[INFO] cloning repository https://github.com/DaVinci789/rust_config_file
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DaVinci789/rust_config_file" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDaVinci789%2Frust_config_file", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDaVinci789%2Frust_config_file'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ede34427dd04903c2da696edacc69a9fb56a12ab
[INFO] testing DaVinci789/rust_config_file against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDaVinci789%2Frust_config_file" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DaVinci789/rust_config_file 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/DaVinci789/rust_config_file
[INFO] finished tweaking git repo https://github.com/DaVinci789/rust_config_file
[INFO] tweaked toml for git repo https://github.com/DaVinci789/rust_config_file written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/DaVinci789/rust_config_file 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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 8248396e57c77c6bb4d7d2744f251cd12dabc6c8f72a494f0c50333630315fc7
[INFO] running `Command { std: "docker" "start" "-a" "8248396e57c77c6bb4d7d2744f251cd12dabc6c8f72a494f0c50333630315fc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8248396e57c77c6bb4d7d2744f251cd12dabc6c8f72a494f0c50333630315fc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8248396e57c77c6bb4d7d2744f251cd12dabc6c8f72a494f0c50333630315fc7", kill_on_drop: false }`
[INFO] [stdout] 8248396e57c77c6bb4d7d2744f251cd12dabc6c8f72a494f0c50333630315fc7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] e840c8e27c3465d309186d2ecfa2145db7c5630bb0fe33e4763e7b881ac5c99a
[INFO] running `Command { std: "docker" "start" "-a" "e840c8e27c3465d309186d2ecfa2145db7c5630bb0fe33e4763e7b881ac5c99a", kill_on_drop: false }`
[INFO] [stderr]    Compiling json v0.12.4
[INFO] [stderr]    Compiling config-file v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:421:9
[INFO] [stdout]     |
[INFO] [stdout] 421 |     let mut token_as_str: &str = &(token.replace(",", "").clone())[..];
[INFO] [stdout]     |         ----^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` 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 2.97s
[INFO] running `Command { std: "docker" "inspect" "e840c8e27c3465d309186d2ecfa2145db7c5630bb0fe33e4763e7b881ac5c99a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e840c8e27c3465d309186d2ecfa2145db7c5630bb0fe33e4763e7b881ac5c99a", kill_on_drop: false }`
[INFO] [stdout] e840c8e27c3465d309186d2ecfa2145db7c5630bb0fe33e4763e7b881ac5c99a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] a6b97b1ddc5a54dfd190c0aba1257e4d16f228fd7f7aae0d942d632b01b2ff80
[INFO] running `Command { std: "docker" "start" "-a" "a6b97b1ddc5a54dfd190c0aba1257e4d16f228fd7f7aae0d942d632b01b2ff80", kill_on_drop: false }`
[INFO] [stderr]    Compiling config-file v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:421:9
[INFO] [stdout]     |
[INFO] [stdout] 421 |     let mut token_as_str: &str = &(token.replace(",", "").clone())[..];
[INFO] [stdout]     |         ----^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `Command { std: "docker" "inspect" "a6b97b1ddc5a54dfd190c0aba1257e4d16f228fd7f7aae0d942d632b01b2ff80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6b97b1ddc5a54dfd190c0aba1257e4d16f228fd7f7aae0d942d632b01b2ff80", kill_on_drop: false }`
[INFO] [stdout] a6b97b1ddc5a54dfd190c0aba1257e4d16f228fd7f7aae0d942d632b01b2ff80
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 6b763c1e9e5fc320d3d3ce1653979cffe8ebff3c5e5bfad40a19a3d6c22418bf
[INFO] running `Command { std: "docker" "start" "-a" "6b763c1e9e5fc320d3d3ce1653979cffe8ebff3c5e5bfad40a19a3d6c22418bf", kill_on_drop: false }`
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:421:9
[INFO] [stderr]     |
[INFO] [stderr] 421 |     let mut token_as_str: &str = &(token.replace(",", "").clone())[..];
[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] warning: `config-file` (bin "config-file" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/config_file-2ef5713fbfc4d45d)
[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" "6b763c1e9e5fc320d3d3ce1653979cffe8ebff3c5e5bfad40a19a3d6c22418bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b763c1e9e5fc320d3d3ce1653979cffe8ebff3c5e5bfad40a19a3d6c22418bf", kill_on_drop: false }`
[INFO] [stdout] 6b763c1e9e5fc320d3d3ce1653979cffe8ebff3c5e5bfad40a19a3d6c22418bf