[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 master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Famadare42%2Frust-exercises" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/amadare42/rust-exercises on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-7/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9051d174ac9c499c020e8c6ee4e1606d2ebb3085b751132918a3c9561812939a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "9051d174ac9c499c020e8c6ee4e1606d2ebb3085b751132918a3c9561812939a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9051d174ac9c499c020e8c6ee4e1606d2ebb3085b751132918a3c9561812939a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9051d174ac9c499c020e8c6ee4e1606d2ebb3085b751132918a3c9561812939a", kill_on_drop: false }`
[INFO] [stdout] 9051d174ac9c499c020e8c6ee4e1606d2ebb3085b751132918a3c9561812939a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fc3e78aa650e4375b7cc6ee6b6860a87d80030dfe0af847557c363194d3fe0be
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fc3e78aa650e4375b7cc6ee6b6860a87d80030dfe0af847557c363194d3fe0be", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling smallvec v0.4.5
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling atty v0.2.14
[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 19.25s
[INFO] running `Command { std: "docker" "inspect" "fc3e78aa650e4375b7cc6ee6b6860a87d80030dfe0af847557c363194d3fe0be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc3e78aa650e4375b7cc6ee6b6860a87d80030dfe0af847557c363194d3fe0be", kill_on_drop: false }`
[INFO] [stdout] fc3e78aa650e4375b7cc6ee6b6860a87d80030dfe0af847557c363194d3fe0be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bbe83d1cb9e486bc4cae501a1a03ca375300b0043cc35291cf063aa6eb5c1984
[INFO] running `Command { std: "docker" "start" "-a" "bbe83d1cb9e486bc4cae501a1a03ca375300b0043cc35291cf063aa6eb5c1984", 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 0.72s
[INFO] running `Command { std: "docker" "inspect" "bbe83d1cb9e486bc4cae501a1a03ca375300b0043cc35291cf063aa6eb5c1984", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbe83d1cb9e486bc4cae501a1a03ca375300b0043cc35291cf063aa6eb5c1984", kill_on_drop: false }`
[INFO] [stdout] bbe83d1cb9e486bc4cae501a1a03ca375300b0043cc35291cf063aa6eb5c1984
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=forbid" "-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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1fb9c7d3add2e41652417bbe4ad920eb6a0bab707a894422decfc8513e8a3cf2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1fb9c7d3add2e41652417bbe4ad920eb6a0bab707a894422decfc8513e8a3cf2", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `avg`
[INFO] [stderr]   --> src/collections.rs:57:21
[INFO] [stderr]    |
[INFO] [stderr] 57 | struct ListResult { avg: i32, median: i32, mode: i32 }
[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 0.04s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/foodbot-e5b17841b9090661)
[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" "1fb9c7d3add2e41652417bbe4ad920eb6a0bab707a894422decfc8513e8a3cf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fb9c7d3add2e41652417bbe4ad920eb6a0bab707a894422decfc8513e8a3cf2", kill_on_drop: false }`
[INFO] [stdout] 1fb9c7d3add2e41652417bbe4ad920eb6a0bab707a894422decfc8513e8a3cf2