[INFO] fetching crate u8su 0.6.0...
[INFO] building u8su-0.6.0 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate u8su 0.6.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate u8su 0.6.0
[INFO] finished tweaking crates.io crate u8su 0.6.0
[INFO] tweaked toml for crates.io crate u8su 0.6.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate u8su 0.6.0 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate u8su 0.6.0 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8261008bb747fe898cabfe23e3336fb50ff1829615b27b38929535c9c25c9f21
[INFO] running `Command { std: "docker" "start" "-a" "8261008bb747fe898cabfe23e3336fb50ff1829615b27b38929535c9c25c9f21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8261008bb747fe898cabfe23e3336fb50ff1829615b27b38929535c9c25c9f21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8261008bb747fe898cabfe23e3336fb50ff1829615b27b38929535c9c25c9f21", kill_on_drop: false }`
[INFO] [stdout] 8261008bb747fe898cabfe23e3336fb50ff1829615b27b38929535c9c25c9f21
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 15e2e82720d82aa53f1581ba47e5baac15dfe075271a4071cd1101a6ef15bc47
[INFO] running `Command { std: "docker" "start" "-a" "15e2e82720d82aa53f1581ba47e5baac15dfe075271a4071cd1101a6ef15bc47", kill_on_drop: false }`
[INFO] [stderr]    Compiling u8su v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "15e2e82720d82aa53f1581ba47e5baac15dfe075271a4071cd1101a6ef15bc47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15e2e82720d82aa53f1581ba47e5baac15dfe075271a4071cd1101a6ef15bc47", kill_on_drop: false }`
[INFO] [stdout] 15e2e82720d82aa53f1581ba47e5baac15dfe075271a4071cd1101a6ef15bc47
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 826a62686496fa0afe5b6d8276525bc962477e52e2d2eb29ac72172aa0dd427e
[INFO] running `Command { std: "docker" "start" "-a" "826a62686496fa0afe5b6d8276525bc962477e52e2d2eb29ac72172aa0dd427e", kill_on_drop: false }`
[INFO] [stderr]    Compiling u8su v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "826a62686496fa0afe5b6d8276525bc962477e52e2d2eb29ac72172aa0dd427e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "826a62686496fa0afe5b6d8276525bc962477e52e2d2eb29ac72172aa0dd427e", kill_on_drop: false }`
[INFO] [stdout] 826a62686496fa0afe5b6d8276525bc962477e52e2d2eb29ac72172aa0dd427e