[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 1.55.0 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-80/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-80/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kooparse/coding_problems 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/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-80/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" "+1.55.0" "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-80/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/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] a870d8bb88715b91cc5910961aa9036bdafc0069b1fcb81caf126bda163d6cdf
[INFO] running `Command { std: "docker" "start" "-a" "a870d8bb88715b91cc5910961aa9036bdafc0069b1fcb81caf126bda163d6cdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a870d8bb88715b91cc5910961aa9036bdafc0069b1fcb81caf126bda163d6cdf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a870d8bb88715b91cc5910961aa9036bdafc0069b1fcb81caf126bda163d6cdf", kill_on_drop: false }`
[INFO] [stdout] a870d8bb88715b91cc5910961aa9036bdafc0069b1fcb81caf126bda163d6cdf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/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] da02a71260473ee283f4218d7fc6d8471183e68efd96abb7cc9e349ebdabe65e
[INFO] running `Command { std: "docker" "start" "-a" "da02a71260473ee283f4218d7fc6d8471183e68efd96abb7cc9e349ebdabe65e", 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 0.58s
[INFO] running `Command { std: "docker" "inspect" "da02a71260473ee283f4218d7fc6d8471183e68efd96abb7cc9e349ebdabe65e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da02a71260473ee283f4218d7fc6d8471183e68efd96abb7cc9e349ebdabe65e", kill_on_drop: false }`
[INFO] [stdout] da02a71260473ee283f4218d7fc6d8471183e68efd96abb7cc9e349ebdabe65e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/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] a72c689679aa9f508db965d251ffe882ee4a4f98eed146bd6f7a12689b9662de
[INFO] running `Command { std: "docker" "start" "-a" "a72c689679aa9f508db965d251ffe882ee4a4f98eed146bd6f7a12689b9662de", kill_on_drop: false }`
[INFO] [stderr]    Compiling coding_interview v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "a72c689679aa9f508db965d251ffe882ee4a4f98eed146bd6f7a12689b9662de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a72c689679aa9f508db965d251ffe882ee4a4f98eed146bd6f7a12689b9662de", kill_on_drop: false }`
[INFO] [stdout] a72c689679aa9f508db965d251ffe882ee4a4f98eed146bd6f7a12689b9662de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-80/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] 7c928c802b87618f47738ccfa8be0c3f7859e8200cb68ff2aa8fd494e210d38e
[INFO] running `Command { std: "docker" "start" "-a" "7c928c802b87618f47738ccfa8be0c3f7859e8200cb68ff2aa8fd494e210d38e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/coding_interview-4a1e78c01aba307c)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests coding_interview
[INFO] [stdout] running 1 test
[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" "7c928c802b87618f47738ccfa8be0c3f7859e8200cb68ff2aa8fd494e210d38e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c928c802b87618f47738ccfa8be0c3f7859e8200cb68ff2aa8fd494e210d38e", kill_on_drop: false }`
[INFO] [stdout] 7c928c802b87618f47738ccfa8be0c3f7859e8200cb68ff2aa8fd494e210d38e