5071dc260a)2024-06-19 16:23.40 ---> using "ae5b5e47aae07df97142c46026fc224baa9248fb591ccf65a09396f2b2a8e7ca" from cache/: (comment ubuntu-24.04-5.2_opam-2.1)/: (user (uid 1000) (gid 1000))/: (env CLICOLOR_FORCE 1)/: (env OPAMCOLOR always)/: (workdir /src)/src: (run (shell "sudo ln -f /usr/bin/opam-2.1 /usr/bin/opam"))2024-06-19 16:23.40 ---> using "14fcb6997fcad112040783b583a29ebd156430ae820afe3a200d2db65e5d1461" from cache/src: (run (shell "opam init --reinit -ni"))Configuring from /home/opam/.opamrc and then from built-in defaults.Checking for available remotes: rsync and local, git.- you won't be able to use mercurial repositories unless you install the hg command on your system.- you won't be able to use darcs repositories unless you install the darcs command on your system.This version of opam requires an update to the layout of /home/opam/.opam from version 2.0 to version 2.1, which can't be reverted.You may want to back it up before going further.Continue? [Y/n] yFormat upgrade done.<><> Updating repositories ><><><><><><><><><><><><><><><><><><><><><><><><><><>[default] synchronised from file:///home/opam/opam-repository2024-06-19 16:23.40 ---> using "9b351f6374c78fae007925419503cebd8f52ffa1e814a6a5e592c70e25b90e1b" from cache/src: (run (shell "uname -rs && opam exec -- ocaml -version && opam --version"))Linux 5.15.0-112-genericThe OCaml toplevel, version 5.2.02.1.62024-06-19 16:23.40 ---> using "c1649bea25b646afd1c4e0635ca52c3047833721ff6679993fa493bb362c0c54" from cache/src: (workdir /src)/src: (run (shell "sudo chown opam /src"))2024-06-19 16:23.40 ---> using "b762762a08f1e7d4744931fe1ea85f67842bcc4b969715ded633ebfb5b248ec7" from cache/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))(network host)(shell "cd ~/opam-repository && (git cat-file -e a6069b9eebba0e2b70cdbbd834bc800eb6d671fb || git fetch origin master) && git reset -q --hard a6069b9eebba0e2b70cdbbd834bc800eb6d671fb && git log --no-decorate -n1 --oneline && opam update -u"))From https://github.com/ocaml/opam-repository* branch master -> FETCH_HEADc61e9068d5..59c0c54934 master -> origin/mastera6069b9eeb [new release] dune (15 packages) (3.16.0)<><> Updating package repositories ><><><><><><><><><><><><><><><><><><><><><><>[default] synchronised from file:///home/opam/opam-repositoryThe following actions will be performed:- install host-arch-x86_64 1- install host-system-other 1- recompile ocaml-options-vanilla 1 [upstream or system changes]- recompile ocaml-base-compiler 5.2.0* [upstream or system changes]- recompile ocaml-config 3 [upstream or system changes]- recompile ocaml 5.2.0 [uses ocaml-base-compiler, ocaml-config]- recompile opam-depext 1.2.1-1 [uses ocaml]- recompile base-domains base [uses ocaml]- recompile base-nnp base [uses base-domains]===== 2 to install | 7 to recompile =====<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>-> retrieved ocaml-config.3 (cached)-> removed ocaml-options-vanilla.1-> installed host-arch-x86_64.1-> installed host-system-other.1-> installed ocaml-options-vanilla.1-> retrieved opam-depext.1.2.1-1 (cached)-> retrieved ocaml-base-compiler.5.2.0 (cached)-> removed base-nnp.base-> removed base-domains.base-> removed opam-depext.1.2.1-1-> removed ocaml.5.2.0-> removed ocaml-config.3-> removed ocaml-base-compiler.5.2.0-> installed ocaml-base-compiler.5.2.0-> installed ocaml-config.3-> installed ocaml.5.2.0-> installed base-domains.base-> installed base-nnp.base-> installed opam-depext.1.2.1-1Done.