[INFO] cloning repository https://github.com/TheGhostHuCodes/rust-error-handling-case-study
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TheGhostHuCodes/rust-error-handling-case-study" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheGhostHuCodes%2Frust-error-handling-case-study", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTheGhostHuCodes%2Frust-error-handling-case-study'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3c3a1aeaafe9abcb860c67f90c87f658b297be17
[INFO] testing TheGhostHuCodes/rust-error-handling-case-study 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%2FTheGhostHuCodes%2Frust-error-handling-case-study" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TheGhostHuCodes/rust-error-handling-case-study 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/TheGhostHuCodes/rust-error-handling-case-study
[INFO] finished tweaking git repo https://github.com/TheGhostHuCodes/rust-error-handling-case-study
[INFO] tweaked toml for git repo https://github.com/TheGhostHuCodes/rust-error-handling-case-study written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/TheGhostHuCodes/rust-error-handling-case-study 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 33595cedf0fdb5b620ad3f86a67dc6a2d190a797879031abf2eca4d265d19355
[INFO] running `Command { std: "docker" "start" "-a" "33595cedf0fdb5b620ad3f86a67dc6a2d190a797879031abf2eca4d265d19355", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "33595cedf0fdb5b620ad3f86a67dc6a2d190a797879031abf2eca4d265d19355", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "33595cedf0fdb5b620ad3f86a67dc6a2d190a797879031abf2eca4d265d19355", kill_on_drop: false }`
[INFO] [stdout] 33595cedf0fdb5b620ad3f86a67dc6a2d190a797879031abf2eca4d265d19355
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 06667643b4dc630a66e913ba222aa5425a7276495ba6b5493f97cd8fad9d617a
[INFO] running `Command { std: "docker" "start" "-a" "06667643b4dc630a66e913ba222aa5425a7276495ba6b5493f97cd8fad9d617a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.17
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling syn v1.0.29
[INFO] [stderr]    Compiling serde v1.0.111
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling strsim v0.9.3
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling csv-core v0.1.10
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]    Compiling bstr v0.2.13
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling csv v1.1.3
[INFO] [stderr]    Compiling rust-error-handling-case-study v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.33s
[INFO] running `Command { std: "docker" "inspect" "06667643b4dc630a66e913ba222aa5425a7276495ba6b5493f97cd8fad9d617a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "06667643b4dc630a66e913ba222aa5425a7276495ba6b5493f97cd8fad9d617a", kill_on_drop: false }`
[INFO] [stdout] 06667643b4dc630a66e913ba222aa5425a7276495ba6b5493f97cd8fad9d617a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 5a9d4eb8b087e86395884e163730d26b46c1e7680a06e222f311bcd384c02ded
[INFO] running `Command { std: "docker" "start" "-a" "5a9d4eb8b087e86395884e163730d26b46c1e7680a06e222f311bcd384c02ded", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-error-handling-case-study v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.78s
[INFO] running `Command { std: "docker" "inspect" "5a9d4eb8b087e86395884e163730d26b46c1e7680a06e222f311bcd384c02ded", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a9d4eb8b087e86395884e163730d26b46c1e7680a06e222f311bcd384c02ded", kill_on_drop: false }`
[INFO] [stdout] 5a9d4eb8b087e86395884e163730d26b46c1e7680a06e222f311bcd384c02ded
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 6cc0b04ea9ff6c01611d5e0a7332ba45b6565667f0bf351cd694805233d64512
[INFO] running `Command { std: "docker" "start" "-a" "6cc0b04ea9ff6c01611d5e0a7332ba45b6565667f0bf351cd694805233d64512", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_error_handling_case_study-66a16db0b1e15913)
[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" "6cc0b04ea9ff6c01611d5e0a7332ba45b6565667f0bf351cd694805233d64512", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cc0b04ea9ff6c01611d5e0a7332ba45b6565667f0bf351cd694805233d64512", kill_on_drop: false }`
[INFO] [stdout] 6cc0b04ea9ff6c01611d5e0a7332ba45b6565667f0bf351cd694805233d64512