[INFO] fetching crate tc-btree 0.1.7...
[INFO] testing tc-btree-0.1.7 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate tc-btree 0.1.7 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate tc-btree 0.1.7 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 tc-btree 0.1.7
[INFO] finished tweaking crates.io crate tc-btree 0.1.7
[INFO] tweaked toml for crates.io crate tc-btree 0.1.7 written to /workspace/builds/worker-6/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] d3bdd9f46783209d9cdec5d79afaf67af848d657aab25a0a2757bcc7135bf567
[INFO] running `Command { std: "docker" "start" "-a" "d3bdd9f46783209d9cdec5d79afaf67af848d657aab25a0a2757bcc7135bf567", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d3bdd9f46783209d9cdec5d79afaf67af848d657aab25a0a2757bcc7135bf567", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3bdd9f46783209d9cdec5d79afaf67af848d657aab25a0a2757bcc7135bf567", kill_on_drop: false }`
[INFO] [stdout] d3bdd9f46783209d9cdec5d79afaf67af848d657aab25a0a2757bcc7135bf567
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 3079bd3938c41a40db580c950cecadb57f3dfe991a2db4dec796cabb4c7754a1
[INFO] running `Command { std: "docker" "start" "-a" "3079bd3938c41a40db580c950cecadb57f3dfe991a2db4dec796cabb4c7754a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling tc-error v0.2.5
[INFO] [stderr]    Compiling tcgeneric v0.2.2
[INFO] [stderr]    Compiling num v0.2.1
[INFO] [stderr]    Compiling number-general v0.3.12
[INFO] [stderr]    Compiling tc-value v0.2.1
[INFO] [stderr]    Compiling tc-transact v0.8.1
[INFO] [stderr]    Compiling tc-btree v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.70s
[INFO] running `Command { std: "docker" "inspect" "3079bd3938c41a40db580c950cecadb57f3dfe991a2db4dec796cabb4c7754a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3079bd3938c41a40db580c950cecadb57f3dfe991a2db4dec796cabb4c7754a1", kill_on_drop: false }`
[INFO] [stdout] 3079bd3938c41a40db580c950cecadb57f3dfe991a2db4dec796cabb4c7754a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] 657600a5494aa47d426571f2c87d29bd21123736192f77eddd9618de11d069e2
[INFO] running `Command { std: "docker" "start" "-a" "657600a5494aa47d426571f2c87d29bd21123736192f77eddd9618de11d069e2", kill_on_drop: false }`
[INFO] [stderr]    Compiling tc-btree v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.70s
[INFO] running `Command { std: "docker" "inspect" "657600a5494aa47d426571f2c87d29bd21123736192f77eddd9618de11d069e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "657600a5494aa47d426571f2c87d29bd21123736192f77eddd9618de11d069e2", kill_on_drop: false }`
[INFO] [stdout] 657600a5494aa47d426571f2c87d29bd21123736192f77eddd9618de11d069e2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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] d8f49f21089c5925f603e8fce619d37cc152b1c2a488a998e68ca6ebf62adf55
[INFO] running `Command { std: "docker" "start" "-a" "d8f49f21089c5925f603e8fce619d37cc152b1c2a488a998e68ca6ebf62adf55", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/tc_btree-729a3caa7734728e)
[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 tc-btree
[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" "d8f49f21089c5925f603e8fce619d37cc152b1c2a488a998e68ca6ebf62adf55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8f49f21089c5925f603e8fce619d37cc152b1c2a488a998e68ca6ebf62adf55", kill_on_drop: false }`
[INFO] [stdout] d8f49f21089c5925f603e8fce619d37cc152b1c2a488a998e68ca6ebf62adf55