<><> opam-depext.1.2.1-1 installed successfully <><><><><><><><><><><><><><><><>=> opam-depext is unnecessary when used with opam >= 2.1. Please use opam install directly instead# Run eval $(opam env) to update the current shell environment2024-06-19 16:23.40 ---> using "39aa226067fcfe8fe7445859ae59d2a9576ef09268d545901bc8559cb79909b2" from cache/src: (copy (src iter.opam) (dst ./))2024-06-19 16:23.40 ---> saved as "167e894d0feaae73b17d5cc29e350e4479b1b68b0a782e21e441ee73cf12f2a5"/src: (run (network host)(shell "opam pin add -yn iter.dev './'"))[iter.dev] synchronised (file:///src)iter is now pinned to file:///src (version dev)2024-06-19 16:23.42 ---> saved as "48ab26e9727f5c53358d5628704b0c7b07f0a199f2f2af2cfb668b7f3b594d89"/src: (env DEPS "astring.0.8.5 base-bigarray.base base-domains.base base-nnp.base base-threads.base base-unix.base camlp-streams.5.0.1 cmdliner.1.3.0 cppo.1.6.9 csexp.1.5.2 dune.3.16.0 fmt.0.9.0 host-arch-x86_64.1 host-system-other.1 logs.0.7.0 mdx.2.4.1 ocaml.5.2.0 ocaml-base-compiler.5.2.0 ocaml-config.3 ocaml-options-vanilla.1 ocaml-version.3.6.7 ocamlbuild.0.14.3 ocamlfind.1.9.6 ounit2.2.2.7 qcheck-core.0.21.3 re.1.11.0 result.1.5 seq.base stdlib-shims.0.3.0 topkg.1.0.7")/src: (env CI true)/src: (env OCAMLCI true)/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))(network host)(shell "opam update --depexts && opam install --cli=2.1 --depext-only -y iter.dev $DEPS"))+ /usr/bin/sudo "apt-get" "update"- Hit:1 http://archive.ubuntu.com/ubuntu noble InRelease- Get:2 http://security.ubuntu.com/ubuntu noble-security InRelease [126 kB]- Get:3 http://archive.ubuntu.com/ubuntu noble-updates InRelease [126 kB]- Get:4 http://archive.ubuntu.com/ubuntu noble-backports InRelease [126 kB]- Get:5 http://security.ubuntu.com/ubuntu noble-security/main amd64 Packages [202 kB]- Get:6 http://archive.ubuntu.com/ubuntu noble-updates/universe amd64 Packages [92.4 kB]- Get:7 http://archive.ubuntu.com/ubuntu noble-updates/main amd64 Packages [226 kB]- Get:8 http://archive.ubuntu.com/ubuntu noble-updates/restricted amd64 Packages [139 kB]- Get:9 http://security.ubuntu.com/ubuntu noble-security/universe amd64 Packages [65.1 kB]- Get:10 http://security.ubuntu.com/ubuntu noble-security/restricted amd64 Packages [84.8 kB]- Get:11 http://archive.ubuntu.com/ubuntu noble-updates/multiverse amd64 Packages [15.5 kB]- Get:12 http://archive.ubuntu.com/ubuntu noble-backports/universe amd64 Packages [7519 B]- Fetched 1211 kB in 1s (1265 kB/s)- Reading package lists...-<><> Synchronising pinned packages ><><><><><><><><><><><><><><><><><><><><><><>[iter.dev] synchronised (no changes)[NOTE] Package ocaml-options-vanilla is already installed (current version is 1).[NOTE] Package ocaml-config is already installed (current version is 3).[NOTE] Package ocaml-base-compiler is already installed (current version is 5.2.0).[NOTE] Package ocaml is already installed (current version is 5.2.0).[NOTE] Package host-system-other is already installed (current version is 1).[NOTE] Package host-arch-x86_64 is already installed (current version is 1).[NOTE] Package base-unix is already installed (current version is base).