[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 beta-2021-09-08 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-53/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-53/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/helgardferreira/rust_collection_exercises 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/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-53/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" "+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-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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] e078a81082b2261f2b57e592998ef55558fd476bc5c34ddc037416cef3b1a7b7
[INFO] running `Command { std: "docker" "start" "-a" "e078a81082b2261f2b57e592998ef55558fd476bc5c34ddc037416cef3b1a7b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e078a81082b2261f2b57e592998ef55558fd476bc5c34ddc037416cef3b1a7b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e078a81082b2261f2b57e592998ef55558fd476bc5c34ddc037416cef3b1a7b7", kill_on_drop: false }`
[INFO] [stdout] e078a81082b2261f2b57e592998ef55558fd476bc5c34ddc037416cef3b1a7b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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] cd93fe1f5affe96a92799999055390805d6e5a187b9a21cc39beb00ae2b9cac2
[INFO] running `Command { std: "docker" "start" "-a" "cd93fe1f5affe96a92799999055390805d6e5a187b9a21cc39beb00ae2b9cac2", kill_on_drop: false }`
[INFO] [stderr]    Compiling collection_exercises v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.38s
[INFO] running `Command { std: "docker" "inspect" "cd93fe1f5affe96a92799999055390805d6e5a187b9a21cc39beb00ae2b9cac2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd93fe1f5affe96a92799999055390805d6e5a187b9a21cc39beb00ae2b9cac2", kill_on_drop: false }`
[INFO] [stdout] cd93fe1f5affe96a92799999055390805d6e5a187b9a21cc39beb00ae2b9cac2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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] 18635339be693546627ebd583a353bf04823b08e35b49f88c64bde8844293cb0
[INFO] running `Command { std: "docker" "start" "-a" "18635339be693546627ebd583a353bf04823b08e35b49f88c64bde8844293cb0", 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 2.96s
[INFO] running `Command { std: "docker" "inspect" "18635339be693546627ebd583a353bf04823b08e35b49f88c64bde8844293cb0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18635339be693546627ebd583a353bf04823b08e35b49f88c64bde8844293cb0", kill_on_drop: false }`
[INFO] [stdout] 18635339be693546627ebd583a353bf04823b08e35b49f88c64bde8844293cb0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-53/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] e3bf3983a93212b02664e691e88e347b9ec23966f96c15c517eac1f403a6ae0c
[INFO] running `Command { std: "docker" "start" "-a" "e3bf3983a93212b02664e691e88e347b9ec23966f96c15c517eac1f403a6ae0c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.67s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/collection_exercises-54011f0c1d390157)
[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-3c67e77d3adc486a)
[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" "e3bf3983a93212b02664e691e88e347b9ec23966f96c15c517eac1f403a6ae0c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3bf3983a93212b02664e691e88e347b9ec23966f96c15c517eac1f403a6ae0c", kill_on_drop: false }`
[INFO] [stdout] e3bf3983a93212b02664e691e88e347b9ec23966f96c15c517eac1f403a6ae0c