[INFO] cloning repository https://github.com/tomaster777/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/tomaster777/collection_exercises" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomaster777%2Fcollection_exercises", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomaster777%2Fcollection_exercises'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2468ac4fc75d3466543f75c86546859ef6a04ca9
[INFO] testing tomaster777/collection_exercises against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomaster777%2Fcollection_exercises" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tomaster777/collection_exercises on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/tomaster777/collection_exercises
[INFO] finished tweaking git repo https://github.com/tomaster777/collection_exercises
[INFO] tweaked toml for git repo https://github.com/tomaster777/collection_exercises written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/tomaster777/collection_exercises already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7547c944cf2c1c8b8b1054253e1bc45ca438be5c172faf1e735b38575a2febb8
[INFO] running `Command { std: "docker" "start" "-a" "7547c944cf2c1c8b8b1054253e1bc45ca438be5c172faf1e735b38575a2febb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7547c944cf2c1c8b8b1054253e1bc45ca438be5c172faf1e735b38575a2febb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7547c944cf2c1c8b8b1054253e1bc45ca438be5c172faf1e735b38575a2febb8", kill_on_drop: false }`
[INFO] [stdout] 7547c944cf2c1c8b8b1054253e1bc45ca438be5c172faf1e735b38575a2febb8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 12994348b87274fc3c1b69587200dc6e8d203348f7e08f574ce18191bf466fea
[INFO] running `Command { std: "docker" "start" "-a" "12994348b87274fc3c1b69587200dc6e8d203348f7e08f574ce18191bf466fea", kill_on_drop: false }`
[INFO] [stderr]    Compiling collections_exercises v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.23s
[INFO] running `Command { std: "docker" "inspect" "12994348b87274fc3c1b69587200dc6e8d203348f7e08f574ce18191bf466fea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12994348b87274fc3c1b69587200dc6e8d203348f7e08f574ce18191bf466fea", kill_on_drop: false }`
[INFO] [stdout] 12994348b87274fc3c1b69587200dc6e8d203348f7e08f574ce18191bf466fea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] daa8b9db93ee76d4505e442f074609346b7be506036c5fd0490e608f45c20671
[INFO] running `Command { std: "docker" "start" "-a" "daa8b9db93ee76d4505e442f074609346b7be506036c5fd0490e608f45c20671", kill_on_drop: false }`
[INFO] [stderr]    Compiling collections_exercises v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `Command { std: "docker" "inspect" "daa8b9db93ee76d4505e442f074609346b7be506036c5fd0490e608f45c20671", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "daa8b9db93ee76d4505e442f074609346b7be506036c5fd0490e608f45c20671", kill_on_drop: false }`
[INFO] [stdout] daa8b9db93ee76d4505e442f074609346b7be506036c5fd0490e608f45c20671
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7976f6c0cddb84e4aba8f6280f213885230ee2ccccff55b821fd5a7a9ab6b12d
[INFO] running `Command { std: "docker" "start" "-a" "7976f6c0cddb84e4aba8f6280f213885230ee2ccccff55b821fd5a7a9ab6b12d", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/collections_exercises-0418a3bf20f96e15)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::ex_1_check ... ok
[INFO] [stdout] test tests::ex_2_check ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7976f6c0cddb84e4aba8f6280f213885230ee2ccccff55b821fd5a7a9ab6b12d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7976f6c0cddb84e4aba8f6280f213885230ee2ccccff55b821fd5a7a9ab6b12d", kill_on_drop: false }`
[INFO] [stdout] 7976f6c0cddb84e4aba8f6280f213885230ee2ccccff55b821fd5a7a9ab6b12d