[NOTE] Package base-threads is already installed (current version is base).[NOTE] Package base-nnp is already installed (current version is base).[NOTE] Package base-domains is already installed (current version is base).[NOTE] Package base-bigarray is already installed (current version is base).2024-06-19 16:24.08 ---> saved as "79b8edcb07a92241fa7993da1b38413e2ea787d47e01dc22de8c8947a9ee38cf"/src: (run (cache (opam-archives (target /home/opam/.opam/download-cache)))(network host)(shell "opam install $DEPS"))[NOTE] Package ocaml-options-vanilla is already installed (current version is 1).[NOTE] Package ocaml-config is already installed (current version is 3).[NOTE] Package ocaml-base-compiler is already installed (current version is 5.2.0).[NOTE] Package ocaml is already installed (current version is 5.2.0).[NOTE] Package host-system-other is already installed (current version is 1).[NOTE] Package host-arch-x86_64 is already installed (current version is 1).[NOTE] Package base-unix is already installed (current version is base).[NOTE] Package base-threads is already installed (current version is base).[NOTE] Package base-nnp is already installed (current version is base).[NOTE] Package base-domains is already installed (current version is base).[NOTE] Package base-bigarray is already installed (current version is base).The following actions will be performed:- install ocamlbuild 0.14.3- install dune 3.16.0- install ocamlfind 1.9.6- install cmdliner 1.3.0- install seq base- install stdlib-shims 0.3.0- install result 1.5- install qcheck-core 0.21.3- install ocaml-version 3.6.7- install csexp 1.5.2- install cppo 1.6.9- install camlp-streams 5.0.1- install topkg 1.0.7- install re 1.11.0- install ounit2 2.2.7- install fmt 0.9.0- install astring 0.8.5- install logs 0.7.0- install mdx 2.4.1===== 19 to install =====<><> Processing actions <><><><><><><><><><><><><><><><><><><><><><><><><><><><>-> retrieved astring.0.8.5 (cached)-> retrieved camlp-streams.5.0.1 (cached)-> retrieved cmdliner.1.3.0 (cached)-> retrieved cppo.1.6.9 (cached)-> retrieved csexp.1.5.2 (cached)-> retrieved dune.3.16.0 (cached)-> retrieved fmt.0.9.0 (cached)-> retrieved logs.0.7.0 (cached)-> retrieved mdx.2.4.1 (cached)-> retrieved ocaml-version.3.6.7 (cached)-> retrieved ocamlbuild.0.14.3 (cached)-> retrieved ocamlfind.1.9.6 (cached)-> retrieved ounit2.2.2.7 (cached)-> retrieved qcheck-core.0.21.3 (cached)-> retrieved seq.base (cached)-> installed seq.base-> retrieved re.1.11.0 (cached)-> retrieved result.1.5 (cached)-> retrieved stdlib-shims.0.3.0 (cached)-> retrieved topkg.1.0.7 (cached)-> installed cmdliner.1.3.0-> installed ocamlfind.1.9.6-> installed ocamlbuild.0.14.3-> installed topkg.1.0.7-> installed fmt.0.9.0-> installed astring.0.8.5-> installed logs.0.7.0-> installed dune.3.16.0-> installed csexp.1.5.2-> installed ocaml-version.3.6.7-> installed result.1.5-> installed stdlib-shims.0.3.0-> installed camlp-streams.5.0.1-> installed cppo.1.6.9-> installed re.1.11.0-> installed ounit2.2.2.7-> installed qcheck-core.0.21.3-> installed mdx.2.4.1Done.# Run eval $(opam env) to update the current shell environment2024-06-19 16:25.22 ---> saved as "6aa9249327ede4de46bbdde4cbef5d318e2bc9ffa4a196a94b87e60343cdeb34"/src: (copy (src .) (dst /src))2024-06-19 16:25.22 ---> saved as "71c3fa934e9f6220ca9d7ad7d1dd4be78b1a5d256fdd9e77e41d2a7303f1ac5c"/src: (run (shell "opam exec -- dune build @install @check @runtest && rm -rf _build"))File "benchs/dune", line 3, characters 17-26:3 | (libraries iter benchmark)^^^^^^^^^Error: Library "benchmark" not found.