[INFO] cloning repository https://github.com/amadare42/rust-exercises
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/amadare42/rust-exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famadare42%2Frust-exercises", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famadare42%2Frust-exercises'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fc79af74b2f965f1079d2cd1caf84f0004b45041
[INFO] testing amadare42/rust-exercises against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famadare42%2Frust-exercises" "/workspace/builds/worker-24/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-24/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/amadare42/rust-exercises on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/amadare42/rust-exercises
[INFO] finished tweaking git repo https://github.com/amadare42/rust-exercises
[INFO] tweaked toml for git repo https://github.com/amadare42/rust-exercises written to /workspace/builds/worker-24/source/Cargo.toml
[INFO] crate git repo https://github.com/amadare42/rust-exercises already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 93e804de1e9f5de79d0adc1d8e0cbd950f6aabf8ec6e039860655ccdddd0074c
[INFO] running `Command { std: "docker" "start" "-a" "93e804de1e9f5de79d0adc1d8e0cbd950f6aabf8ec6e039860655ccdddd0074c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93e804de1e9f5de79d0adc1d8e0cbd950f6aabf8ec6e039860655ccdddd0074c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93e804de1e9f5de79d0adc1d8e0cbd950f6aabf8ec6e039860655ccdddd0074c", kill_on_drop: false }`
[INFO] [stdout] 93e804de1e9f5de79d0adc1d8e0cbd950f6aabf8ec6e039860655ccdddd0074c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df0259ff20a2cc1badcf7e0f56a8edd687cf25e0e2b57b344139ecc13b17846f
[INFO] running `Command { std: "docker" "start" "-a" "df0259ff20a2cc1badcf7e0f56a8edd687cf25e0e2b57b344139ecc13b17846f", 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] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling smallvec v0.4.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling backtrace v0.3.43
[INFO] [stderr]    Compiling error-chain v0.10.0
[INFO] [stderr]    Compiling ferris-says v0.1.1
[INFO] [stderr]    Compiling foodbot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `avg`
[INFO] [stdout]   --> src/collections.rs:57:21
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct ListResult { avg: i32, median: i32, mode: i32 }
[INFO] [stdout]    |                     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `median`
[INFO] [stdout]   --> src/collections.rs:57:31
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct ListResult { avg: i32, median: i32, mode: i32 }
[INFO] [stdout]    |                               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `mode`
[INFO] [stdout]   --> src/collections.rs:57:44
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct ListResult { avg: i32, median: i32, mode: i32 }
[INFO] [stdout]    |                                            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.66s
[INFO] running `Command { std: "docker" "inspect" "df0259ff20a2cc1badcf7e0f56a8edd687cf25e0e2b57b344139ecc13b17846f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df0259ff20a2cc1badcf7e0f56a8edd687cf25e0e2b57b344139ecc13b17846f", kill_on_drop: false }`
[INFO] [stdout] df0259ff20a2cc1badcf7e0f56a8edd687cf25e0e2b57b344139ecc13b17846f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7addc8c586651acff11b68492d897c769bb6b76d12f88cecbd59e442d7d75947
[INFO] running `Command { std: "docker" "start" "-a" "7addc8c586651acff11b68492d897c769bb6b76d12f88cecbd59e442d7d75947", kill_on_drop: false }`
[INFO] [stderr]    Compiling foodbot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `avg`
[INFO] [stdout]   --> src/collections.rs:57:21
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct ListResult { avg: i32, median: i32, mode: i32 }
[INFO] [stdout]    |                     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `median`
[INFO] [stdout]   --> src/collections.rs:57:31
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct ListResult { avg: i32, median: i32, mode: i32 }
[INFO] [stdout]    |                               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `mode`
[INFO] [stdout]   --> src/collections.rs:57:44
[INFO] [stdout]    |
[INFO] [stdout] 57 | struct ListResult { avg: i32, median: i32, mode: i32 }
[INFO] [stdout]    |                                            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.37s
[INFO] running `Command { std: "docker" "inspect" "7addc8c586651acff11b68492d897c769bb6b76d12f88cecbd59e442d7d75947", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7addc8c586651acff11b68492d897c769bb6b76d12f88cecbd59e442d7d75947", kill_on_drop: false }`
[INFO] [stdout] 7addc8c586651acff11b68492d897c769bb6b76d12f88cecbd59e442d7d75947
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f3ded24e7866c40ac0601d4ecd6be209b09da3f3b3fda8c4ef6f62f3f8d21fdf
[INFO] running `Command { std: "docker" "start" "-a" "f3ded24e7866c40ac0601d4ecd6be209b09da3f3b3fda8c4ef6f62f3f8d21fdf", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: field is never read: `avg`
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/collections.rs:57:21
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 57 | struct ListResult { avg: i32, median: i32, mode: i32 }
[INFO] [stdout] 
[INFO] [stderr]    |                     ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `median`
[INFO] [stderr]   --> src/collections.rs:57:31
[INFO] [stderr]    |
[INFO] [stderr] 57 | struct ListResult { avg: i32, median: i32, mode: i32 }
[INFO] [stderr]    |                               ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `mode`
[INFO] [stderr]   --> src/collections.rs:57:44
[INFO] [stderr]    |
[INFO] [stderr] 57 | struct ListResult { avg: i32, median: i32, mode: i32 }
[INFO] [stderr]    |                                            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `foodbot` (bin "foodbot" test) generated 3 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/foodbot-5fd295f17effe876)
[INFO] running `Command { std: "docker" "inspect" "f3ded24e7866c40ac0601d4ecd6be209b09da3f3b3fda8c4ef6f62f3f8d21fdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3ded24e7866c40ac0601d4ecd6be209b09da3f3b3fda8c4ef6f62f3f8d21fdf", kill_on_drop: false }`
[INFO] [stdout] f3ded24e7866c40ac0601d4ecd6be209b09da3f3b3fda8c4ef6f62f3f8d21fdf