[INFO] fetching crate balanced_binary_tree 0.1.0...
[INFO] testing balanced_binary_tree-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate balanced_binary_tree 0.1.0 into /workspace/builds/worker-118/source
[INFO] validating manifest of crates.io crate balanced_binary_tree 0.1.0 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 crates.io crate balanced_binary_tree 0.1.0
[INFO] finished tweaking crates.io crate balanced_binary_tree 0.1.0
[INFO] tweaked toml for crates.io crate balanced_binary_tree 0.1.0 written to /workspace/builds/worker-118/source/Cargo.toml
[INFO] crate crates.io crate balanced_binary_tree 0.1.0 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-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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] 0fbb1ef683ef81906adde9cc20cc06cead51170350345ddb8e5245561a6ba4e1
[INFO] running `Command { std: "docker" "start" "-a" "0fbb1ef683ef81906adde9cc20cc06cead51170350345ddb8e5245561a6ba4e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0fbb1ef683ef81906adde9cc20cc06cead51170350345ddb8e5245561a6ba4e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fbb1ef683ef81906adde9cc20cc06cead51170350345ddb8e5245561a6ba4e1", kill_on_drop: false }`
[INFO] [stdout] 0fbb1ef683ef81906adde9cc20cc06cead51170350345ddb8e5245561a6ba4e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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] 1d7e7d78e6e7e9fa7223fbf745910c4292128262406722c925aa28d474d19de5
[INFO] running `Command { std: "docker" "start" "-a" "1d7e7d78e6e7e9fa7223fbf745910c4292128262406722c925aa28d474d19de5", kill_on_drop: false }`
[INFO] [stderr]    Compiling balanced_binary_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "1d7e7d78e6e7e9fa7223fbf745910c4292128262406722c925aa28d474d19de5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d7e7d78e6e7e9fa7223fbf745910c4292128262406722c925aa28d474d19de5", kill_on_drop: false }`
[INFO] [stdout] 1d7e7d78e6e7e9fa7223fbf745910c4292128262406722c925aa28d474d19de5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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] 1a1ea1ced6731e24edaaad1b67838dae00ae07d666287ca6a92c9000f11227e5
[INFO] running `Command { std: "docker" "start" "-a" "1a1ea1ced6731e24edaaad1b67838dae00ae07d666287ca6a92c9000f11227e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling balanced_binary_tree v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "1a1ea1ced6731e24edaaad1b67838dae00ae07d666287ca6a92c9000f11227e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a1ea1ced6731e24edaaad1b67838dae00ae07d666287ca6a92c9000f11227e5", kill_on_drop: false }`
[INFO] [stdout] 1a1ea1ced6731e24edaaad1b67838dae00ae07d666287ca6a92c9000f11227e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-118/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] ff2c168a554dcf657de70d794296a63865856dfb7d09e7738ee676bf33aa8d31
[INFO] running `Command { std: "docker" "start" "-a" "ff2c168a554dcf657de70d794296a63865856dfb7d09e7738ee676bf33aa8d31", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/balanced_binary_tree-8bd161201cb8a1a8)
[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/balanced_binary_tree-53acc1a97acff6b3)
[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 balanced_binary_tree
[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" "ff2c168a554dcf657de70d794296a63865856dfb7d09e7738ee676bf33aa8d31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff2c168a554dcf657de70d794296a63865856dfb7d09e7738ee676bf33aa8d31", kill_on_drop: false }`
[INFO] [stdout] ff2c168a554dcf657de70d794296a63865856dfb7d09e7738ee676bf33aa8d31