[INFO] cloning repository https://github.com/kooparse/coding_problems
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kooparse/coding_problems" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkooparse%2Fcoding_problems", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkooparse%2Fcoding_problems'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 19401df9cd92fec15231b368cd08e7473595ffd0
[INFO] testing kooparse/coding_problems 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%2Fkooparse%2Fcoding_problems" "/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/kooparse/coding_problems 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/kooparse/coding_problems
[INFO] finished tweaking git repo https://github.com/kooparse/coding_problems
[INFO] tweaked toml for git repo https://github.com/kooparse/coding_problems written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/kooparse/coding_problems 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-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ad31e7554e6a2815c7080806d72672755743c1a9eb39810485ef10c3610ca7d
[INFO] running `Command { std: "docker" "start" "-a" "0ad31e7554e6a2815c7080806d72672755743c1a9eb39810485ef10c3610ca7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ad31e7554e6a2815c7080806d72672755743c1a9eb39810485ef10c3610ca7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ad31e7554e6a2815c7080806d72672755743c1a9eb39810485ef10c3610ca7d", kill_on_drop: false }`
[INFO] [stdout] 0ad31e7554e6a2815c7080806d72672755743c1a9eb39810485ef10c3610ca7d
[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=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] 0b69cbd4216d875eecaca77538a1faaf7fe6636de48bcbd09b201e8497acc9f5
[INFO] running `Command { std: "docker" "start" "-a" "0b69cbd4216d875eecaca77538a1faaf7fe6636de48bcbd09b201e8497acc9f5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling coding_interview v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.29s
[INFO] running `Command { std: "docker" "inspect" "0b69cbd4216d875eecaca77538a1faaf7fe6636de48bcbd09b201e8497acc9f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b69cbd4216d875eecaca77538a1faaf7fe6636de48bcbd09b201e8497acc9f5", kill_on_drop: false }`
[INFO] [stdout] 0b69cbd4216d875eecaca77538a1faaf7fe6636de48bcbd09b201e8497acc9f5
[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=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] 82899279d3ea4c6830e1cbc67d2148a8d3b1187b04daddc3470abb376c10645f
[INFO] running `Command { std: "docker" "start" "-a" "82899279d3ea4c6830e1cbc67d2148a8d3b1187b04daddc3470abb376c10645f", kill_on_drop: false }`
[INFO] [stderr]    Compiling coding_interview v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "82899279d3ea4c6830e1cbc67d2148a8d3b1187b04daddc3470abb376c10645f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82899279d3ea4c6830e1cbc67d2148a8d3b1187b04daddc3470abb376c10645f", kill_on_drop: false }`
[INFO] [stdout] 82899279d3ea4c6830e1cbc67d2148a8d3b1187b04daddc3470abb376c10645f
[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=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] e8146316c74a8cae78895d3cecb980349cc9c2ac7d5fd3144c9196c980778bf4
[INFO] running `Command { std: "docker" "start" "-a" "e8146316c74a8cae78895d3cecb980349cc9c2ac7d5fd3144c9196c980778bf4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.20s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/coding_interview-6df5c5030caa9396)
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests coding_interview
[INFO] [stdout] test google_serializer::tests::serializer ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[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" "e8146316c74a8cae78895d3cecb980349cc9c2ac7d5fd3144c9196c980778bf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8146316c74a8cae78895d3cecb980349cc9c2ac7d5fd3144c9196c980778bf4", kill_on_drop: false }`
[INFO] [stdout] e8146316c74a8cae78895d3cecb980349cc9c2ac7d5fd3144c9196c980778bf4