[INFO] cloning repository https://github.com/helgardferreira/rust_collection_exercises
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/helgardferreira/rust_collection_exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhelgardferreira%2Frust_collection_exercises", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhelgardferreira%2Frust_collection_exercises'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e33b297dc7e00c78931cfc140d062aad4baeaaf3
[INFO] testing helgardferreira/rust_collection_exercises against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhelgardferreira%2Frust_collection_exercises" "/workspace/builds/worker-116/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-116/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/helgardferreira/rust_collection_exercises 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/helgardferreira/rust_collection_exercises
[INFO] finished tweaking git repo https://github.com/helgardferreira/rust_collection_exercises
[INFO] tweaked toml for git repo https://github.com/helgardferreira/rust_collection_exercises written to /workspace/builds/worker-116/source/Cargo.toml
[INFO] crate git repo https://github.com/helgardferreira/rust_collection_exercises 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-116/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-116/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] 78f426fc10cb1336367d161d3beb6d84b3a040f7727937b436cd513086e07aa8
[INFO] running `Command { std: "docker" "start" "-a" "78f426fc10cb1336367d161d3beb6d84b3a040f7727937b436cd513086e07aa8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78f426fc10cb1336367d161d3beb6d84b3a040f7727937b436cd513086e07aa8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78f426fc10cb1336367d161d3beb6d84b3a040f7727937b436cd513086e07aa8", kill_on_drop: false }`
[INFO] [stdout] 78f426fc10cb1336367d161d3beb6d84b3a040f7727937b436cd513086e07aa8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-116/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-116/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] b2f487de986e0366b1fc8b8b184c01145dbabbafb1868e253a5ea1415efa95a1
[INFO] running `Command { std: "docker" "start" "-a" "b2f487de986e0366b1fc8b8b184c01145dbabbafb1868e253a5ea1415efa95a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling collection_exercises v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.07s
[INFO] running `Command { std: "docker" "inspect" "b2f487de986e0366b1fc8b8b184c01145dbabbafb1868e253a5ea1415efa95a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2f487de986e0366b1fc8b8b184c01145dbabbafb1868e253a5ea1415efa95a1", kill_on_drop: false }`
[INFO] [stdout] b2f487de986e0366b1fc8b8b184c01145dbabbafb1868e253a5ea1415efa95a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-116/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-116/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] 50f4938504c3a4dcbda8a355b300a25242cc8a2f804844f107e6936d3552f2bc
[INFO] running `Command { std: "docker" "start" "-a" "50f4938504c3a4dcbda8a355b300a25242cc8a2f804844f107e6936d3552f2bc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling collection_exercises v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.92s
[INFO] running `Command { std: "docker" "inspect" "50f4938504c3a4dcbda8a355b300a25242cc8a2f804844f107e6936d3552f2bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50f4938504c3a4dcbda8a355b300a25242cc8a2f804844f107e6936d3552f2bc", kill_on_drop: false }`
[INFO] [stdout] 50f4938504c3a4dcbda8a355b300a25242cc8a2f804844f107e6936d3552f2bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-116/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-116/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] 7b0988f1e07d0001d162cb5720d4ee8ed088811afe73f6df93009e1c2fd80e22
[INFO] running `Command { std: "docker" "start" "-a" "7b0988f1e07d0001d162cb5720d4ee8ed088811afe73f6df93009e1c2fd80e22", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.77s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/collection_exercises-5cb7bbda17b12584)
[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] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/collection_exercises-e8a70db4c3669633)
[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] [stderr]    Doc-tests collection_exercises
[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" "7b0988f1e07d0001d162cb5720d4ee8ed088811afe73f6df93009e1c2fd80e22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b0988f1e07d0001d162cb5720d4ee8ed088811afe73f6df93009e1c2fd80e22", kill_on_drop: false }`
[INFO] [stdout] 7b0988f1e07d0001d162cb5720d4ee8ed088811afe73f6df93009e1c2fd80e22