-> required by_build/default/benchs/.bench_persistent_read.eobjs/byte/dune__exe__Bench_persistent.cmi-> required by alias benchs/checkFile "README.md", line 1, characters 0-0:/usr/bin/git --no-pager diff --no-index --color=always -u _build/default/README.md _build/default/README.md.correcteddiff --git a/_build/default/README.md b/_build/default/README.md.correctedindex 4c8f158..e43f665 100644--- a/_build/default/README.md+++ b/_build/default/README.md.corrected@@ -5,9 +5,14 @@ Clean and efficient loop fusion for all your iterating needs!```ocaml# #require "iter";;+/src/_build/install/default/lib/iter: added to search path+/src/_build/install/default/lib/iter/iter.cma: loaded+Cannot find file /src/_build/install/default/lib/iter/iter.cma.+[125]# let p x = x mod 5 = 0 inIter.(1 -- 5_000 |> filter p |> map (fun x -> x * x) |> fold (+) 0);;-- : int = 8345837500+Line 2, characters 3-7:+Error: Unbound module Iter````Iter` is a simple abstraction over `iter` functions@@ -52,16 +57,20 @@ With iter, if the source structure provides a# let q : int Queue.t = Queue.create();;val q : int Queue.t = <abstr># Iter.( 1 -- 10 |> to_queue q);;-- : unit = ()+Line 1, characters 1-5:+Error: Unbound module Iter# Iter.of_queue q |> Iter.to_list ;;-- : int list = [1; 2; 3; 4; 5; 6; 7; 8; 9; 10]+Line 1, characters 20-32:+Error: Unbound module Iter# let s : int Stack.t = Stack.create();;val s : int Stack.t = <abstr># Iter.(of_queue q |> to_stack s);;-- : unit = ()+Line 1, characters 1-5:+Error: Unbound module Iter# Iter.of_stack s |> Iter.to_list ;;-- : int list = [10; 9; 8; 7; 6; 5; 4; 3; 2; 1]+Line 1, characters 20-32:+Error: Unbound module Iter```Note how the list of elements is reversed when we transfer them@@ -84,7 +93,8 @@ val h : (int, string) Hashtbl.t = <abstr># (* now to get the values *)Iter.of_hashtbl h |> Iter.map snd |> Iter.to_list;;-- : string list = ["6"; "2"; "8"; "7"; "3"; "5"; "4"; "9"; "0"; "10"; "1"]+Line 2, characters 40-52:+Error: Unbound module Iter```### Replacing `for` loops@@ -95,7 +105,8 @@ use `Iter.(--) : int -> int -> int Iter.t`.```ocaml# Iter.(1 -- 10_000_000 |> fold (+) 0);;-- : int = 50000005000000+Line 1, characters 1-5:+Error: Unbound module Iter# let p x = x mod 5 = 0 inIter.(1 -- 5_000@@ -103,7 +114,8 @@ use `Iter.(--) : int -> int -> int Iter.t`.|> map (fun x -> x * x)|> fold (+) 0);;-- : int = 8345837500+Line 2, characters 3-7:+Error: Unbound module Iter```**NOTE**: with _flambda_ under sufficiently strong@@ -131,20 +143,24 @@ type term = Var of string | App of term * term | Lambda of term| App (a,b) ->Iter.append (subterms a) (subterms b));;-val subterms : term -> term Iter.t = <fun>+Line 1, characters 33-39:+Error: Unbound module Iter# (* Now we can define many other functions easily! *)let vars t =Iter.filter_map(function Var s -> Some s | _ -> None)(subterms t) ;;-val vars : term -> string Iter.t = <fun>+Line 3, characters 5-20:+Error: Unbound module Iter# let size t = Iter.length (subterms t) ;;-val size : term -> int = <fun>+Line 1, characters 14-25:+Error: Unbound module Iter# let vars_list l = Iter.