[INFO] cloning repository https://github.com/nicbk/linkedhashmap
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nicbk/linkedhashmap" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnicbk%2Flinkedhashmap", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnicbk%2Flinkedhashmap'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8a359943d35963d97126776d80760ffaf65fa021
[INFO] testing nicbk/linkedhashmap against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnicbk%2Flinkedhashmap" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nicbk/linkedhashmap on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nicbk/linkedhashmap
[INFO] finished tweaking git repo https://github.com/nicbk/linkedhashmap
[INFO] tweaked toml for git repo https://github.com/nicbk/linkedhashmap written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/nicbk/linkedhashmap already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f31219998cfb70b03a86d444a13232fc67596146b3953ae76ad9f736610f739f
[INFO] running `Command { std: "docker" "start" "-a" "f31219998cfb70b03a86d444a13232fc67596146b3953ae76ad9f736610f739f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f31219998cfb70b03a86d444a13232fc67596146b3953ae76ad9f736610f739f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f31219998cfb70b03a86d444a13232fc67596146b3953ae76ad9f736610f739f", kill_on_drop: false }`
[INFO] [stdout] f31219998cfb70b03a86d444a13232fc67596146b3953ae76ad9f736610f739f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3e75465cf18a98b50fa4cc4f91a0349cd63e749cc8d2ba8b19c04692e2a1f72
[INFO] running `Command { std: "docker" "start" "-a" "d3e75465cf18a98b50fa4cc4f91a0349cd63e749cc8d2ba8b19c04692e2a1f72", kill_on_drop: false }`
[INFO] [stderr]    Compiling linkedhashmap v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `end_of_chain` is never read
[INFO] [stdout]   --> src/main.rs:96:17
[INFO] [stdout]    |
[INFO] [stdout] 96 |         let mut end_of_chain = None;
[INFO] [stdout]    |                 ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "d3e75465cf18a98b50fa4cc4f91a0349cd63e749cc8d2ba8b19c04692e2a1f72", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3e75465cf18a98b50fa4cc4f91a0349cd63e749cc8d2ba8b19c04692e2a1f72", kill_on_drop: false }`
[INFO] [stdout] d3e75465cf18a98b50fa4cc4f91a0349cd63e749cc8d2ba8b19c04692e2a1f72
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e5409518a771ff3b1a9c27ee600042658834f76795bfad50ed1efa7aad7f132
[INFO] running `Command { std: "docker" "start" "-a" "1e5409518a771ff3b1a9c27ee600042658834f76795bfad50ed1efa7aad7f132", kill_on_drop: false }`
[INFO] [stderr]    Compiling linkedhashmap v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `end_of_chain` is never read
[INFO] [stdout]   --> src/main.rs:96:17
[INFO] [stdout]    |
[INFO] [stdout] 96 |         let mut end_of_chain = None;
[INFO] [stdout]    |                 ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "1e5409518a771ff3b1a9c27ee600042658834f76795bfad50ed1efa7aad7f132", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e5409518a771ff3b1a9c27ee600042658834f76795bfad50ed1efa7aad7f132", kill_on_drop: false }`
[INFO] [stdout] 1e5409518a771ff3b1a9c27ee600042658834f76795bfad50ed1efa7aad7f132
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 85ea8eb305496848e82d1e74700a21fa67a91f79eb9db413f144e21eda134250
[INFO] running `Command { std: "docker" "start" "-a" "85ea8eb305496848e82d1e74700a21fa67a91f79eb9db413f144e21eda134250", kill_on_drop: false }`
[INFO] [stderr] warning: value assigned to `end_of_chain` is never read
[INFO] [stderr]   --> src/main.rs:96:17
[INFO] [stderr]    |
[INFO] [stderr] 96 |         let mut end_of_chain = None;
[INFO] [stderr]    |                 ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: `linkedhashmap` (bin "linkedhashmap" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/linkedhashmap-91fe3be458d3a254)
[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" "85ea8eb305496848e82d1e74700a21fa67a91f79eb9db413f144e21eda134250", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85ea8eb305496848e82d1e74700a21fa67a91f79eb9db413f144e21eda134250", kill_on_drop: false }`
[INFO] [stdout] 85ea8eb305496848e82d1e74700a21fa67a91f79eb9db413f144e21eda134250