[INFO] fetching crate tb-303 0.0.0...
[INFO] testing tb-303-0.0.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate tb-303 0.0.0 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate tb-303 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 tb-303 0.0.0
[INFO] finished tweaking crates.io crate tb-303 0.0.0
[INFO] tweaked toml for crates.io crate tb-303 0.0.0 written to /workspace/builds/worker-15/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] 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 52989999da9bbc0c6add09ad18703ced5a86567648134a124742626d44fbaca7
[INFO] running `Command { std: "docker" "start" "-a" "52989999da9bbc0c6add09ad18703ced5a86567648134a124742626d44fbaca7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52989999da9bbc0c6add09ad18703ced5a86567648134a124742626d44fbaca7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52989999da9bbc0c6add09ad18703ced5a86567648134a124742626d44fbaca7", kill_on_drop: false }`
[INFO] [stdout] 52989999da9bbc0c6add09ad18703ced5a86567648134a124742626d44fbaca7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 144d3350610329bc3b32a91088238b7e199ceac35856b761c33240b111a5e4b3
[INFO] running `Command { std: "docker" "start" "-a" "144d3350610329bc3b32a91088238b7e199ceac35856b761c33240b111a5e4b3", kill_on_drop: false }`
[INFO] [stderr]    Compiling tb-303 v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "144d3350610329bc3b32a91088238b7e199ceac35856b761c33240b111a5e4b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "144d3350610329bc3b32a91088238b7e199ceac35856b761c33240b111a5e4b3", kill_on_drop: false }`
[INFO] [stdout] 144d3350610329bc3b32a91088238b7e199ceac35856b761c33240b111a5e4b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] c4487defd210013249fdc068e49c1b7e6e1320a7b8c1d36aefd38feaa8ebea49
[INFO] running `Command { std: "docker" "start" "-a" "c4487defd210013249fdc068e49c1b7e6e1320a7b8c1d36aefd38feaa8ebea49", kill_on_drop: false }`
[INFO] [stderr]    Compiling tb-303 v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "c4487defd210013249fdc068e49c1b7e6e1320a7b8c1d36aefd38feaa8ebea49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4487defd210013249fdc068e49c1b7e6e1320a7b8c1d36aefd38feaa8ebea49", kill_on_drop: false }`
[INFO] [stdout] c4487defd210013249fdc068e49c1b7e6e1320a7b8c1d36aefd38feaa8ebea49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 11f0fb9e9079beb3cd4e2a4206ce7842f49bfb4f8f24dbcb294da6c35df53d9f
[INFO] running `Command { std: "docker" "start" "-a" "11f0fb9e9079beb3cd4e2a4206ce7842f49bfb4f8f24dbcb294da6c35df53d9f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tb_303-c6b37867ddb545de)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests tb-303
[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] [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" "11f0fb9e9079beb3cd4e2a4206ce7842f49bfb4f8f24dbcb294da6c35df53d9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "11f0fb9e9079beb3cd4e2a4206ce7842f49bfb4f8f24dbcb294da6c35df53d9f", kill_on_drop: false }`
[INFO] [stdout] 11f0fb9e9079beb3cd4e2a4206ce7842f49bfb4f8f24dbcb294da6c35df53d9f