[INFO] cloning repository https://github.com/songever/too-many-lists
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/songever/too-many-lists" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsongever%2Ftoo-many-lists", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsongever%2Ftoo-many-lists'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 527a9e86ab80c2ceabc82bae731094bd0a8b1244
[INFO] testing songever/too-many-lists against master#0d162b25edd5bf0dba9a22e83b614f1113e90474 for pr-150681
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsongever%2Ftoo-many-lists" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/songever/too-many-lists
[INFO] finished tweaking git repo https://github.com/songever/too-many-lists
[INFO] tweaked toml for git repo https://github.com/songever/too-many-lists written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/songever/too-many-lists on toolchain 0d162b25edd5bf0dba9a22e83b614f1113e90474
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/songever/too-many-lists already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df29260d23a15281738dd71f6aa3592c674eb2cea4bc7cf6d1a70d59deb76fdb
[INFO] running `Command { std: "docker" "start" "-a" "df29260d23a15281738dd71f6aa3592c674eb2cea4bc7cf6d1a70d59deb76fdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df29260d23a15281738dd71f6aa3592c674eb2cea4bc7cf6d1a70d59deb76fdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df29260d23a15281738dd71f6aa3592c674eb2cea4bc7cf6d1a70d59deb76fdb", kill_on_drop: false }`
[INFO] [stdout] df29260d23a15281738dd71f6aa3592c674eb2cea4bc7cf6d1a70d59deb76fdb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6411195adbd38f30a822c36f23b447deb2e9df7948cbfb3a25cab5f8cf69231f
[INFO] running `Command { std: "docker" "start" "-a" "6411195adbd38f30a822c36f23b447deb2e9df7948cbfb3a25cab5f8cf69231f", kill_on_drop: false }`
[INFO] [stderr]    Compiling too-many-lists v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/fifth.rs:54:17
[INFO] [stdout]    |
[INFO] [stdout] 54 |             let mut new_tail = Box::into_raw(Box::new(Node {
[INFO] [stdout]    |                 ----^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iter_mut_invariant` is never used
[INFO] [stdout]    --> src/sixth.rs:602:4
[INFO] [stdout]     |
[INFO] [stdout] 602 | fn iter_mut_invariant() {}
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "6411195adbd38f30a822c36f23b447deb2e9df7948cbfb3a25cab5f8cf69231f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6411195adbd38f30a822c36f23b447deb2e9df7948cbfb3a25cab5f8cf69231f", kill_on_drop: false }`
[INFO] [stdout] 6411195adbd38f30a822c36f23b447deb2e9df7948cbfb3a25cab5f8cf69231f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d759be6814e7602d21820f01eade97212a5e80022790f6cc4219efe28d4d5067
[INFO] running `Command { std: "docker" "start" "-a" "d759be6814e7602d21820f01eade97212a5e80022790f6cc4219efe28d4d5067", kill_on_drop: false }`
[INFO] [stderr]    Compiling too-many-lists v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/fifth.rs:54:17
[INFO] [stdout]    |
[INFO] [stdout] 54 |             let mut new_tail = Box::into_raw(Box::new(Node {
[INFO] [stdout]    |                 ----^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iter_mut_invariant` is never used
[INFO] [stdout]    --> src/sixth.rs:602:4
[INFO] [stdout]     |
[INFO] [stdout] 602 | fn iter_mut_invariant() {}
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::fourth::test`
[INFO] [stdout]    --> src/fourth.rs:142:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |     use crate::fourth::test;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/fifth.rs:54:17
[INFO] [stdout]    |
[INFO] [stdout] 54 |             let mut new_tail = Box::into_raw(Box::new(Node {
[INFO] [stdout]    |                 ----^^^^^^^^
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/sixth.rs:708:13
[INFO] [stdout]     |
[INFO] [stdout] 708 |         let mut m = generate_test();
[INFO] [stdout]     |             ----^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `iter_mut_invariant` is never used
[INFO] [stdout]    --> src/sixth.rs:602:4
[INFO] [stdout]     |
[INFO] [stdout] 602 | fn iter_mut_invariant() {}
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.14s
[INFO] running `Command { std: "docker" "inspect" "d759be6814e7602d21820f01eade97212a5e80022790f6cc4219efe28d4d5067", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d759be6814e7602d21820f01eade97212a5e80022790f6cc4219efe28d4d5067", kill_on_drop: false }`
[INFO] [stdout] d759be6814e7602d21820f01eade97212a5e80022790f6cc4219efe28d4d5067
