[INFO] cloning repository https://github.com/mcueto/rust-book-chapter-3
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mcueto/rust-book-chapter-3" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcueto%2Frust-book-chapter-3", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcueto%2Frust-book-chapter-3'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 97f27c9df9a8d062c32dd13586a62a179e1b4822
[INFO] testing mcueto/rust-book-chapter-3 against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcueto%2Frust-book-chapter-3" "/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/mcueto/rust-book-chapter-3 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/mcueto/rust-book-chapter-3
[INFO] finished tweaking git repo https://github.com/mcueto/rust-book-chapter-3
[INFO] tweaked toml for git repo https://github.com/mcueto/rust-book-chapter-3 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/mcueto/rust-book-chapter-3 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] 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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d9b17dc1690bec7b75205c936ab23f665006abe9341d17f5e1056103731d54c
[INFO] running `Command { std: "docker" "start" "-a" "1d9b17dc1690bec7b75205c936ab23f665006abe9341d17f5e1056103731d54c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d9b17dc1690bec7b75205c936ab23f665006abe9341d17f5e1056103731d54c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d9b17dc1690bec7b75205c936ab23f665006abe9341d17f5e1056103731d54c", kill_on_drop: false }`
[INFO] [stdout] 1d9b17dc1690bec7b75205c936ab23f665006abe9341d17f5e1056103731d54c
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 288ac131c2a874718212b60c5ecfa1675205bdfc0a979e6d76e45374452f58e1
[INFO] running `Command { std: "docker" "start" "-a" "288ac131c2a874718212b60c5ecfa1675205bdfc0a979e6d76e45374452f58e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling variables v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "288ac131c2a874718212b60c5ecfa1675205bdfc0a979e6d76e45374452f58e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "288ac131c2a874718212b60c5ecfa1675205bdfc0a979e6d76e45374452f58e1", kill_on_drop: false }`
[INFO] [stdout] 288ac131c2a874718212b60c5ecfa1675205bdfc0a979e6d76e45374452f58e1
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e9ef6794379fce30e89ff74a6fb3dc33023bee51df05bec1c6b14e69925d12a2
[INFO] running `Command { std: "docker" "start" "-a" "e9ef6794379fce30e89ff74a6fb3dc33023bee51df05bec1c6b14e69925d12a2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling variables v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.33s
[INFO] running `Command { std: "docker" "inspect" "e9ef6794379fce30e89ff74a6fb3dc33023bee51df05bec1c6b14e69925d12a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9ef6794379fce30e89ff74a6fb3dc33023bee51df05bec1c6b14e69925d12a2", kill_on_drop: false }`
[INFO] [stdout] e9ef6794379fce30e89ff74a6fb3dc33023bee51df05bec1c6b14e69925d12a2
[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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 243edf637db89e6a328b337d8857d39c542de0905d6d53ef4dc95f11c895ed66
[INFO] running `Command { std: "docker" "start" "-a" "243edf637db89e6a328b337d8857d39c542de0905d6d53ef4dc95f11c895ed66", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 38.42s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/variables-f52178f81450c24a)
[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" "243edf637db89e6a328b337d8857d39c542de0905d6d53ef4dc95f11c895ed66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "243edf637db89e6a328b337d8857d39c542de0905d6d53ef4dc95f11c895ed66", kill_on_drop: false }`
[INFO] [stdout] 243edf637db89e6a328b337d8857d39c542de0905d6d53ef4dc95f11c895ed66