[INFO] fetching crate tween 0.0.0...
[INFO] testing tween-0.0.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate tween 0.0.0 into /workspace/builds/worker-69/source
[INFO] validating manifest of crates.io crate tween 0.0.0 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 crates.io crate tween 0.0.0
[INFO] finished tweaking crates.io crate tween 0.0.0
[INFO] tweaked toml for crates.io crate tween 0.0.0 written to /workspace/builds/worker-69/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/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] a4496accdfc737d1e73aae42b34d5851cbc7d5053d819c82085e5c11898743bf
[INFO] running `Command { std: "docker" "start" "-a" "a4496accdfc737d1e73aae42b34d5851cbc7d5053d819c82085e5c11898743bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4496accdfc737d1e73aae42b34d5851cbc7d5053d819c82085e5c11898743bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4496accdfc737d1e73aae42b34d5851cbc7d5053d819c82085e5c11898743bf", kill_on_drop: false }`
[INFO] [stdout] a4496accdfc737d1e73aae42b34d5851cbc7d5053d819c82085e5c11898743bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/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] d30bb8c026db50ed02b0dbb6eeb46fce6cf8f9bb5a47e95e92350ff0e34d92a0
[INFO] running `Command { std: "docker" "start" "-a" "d30bb8c026db50ed02b0dbb6eeb46fce6cf8f9bb5a47e95e92350ff0e34d92a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling tween v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.03s
[INFO] running `Command { std: "docker" "inspect" "d30bb8c026db50ed02b0dbb6eeb46fce6cf8f9bb5a47e95e92350ff0e34d92a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d30bb8c026db50ed02b0dbb6eeb46fce6cf8f9bb5a47e95e92350ff0e34d92a0", kill_on_drop: false }`
[INFO] [stdout] d30bb8c026db50ed02b0dbb6eeb46fce6cf8f9bb5a47e95e92350ff0e34d92a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/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] 9c021c4705b433d2cd4d7d3202040823d346e47267426e0a4697cf9d75159aef
[INFO] running `Command { std: "docker" "start" "-a" "9c021c4705b433d2cd4d7d3202040823d346e47267426e0a4697cf9d75159aef", kill_on_drop: false }`
[INFO] [stderr]    Compiling tween v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "9c021c4705b433d2cd4d7d3202040823d346e47267426e0a4697cf9d75159aef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c021c4705b433d2cd4d7d3202040823d346e47267426e0a4697cf9d75159aef", kill_on_drop: false }`
[INFO] [stdout] 9c021c4705b433d2cd4d7d3202040823d346e47267426e0a4697cf9d75159aef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-69/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] edaf893195ff9f91573d851e93fd76f24c55dd5d10f7ff85846bcd61d4d92af1
[INFO] running `Command { std: "docker" "start" "-a" "edaf893195ff9f91573d851e93fd76f24c55dd5d10f7ff85846bcd61d4d92af1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tween-c3fcd65c773b7c9a)
[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 tween
[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" "edaf893195ff9f91573d851e93fd76f24c55dd5d10f7ff85846bcd61d4d92af1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "edaf893195ff9f91573d851e93fd76f24c55dd5d10f7ff85846bcd61d4d92af1", kill_on_drop: false }`
[INFO] [stdout] edaf893195ff9f91573d851e93fd76f24c55dd5d10f7ff85846bcd61d4d92af1