[INFO] fetching crate seamstress 0.0.1...
[INFO] testing seamstress-0.0.1 against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] extracting crate seamstress 0.0.1 into /workspace/builds/worker-71/source
[INFO] validating manifest of crates.io crate seamstress 0.0.1 on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate seamstress 0.0.1
[INFO] finished tweaking crates.io crate seamstress 0.0.1
[INFO] tweaked toml for crates.io crate seamstress 0.0.1 written to /workspace/builds/worker-71/source/Cargo.toml
[INFO] crate crates.io crate seamstress 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "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-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9301740d19ed56abb8f4afca972ec033730ac17af9b24b367c401807aafc75e6
[INFO] running `Command { std: "docker" "start" "-a" "9301740d19ed56abb8f4afca972ec033730ac17af9b24b367c401807aafc75e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9301740d19ed56abb8f4afca972ec033730ac17af9b24b367c401807aafc75e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9301740d19ed56abb8f4afca972ec033730ac17af9b24b367c401807aafc75e6", kill_on_drop: false }`
[INFO] [stdout] 9301740d19ed56abb8f4afca972ec033730ac17af9b24b367c401807aafc75e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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=forbid" "-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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68f830b511110af42187a4e74db56893f41dff76c71b556df31adb8e3fa2605f
[INFO] running `Command { std: "docker" "start" "-a" "68f830b511110af42187a4e74db56893f41dff76c71b556df31adb8e3fa2605f", kill_on_drop: false }`
[INFO] [stderr]    Compiling seamstress v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "68f830b511110af42187a4e74db56893f41dff76c71b556df31adb8e3fa2605f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68f830b511110af42187a4e74db56893f41dff76c71b556df31adb8e3fa2605f", kill_on_drop: false }`
[INFO] [stdout] 68f830b511110af42187a4e74db56893f41dff76c71b556df31adb8e3fa2605f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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=forbid" "-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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c3f3643420f43f9d182990033961a636ab32c2446c8e713fa444ad7e45841b10
[INFO] running `Command { std: "docker" "start" "-a" "c3f3643420f43f9d182990033961a636ab32c2446c8e713fa444ad7e45841b10", 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] [stderr]    Compiling seamstress v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "c3f3643420f43f9d182990033961a636ab32c2446c8e713fa444ad7e45841b10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c3f3643420f43f9d182990033961a636ab32c2446c8e713fa444ad7e45841b10", kill_on_drop: false }`
[INFO] [stdout] c3f3643420f43f9d182990033961a636ab32c2446c8e713fa444ad7e45841b10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-71/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=forbid" "-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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 36e9891a0d6b0b8d784df9006e1451872f028603512f67e29e7559f14e5a74dc
[INFO] running `Command { std: "docker" "start" "-a" "36e9891a0d6b0b8d784df9006e1451872f028603512f67e29e7559f14e5a74dc", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/seamstress-332e84875a346887)
[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" "36e9891a0d6b0b8d784df9006e1451872f028603512f67e29e7559f14e5a74dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36e9891a0d6b0b8d784df9006e1451872f028603512f67e29e7559f14e5a74dc", kill_on_drop: false }`
[INFO] [stdout] 36e9891a0d6b0b8d784df9006e1451872f028603512f67e29e7559f14e5a74dc