(of_list l |> flat_map vars);;-val vars_list : term list -> string Iter.t = <fun>+Line 1, characters 19-23:+Error: Unbound module Iter```### Permutations@@ -157,21 +173,26 @@ enumerating the ways we can insert an element in a list.```ocaml# open Iter.Infix;;+Line 1, characters 6-16:+Error: Unbound module Iter# let rec insert x l = match l with| [] -> Iter.return [x]| y :: tl ->Iter.append(insert x tl >|= fun tl' -> y :: tl')(Iter.return (x :: l)) ;;-val insert : 'a -> 'a list -> 'a list Iter.t = <fun>+Line 2, characters 11-22:+Error: Unbound module Iter# let rec permute l = match l with| [] -> Iter.return []| x :: tl -> permute tl >>= insert x ;;-val permute : 'a list -> 'a list Iter.t = <fun>+Line 2, characters 11-22:+Error: Unbound module Iter# permute [1;2;3;4] |> Iter.take 2 |> Iter.to_list ;;-- : int list list = [[4; 3; 2; 1]; [4; 3; 1; 2]]+Line 1, characters 37-49:+Error: Unbound module Iter```### Advanced example(cd _build/default && /home/opam/.opam/5.2/bin/ocamlc.opt -w @1..3@5..28@30..39@43@46..47@49..57@61..62-40 -strict-sequence -strict-formats -short-paths -keep-locs -w +a -warn-error -a+8 -strict-sequence -w +a -warn-error -a+8 -nolabels -g -bin-annot -bin-annot-occurrences -I src/.iter.objs/byte -intf-suffix .ml -no-alias-deps -opaque -o src/.iter.objs/byte/iter.cmo -c -impl src/Iter.ml)File "src/Iter.ml", lines 204-209, characters 6-33:204 | ......match !acc with205 | | Nil -> acc := !cur206 | | _ ->207 | (match !tail with208 | | Nil -> ()209 | | Cons r -> r.tl <- !cur)Warning 4 [fragile-match]: this pattern-matching is fragile.It will remain exhaustive when constructors are added to type node.File "src/Iter.ml", line 1043, characters 8-15:1043 | let of_list l = of_iter_ (of_list l)^^^^^^^Warning 32 [unused-value-declaration]: unused value of_list.File "src/Iter.ml", line 1044, characters 8-15:1044 | let to_list x = to_list (to_iter_ x)^^^^^^^Warning 32 [unused-value-declaration]: unused value to_list.(cd _build/default && /home/opam/.opam/5.2/bin/ocamlopt.opt -w @1..3@5..28@30..39@43@46..47@49..57@61..62-40 -strict-sequence -strict-formats -short-paths -keep-locs -w +a -warn-error -a+8 -strict-sequence -w +a -warn-error -a+8 -nolabels -g -O3 -unbox-closures -unbox-closures-factor 20 -I src/.iter.objs/byte -I src/.iter.objs/native -intf-suffix .ml -no-alias-deps -opaque -o src/.iter.objs/native/iter.cmx -c -impl src/Iter.ml)File "src/Iter.ml", lines 204-209, characters 6-33:204 | ......match !acc with205 | | Nil -> acc := !cur206 | | _ ->207 | (match !tail with208 | | Nil -> ()209 | | Cons r -> r.tl <- !cur)Warning 4 [fragile-match]: this pattern-matching is fragile.It will remain exhaustive when constructors are added to type node.File "src/Iter.ml", line 1043, characters 8-15:1043 | let of_list l = of_iter_ (of_list l)^^^^^^^Warning 32 [unused-value-declaration]: unused value of_list.File "src/Iter.ml", line 1044, characters 8-15:1044 | let to_list x = to_list (to_iter_ x)^^^^^^^Warning 32 [unused-value-declaration]: unused value to_list.(cd _build/default/tests/unit && ./t_iter.exe)random seed: 329430969================================================================================success (ran 4 tests)"/usr/bin/env" "bash" "-c" "opam exec -- dune build @install @check @runtest && rm -rf _build" failed with exit status 12024-06-19 16:25.23: Job failed: Failed: Build failed