[INFO] fetching crate softcore-prelude 0.4.0...
[INFO] building softcore-prelude-0.4.0 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate softcore-prelude 0.4.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate softcore-prelude 0.4.0
[INFO] finished tweaking crates.io crate softcore-prelude 0.4.0
[INFO] tweaked toml for crates.io crate softcore-prelude 0.4.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate softcore-prelude 0.4.0 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 softcore-prelude 0.4.0 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 3b76f1ca4c09fa5734c961a5aac03b008358e70654379354d1cbeee0e18d97c0
[INFO] running `Command { std: "docker" "start" "-a" "3b76f1ca4c09fa5734c961a5aac03b008358e70654379354d1cbeee0e18d97c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b76f1ca4c09fa5734c961a5aac03b008358e70654379354d1cbeee0e18d97c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b76f1ca4c09fa5734c961a5aac03b008358e70654379354d1cbeee0e18d97c0", kill_on_drop: false }`
[INFO] [stdout] 3b76f1ca4c09fa5734c961a5aac03b008358e70654379354d1cbeee0e18d97c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 7337283f10baaa9c059d850ae7126573a2c23d27247c1b621dacaed38cf4cffe
[INFO] running `Command { std: "docker" "start" "-a" "7337283f10baaa9c059d850ae7126573a2c23d27247c1b621dacaed38cf4cffe", kill_on_drop: false }`
[INFO] [stderr]    Compiling softcore-prelude v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "7337283f10baaa9c059d850ae7126573a2c23d27247c1b621dacaed38cf4cffe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7337283f10baaa9c059d850ae7126573a2c23d27247c1b621dacaed38cf4cffe", kill_on_drop: false }`
[INFO] [stdout] 7337283f10baaa9c059d850ae7126573a2c23d27247c1b621dacaed38cf4cffe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 170f3bc3d12d888b5ccc0338498d37262db2c41d43d2442aec0270b83df4f1cf
[INFO] running `Command { std: "docker" "start" "-a" "170f3bc3d12d888b5ccc0338498d37262db2c41d43d2442aec0270b83df4f1cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling softcore-prelude v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "170f3bc3d12d888b5ccc0338498d37262db2c41d43d2442aec0270b83df4f1cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "170f3bc3d12d888b5ccc0338498d37262db2c41d43d2442aec0270b83df4f1cf", kill_on_drop: false }`
[INFO] [stdout] 170f3bc3d12d888b5ccc0338498d37262db2c41d43d2442aec0270b83df4f1cf