[INFO] fetching crate umc 0.0.1...
[INFO] building umc-0.0.1 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate umc 0.0.1 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate umc 0.0.1
[INFO] finished tweaking crates.io crate umc 0.0.1
[INFO] tweaked toml for crates.io crate umc 0.0.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate umc 0.0.1 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate umc 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fb1359aa857e12fbb764f4c2da7299e5165ddb3e381c51c5c6f5f78622819779
[INFO] running `Command { std: "docker" "start" "-a" "fb1359aa857e12fbb764f4c2da7299e5165ddb3e381c51c5c6f5f78622819779", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb1359aa857e12fbb764f4c2da7299e5165ddb3e381c51c5c6f5f78622819779", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb1359aa857e12fbb764f4c2da7299e5165ddb3e381c51c5c6f5f78622819779", kill_on_drop: false }`
[INFO] [stdout] fb1359aa857e12fbb764f4c2da7299e5165ddb3e381c51c5c6f5f78622819779
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 947559ca79c1e684c3aefe1fc082ce39779d09786fbe65cdeeeec120effa3f5d
[INFO] running `Command { std: "docker" "start" "-a" "947559ca79c1e684c3aefe1fc082ce39779d09786fbe65cdeeeec120effa3f5d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]    Compiling iana-time-zone v0.1.60
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling chrono v0.4.37
[INFO] [stderr]    Compiling umc v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.84s
[INFO] running `Command { std: "docker" "inspect" "947559ca79c1e684c3aefe1fc082ce39779d09786fbe65cdeeeec120effa3f5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "947559ca79c1e684c3aefe1fc082ce39779d09786fbe65cdeeeec120effa3f5d", kill_on_drop: false }`
[INFO] [stdout] 947559ca79c1e684c3aefe1fc082ce39779d09786fbe65cdeeeec120effa3f5d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 242f99c90d958dac6ad52ed312374bda8d6dee31950ae104c86b4eb9e1cf3290
[INFO] running `Command { std: "docker" "start" "-a" "242f99c90d958dac6ad52ed312374bda8d6dee31950ae104c86b4eb9e1cf3290", kill_on_drop: false }`
[INFO] [stderr]    Compiling umc v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "242f99c90d958dac6ad52ed312374bda8d6dee31950ae104c86b4eb9e1cf3290", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "242f99c90d958dac6ad52ed312374bda8d6dee31950ae104c86b4eb9e1cf3290", kill_on_drop: false }`
[INFO] [stdout] 242f99c90d958dac6ad52ed312374bda8d6dee31950ae104c86b4eb9e1cf3290