[INFO] crate c_linked_list 1.1.1 is already in cache
[INFO] testing c_linked_list-1.1.1 against 1.38.0 for beta-1.39-1
[INFO] extracting crate c_linked_list 1.1.1 into work/builds/worker-6/source
[INFO] validating manifest of crates.io crate c_linked_list 1.1.1 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate c_linked_list 1.1.1
[INFO] finished tweaking crates.io crate c_linked_list 1.1.1
[INFO] tweaked toml for crates.io crate c_linked_list 1.1.1 written to work/builds/worker-6/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 238a48433de349494798b4be5a07f13304b6f4db5b3f100ba0d42dda8a10d266
[INFO] running `"docker" "start" "-a" "238a48433de349494798b4be5a07f13304b6f4db5b3f100ba0d42dda8a10d266"`
[INFO] [stderr]    Compiling c_linked_list v1.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:138:18
[INFO] [stderr]     |
[INFO] [stderr] 138 |     fn into_iter(mut self) -> CLinkedListMutIterMut<'a, T, N> {
[INFO] [stderr]     |                  ----^^^^
[INFO] [stderr]     |                  |
[INFO] [stderr]     |                  help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `"docker" "inspect" "238a48433de349494798b4be5a07f13304b6f4db5b3f100ba0d42dda8a10d266"`
[INFO] running `"docker" "rm" "-f" "238a48433de349494798b4be5a07f13304b6f4db5b3f100ba0d42dda8a10d266"`
[INFO] [stdout] 238a48433de349494798b4be5a07f13304b6f4db5b3f100ba0d42dda8a10d266
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 2d7250cdcd885b69ee65ef2930abbd1f03015bea0d60c51af097aeddf97c31fc
[INFO] running `"docker" "start" "-a" "2d7250cdcd885b69ee65ef2930abbd1f03015bea0d60c51af097aeddf97c31fc"`
[INFO] [stderr]    Compiling c_linked_list v1.1.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:138:18
[INFO] [stderr]     |
[INFO] [stderr] 138 |     fn into_iter(mut self) -> CLinkedListMutIterMut<'a, T, N> {
[INFO] [stderr]     |                  ----^^^^
[INFO] [stderr]     |                  |
[INFO] [stderr]     |                  help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `"docker" "inspect" "2d7250cdcd885b69ee65ef2930abbd1f03015bea0d60c51af097aeddf97c31fc"`
[INFO] running `"docker" "rm" "-f" "2d7250cdcd885b69ee65ef2930abbd1f03015bea0d60c51af097aeddf97c31fc"`
[INFO] [stdout] 2d7250cdcd885b69ee65ef2930abbd1f03015bea0d60c51af097aeddf97c31fc
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] a0f3bedabc05797b75b607a1bcd2007488b5328ddc8b5600783665d59d81555c
[INFO] running `"docker" "start" "-a" "a0f3bedabc05797b75b607a1bcd2007488b5328ddc8b5600783665d59d81555c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/c_linked_list-d66f29f526a65ef3
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::test_const ... ok
[INFO] [stdout] test tests::test_mut ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests c_linked_list
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs -  (line 15) ... ignored
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "a0f3bedabc05797b75b607a1bcd2007488b5328ddc8b5600783665d59d81555c"`
[INFO] running `"docker" "rm" "-f" "a0f3bedabc05797b75b607a1bcd2007488b5328ddc8b5600783665d59d81555c"`
[INFO] [stdout] a0f3bedabc05797b75b607a1bcd2007488b5328ddc8b5600783665d59d81555c