[INFO] cloning repository https://github.com/otaviopace/linked-lists
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/otaviopace/linked-lists" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fotaviopace%2Flinked-lists", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fotaviopace%2Flinked-lists'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 97f9a022bd74c0592584a8f4a717d494f762c794
[INFO] testing otaviopace/linked-lists against beta-2021-09-08 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fotaviopace%2Flinked-lists" "/workspace/builds/worker-100/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-100/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/otaviopace/linked-lists on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/otaviopace/linked-lists
[INFO] finished tweaking git repo https://github.com/otaviopace/linked-lists
[INFO] tweaked toml for git repo https://github.com/otaviopace/linked-lists written to /workspace/builds/worker-100/source/Cargo.toml
[INFO] crate git repo https://github.com/otaviopace/linked-lists already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8cd88be12ecbf3487c2cdfa7feb36df4319a717fbf84f4e10bc37e367ca27e64
[INFO] running `Command { std: "docker" "start" "-a" "8cd88be12ecbf3487c2cdfa7feb36df4319a717fbf84f4e10bc37e367ca27e64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8cd88be12ecbf3487c2cdfa7feb36df4319a717fbf84f4e10bc37e367ca27e64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cd88be12ecbf3487c2cdfa7feb36df4319a717fbf84f4e10bc37e367ca27e64", kill_on_drop: false }`
[INFO] [stdout] 8cd88be12ecbf3487c2cdfa7feb36df4319a717fbf84f4e10bc37e367ca27e64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dbf9113c05b6bc40d15fe4a647f82b006a864437c9286d6e7ac06dc81c3f3647
[INFO] running `Command { std: "docker" "start" "-a" "dbf9113c05b6bc40d15fe4a647f82b006a864437c9286d6e7ac06dc81c3f3647", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling linked-lists v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `iter`
[INFO] [stdout]   --> src/third.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn iter<'a>(&'a self) -> Iter<'a, T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.36s
[INFO] running `Command { std: "docker" "inspect" "dbf9113c05b6bc40d15fe4a647f82b006a864437c9286d6e7ac06dc81c3f3647", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbf9113c05b6bc40d15fe4a647f82b006a864437c9286d6e7ac06dc81c3f3647", kill_on_drop: false }`
[INFO] [stdout] dbf9113c05b6bc40d15fe4a647f82b006a864437c9286d6e7ac06dc81c3f3647
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 394ae99c18409d5c9f97f24dbab0d47c3abff3e6c0eac8adca773136c9548ef6
[INFO] running `Command { std: "docker" "start" "-a" "394ae99c18409d5c9f97f24dbab0d47c3abff3e6c0eac8adca773136c9548ef6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: associated function is never used: `iter`
[INFO] [stdout]   --> src/third.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 |     fn iter<'a>(&'a self) -> Iter<'a, T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling linked-lists v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.91s
[INFO] running `Command { std: "docker" "inspect" "394ae99c18409d5c9f97f24dbab0d47c3abff3e6c0eac8adca773136c9548ef6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "394ae99c18409d5c9f97f24dbab0d47c3abff3e6c0eac8adca773136c9548ef6", kill_on_drop: false }`
[INFO] [stdout] 394ae99c18409d5c9f97f24dbab0d47c3abff3e6c0eac8adca773136c9548ef6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8cb2e54da0a2a6c7382009a235fd0ff1ced4f29e40df01389ef026f6cd12e4c1
[INFO] running `Command { std: "docker" "start" "-a" "8cb2e54da0a2a6c7382009a235fd0ff1ced4f29e40df01389ef026f6cd12e4c1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: associated function is never used: `iter`
[INFO] [stderr]   --> src/third.rs:44:8
[INFO] [stderr]    |
[INFO] [stderr] 44 |     fn iter<'a>(&'a self) -> Iter<'a, T> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `linked-lists` (lib) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.99s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/linked_lists-a834af2db82e89f3)
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test fifth::test::into_iter ... ok
[INFO] [stdout] test fifth::test::basics ... ok
[INFO] [stdout] test fifth::test::iter ... ok
[INFO] [stdout] test fifth::test::iter_mut ... ok
[INFO] [stdout] test first::test::basics ... ok
[INFO] [stdout] test fourth::test::basics ... ok
[INFO] [stdout] test fourth::test::into_iter ... ok
[INFO] [stdout] test second::test::basics ... ok
[INFO] [stdout] test fourth::test::peek ... ok
[INFO] [stdout] test second::test::into_iter ... ok
[INFO] [stdout] test second::test::iter ... ok
[INFO] [stdout] test second::test::iter_mut ... ok
[INFO] [stdout] test second::test::peek ... ok
[INFO] [stdout] test silly1::test::walk_aboot ... ok
[INFO] [stdout] test third::test::basics ... ok
[INFO] [stdout] test third::test::iter ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests linked-lists
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8cb2e54da0a2a6c7382009a235fd0ff1ced4f29e40df01389ef026f6cd12e4c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8cb2e54da0a2a6c7382009a235fd0ff1ced4f29e40df01389ef026f6cd12e4c1", kill_on_drop: false }`
[INFO] [stdout] 8cb2e54da0a2a6c7382009a235fd0ff1ced4f29e40df01389ef026f6cd12e4c1