[INFO] fetching crate libchain 0.0.1...
[INFO] testing libchain-0.0.1 against 1.90.0 for beta-1.91-3
[INFO] extracting crate libchain 0.0.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate libchain 0.0.1
[INFO] finished tweaking crates.io crate libchain 0.0.1
[INFO] tweaked toml for crates.io crate libchain 0.0.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate libchain 0.0.1 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f6b9712dfe1b849e1549c19b6a9afe1ea115c3870ff22b71ca1ae5d2ca73ede0
[INFO] running `Command { std: "docker" "start" "-a" "f6b9712dfe1b849e1549c19b6a9afe1ea115c3870ff22b71ca1ae5d2ca73ede0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6b9712dfe1b849e1549c19b6a9afe1ea115c3870ff22b71ca1ae5d2ca73ede0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6b9712dfe1b849e1549c19b6a9afe1ea115c3870ff22b71ca1ae5d2ca73ede0", kill_on_drop: false }`
[INFO] [stdout] f6b9712dfe1b849e1549c19b6a9afe1ea115c3870ff22b71ca1ae5d2ca73ede0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e50bc3b946a0f3e8305a1eb02c9bf1068b69a0f39cb3b1d74a03bfa607d8a4c0
[INFO] running `Command { std: "docker" "start" "-a" "e50bc3b946a0f3e8305a1eb02c9bf1068b69a0f39cb3b1d74a03bfa607d8a4c0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libchain v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] running `Command { std: "docker" "inspect" "e50bc3b946a0f3e8305a1eb02c9bf1068b69a0f39cb3b1d74a03bfa607d8a4c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e50bc3b946a0f3e8305a1eb02c9bf1068b69a0f39cb3b1d74a03bfa607d8a4c0", kill_on_drop: false }`
[INFO] [stdout] e50bc3b946a0f3e8305a1eb02c9bf1068b69a0f39cb3b1d74a03bfa607d8a4c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bfbdd067d867e4b9adc4b3b1f33ba984679fd62ecf1c686f742a90c4620dc66b
[INFO] running `Command { std: "docker" "start" "-a" "bfbdd067d867e4b9adc4b3b1f33ba984679fd62ecf1c686f742a90c4620dc66b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libchain v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "bfbdd067d867e4b9adc4b3b1f33ba984679fd62ecf1c686f742a90c4620dc66b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfbdd067d867e4b9adc4b3b1f33ba984679fd62ecf1c686f742a90c4620dc66b", kill_on_drop: false }`
[INFO] [stdout] bfbdd067d867e4b9adc4b3b1f33ba984679fd62ecf1c686f742a90c4620dc66b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f459dbf4618fba952861b9f6cd0bb93cdad548b7202ea1064da12e3a1290b5d7
[INFO] running `Command { std: "docker" "start" "-a" "f459dbf4618fba952861b9f6cd0bb93cdad548b7202ea1064da12e3a1290b5d7", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/libchain-4262ed154ebceb53)
[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 libchain
[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" "f459dbf4618fba952861b9f6cd0bb93cdad548b7202ea1064da12e3a1290b5d7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f459dbf4618fba952861b9f6cd0bb93cdad548b7202ea1064da12e3a1290b5d7", kill_on_drop: false }`
[INFO] [stdout] f459dbf4618fba952861b9f6cd0bb93cdad548b7202ea1064da12e3a1290b5d7