[INFO] cloning repository https://github.com/FranksMa/learn_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FranksMa/learn_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFranksMa%2Flearn_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFranksMa%2Flearn_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 56f01ae865e0fcabc95079b5180c15c6f4fd6156
[INFO] testing FranksMa/learn_rust against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFranksMa%2Flearn_rust" "/workspace/builds/worker-109/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-109/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FranksMa/learn_rust 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/FranksMa/learn_rust
[INFO] finished tweaking git repo https://github.com/FranksMa/learn_rust
[INFO] tweaked toml for git repo https://github.com/FranksMa/learn_rust written to /workspace/builds/worker-109/source/Cargo.toml
[INFO] crate git repo https://github.com/FranksMa/learn_rust 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/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] 60d404f5fc6c7d020642fdb533d7125cb432c98305611b0dbef1e779412e8a5f
[INFO] running `Command { std: "docker" "start" "-a" "60d404f5fc6c7d020642fdb533d7125cb432c98305611b0dbef1e779412e8a5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60d404f5fc6c7d020642fdb533d7125cb432c98305611b0dbef1e779412e8a5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60d404f5fc6c7d020642fdb533d7125cb432c98305611b0dbef1e779412e8a5f", kill_on_drop: false }`
[INFO] [stdout] 60d404f5fc6c7d020642fdb533d7125cb432c98305611b0dbef1e779412e8a5f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/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] 8395ef4c31e424feb25224ce9482b7744116bee75bc2d6fae6fb7a49cc6ab49b
[INFO] running `Command { std: "docker" "start" "-a" "8395ef4c31e424feb25224ce9482b7744116bee75bc2d6fae6fb7a49cc6ab49b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]    Compiling battery v0.7.8
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling uom v0.30.0
[INFO] [stderr]    Compiling learn_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.99s
[INFO] running `Command { std: "docker" "inspect" "8395ef4c31e424feb25224ce9482b7744116bee75bc2d6fae6fb7a49cc6ab49b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8395ef4c31e424feb25224ce9482b7744116bee75bc2d6fae6fb7a49cc6ab49b", kill_on_drop: false }`
[INFO] [stdout] 8395ef4c31e424feb25224ce9482b7744116bee75bc2d6fae6fb7a49cc6ab49b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/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] dbaee2e6a84a392144abfe2e10c97466d7ce564885db28ccb18be82fb35ae2cc
[INFO] running `Command { std: "docker" "start" "-a" "dbaee2e6a84a392144abfe2e10c97466d7ce564885db28ccb18be82fb35ae2cc", kill_on_drop: false }`
[INFO] [stderr]    Compiling learn_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "dbaee2e6a84a392144abfe2e10c97466d7ce564885db28ccb18be82fb35ae2cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dbaee2e6a84a392144abfe2e10c97466d7ce564885db28ccb18be82fb35ae2cc", kill_on_drop: false }`
[INFO] [stdout] dbaee2e6a84a392144abfe2e10c97466d7ce564885db28ccb18be82fb35ae2cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/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] 0f38b01d6be1a42b3b16c5a034779f53df7572d3941c6fb7444b5e04989061b8
[INFO] running `Command { std: "docker" "start" "-a" "0f38b01d6be1a42b3b16c5a034779f53df7572d3941c6fb7444b5e04989061b8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4m 01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/learn_rust-e99ad468eada9f43)
[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" "0f38b01d6be1a42b3b16c5a034779f53df7572d3941c6fb7444b5e04989061b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f38b01d6be1a42b3b16c5a034779f53df7572d3941c6fb7444b5e04989061b8", kill_on_drop: false }`
[INFO] [stdout] 0f38b01d6be1a42b3b16c5a034779f53df7572d3941c6fb7444b5e04989061b8