[INFO] fetching crate khan_sum 0.1.0...
[INFO] testing khan_sum-0.1.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate khan_sum 0.1.0 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate khan_sum 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 khan_sum 0.1.0
[INFO] finished tweaking crates.io crate khan_sum 0.1.0
[INFO] tweaked toml for crates.io crate khan_sum 0.1.0 written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] fc42c8b2639fada603acac3c02eb455a4e0287e44f54061b20c6aa76e460b556
[INFO] running `Command { std: "docker" "start" "-a" "fc42c8b2639fada603acac3c02eb455a4e0287e44f54061b20c6aa76e460b556", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fc42c8b2639fada603acac3c02eb455a4e0287e44f54061b20c6aa76e460b556", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc42c8b2639fada603acac3c02eb455a4e0287e44f54061b20c6aa76e460b556", kill_on_drop: false }`
[INFO] [stdout] fc42c8b2639fada603acac3c02eb455a4e0287e44f54061b20c6aa76e460b556
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 5f3346e484a963ffdc4a25f8b1f2569a6f67413258b73788c86473a5b421bfa0
[INFO] running `Command { std: "docker" "start" "-a" "5f3346e484a963ffdc4a25f8b1f2569a6f67413258b73788c86473a5b421bfa0", kill_on_drop: false }`
[INFO] [stderr]    Compiling khan_sum v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "5f3346e484a963ffdc4a25f8b1f2569a6f67413258b73788c86473a5b421bfa0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f3346e484a963ffdc4a25f8b1f2569a6f67413258b73788c86473a5b421bfa0", kill_on_drop: false }`
[INFO] [stdout] 5f3346e484a963ffdc4a25f8b1f2569a6f67413258b73788c86473a5b421bfa0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 25f31e7f9891e0490b1de5116e1b71424c9bbae0ea3c2a74660a17f189731bb6
[INFO] running `Command { std: "docker" "start" "-a" "25f31e7f9891e0490b1de5116e1b71424c9bbae0ea3c2a74660a17f189731bb6", kill_on_drop: false }`
[INFO] [stderr]    Compiling khan_sum v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `Command { std: "docker" "inspect" "25f31e7f9891e0490b1de5116e1b71424c9bbae0ea3c2a74660a17f189731bb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25f31e7f9891e0490b1de5116e1b71424c9bbae0ea3c2a74660a17f189731bb6", kill_on_drop: false }`
[INFO] [stdout] 25f31e7f9891e0490b1de5116e1b71424c9bbae0ea3c2a74660a17f189731bb6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 5dcbc32d29bc47f4417a29ad9dedaf862fdd1232c8d448f3c1d093c124edd8a3
[INFO] running `Command { std: "docker" "start" "-a" "5dcbc32d29bc47f4417a29ad9dedaf862fdd1232c8d448f3c1d093c124edd8a3", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/khan_sum-7d4c29e239a67cab)
[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 khan_sum
[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" "5dcbc32d29bc47f4417a29ad9dedaf862fdd1232c8d448f3c1d093c124edd8a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5dcbc32d29bc47f4417a29ad9dedaf862fdd1232c8d448f3c1d093c124edd8a3", kill_on_drop: false }`
[INFO] [stdout] 5dcbc32d29bc47f4417a29ad9dedaf862fdd1232c8d448f3c1d093c124edd8a3