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:845e597a41426bbf2703be69acdb67d10b6de511142d05cba7bbe119c898b2c7" "/opt/rustwide/cargo-home/bin/cargo" "+0d162b25edd5bf0dba9a22e83b614f1113e90474" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8c5cb0b961749917b4fb8f415972407cdd5ba45e36fd078ca18587bce0962e08
[INFO] running `Command { std: "docker" "start" "-a" "8c5cb0b961749917b4fb8f415972407cdd5ba45e36fd078ca18587bce0962e08", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/fifth.rs:54:17
[INFO] [stderr]    |
[INFO] [stderr] 54 |             let mut new_tail = Box::into_raw(Box::new(Node {
[INFO] [stderr]    |                 ----^^^^^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `iter_mut_invariant` is never used
[INFO] [stderr]    --> src/sixth.rs:602:4
[INFO] [stderr]     |
[INFO] [stderr] 602 | fn iter_mut_invariant() {}
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `too-many-lists` (lib) generated 2 warnings (run `cargo fix --lib -p too-many-lists` to apply 1 suggestion)
[INFO] [stderr] warning: unused import: `crate::fourth::test`
[INFO] [stderr]    --> src/fourth.rs:142:9
[INFO] [stderr]     |
[INFO] [stderr] 142 |     use crate::fourth::test;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/sixth.rs:708:13
[INFO] [stderr]     |
[INFO] [stderr] 708 |         let mut m = generate_test();
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: `too-many-lists` (lib test) generated 4 warnings (2 duplicates) (run `cargo fix --lib -p too-many-lists --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/too_many_lists-ccd891af7ba92b66)
[INFO] [stdout] 
[INFO] [stdout] running 32 tests
[INFO] [stdout] test fifth::test::iter ... ok
[INFO] [stdout] test second::test::basics ... ok
[INFO] [stdout] test fourth::test::peek ... ok
[INFO] [stdout] test fourth::test::into_iter ... ok
[INFO] [stdout] test fourth::test::basics ... ok
[INFO] [stdout] test fifth::test::into_iter ... ok
[INFO] [stdout] test first::test::long_list ... ok
[INFO] [stdout] test fifth::test::miri_food ... ok
[INFO] [stdout] test fifth::test::basics ... ok
[INFO] [stdout] test second::test::iter ... ok
[INFO] [stdout] test second::test::iter_mut ... ok
[INFO] [stdout] test fifth::test::iter_mut ... ok
[INFO] [stdout] test first::test::basics ... ok
[INFO] [stdout] test second::test::into_iter ... ok
[INFO] [stdout] test second::test::peek ... ok
[INFO] [stdout] test sixth::test::test_cursor_mut_insert ... ok
[INFO] [stdout] test sixth::test::test_basic_front ... ok
[INFO] [stdout] test sixth::test::test_debug ... ok
[INFO] [stdout] test sixth::test::test_hashmap ... ok
[INFO] [stdout] test sixth::test::test_ord ... ok
[INFO] [stdout] test sixth::test::test_ord_nan ... ok
[INFO] [stdout] test sixth::test::test_iterator ... ok
[INFO] [stdout] test third::test::iter ... ok
[INFO] [stdout] test sixth::test::test_cursor_move_peek ... ok
[INFO] [stdout] test sixth::test::test_iterator_mut_double_end ... ok
[INFO] [stdout] test sixth::test::test_iterator_double_end ... ok
[INFO] [stdout] test third::test::basics ... ok
[INFO] [stdout] test sixth::test::test_rev_iter ... ok
[INFO] [stdout] test sixth::test::test_eq ... ok
[INFO] [stdout] test sixth::test::test_mut_iter ... ok
[INFO] [stdout] test second::test::long_list ... ok
[INFO] [stdout] test third::test::drop_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 32 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.48s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests too_many_lists
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/sixth.rs - sixth::iter_mut_invariant (line 597) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/sixth.rs - sixth::iter_mut_invariant (line 597) stdout ----
[INFO] [stdout] error[E0432]: unresolved import `linked_list`
[INFO] [stdout]    --> src/sixth.rs:598:5
[INFO] [stdout]     |
[INFO] [stdout] 598 | use linked_list::IterMut;
[INFO] [stdout]     |     ^^^^^^^^^^^ use of unresolved module or unlinked crate `linked_list`
[INFO] [stdout]     |
[INFO] [stdout]     = help: if you wanted to use a crate named `linked_list`, use `cargo add linked_list` to add it to your `Cargo.toml`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/sixth.rs - sixth::iter_mut_invariant (line 597)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.10s
[INFO] [stdout] 
[INFO] [stdout] all doctests ran in 0.15s; merged doctests compilation took 0.04s
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "8c5cb0b961749917b4fb8f415972407cdd5ba45e36fd078ca18587bce0962e08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c5cb0b961749917b4fb8f415972407cdd5ba45e36fd078ca18587bce0962e08", kill_on_drop: false }`
[INFO] [stdout] 8c5cb0b961749917b4fb8f415972407cdd5ba45e36fd078ca18587bce0962e08
