[INFO] fetching crate backing 0.0.0...
[INFO] checking backing-0.0.0 against try#8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346 for pr-86194
[INFO] extracting crate backing 0.0.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate backing 0.0.0 on toolchain 8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate backing 0.0.0
[INFO] finished tweaking crates.io crate backing 0.0.0
[INFO] tweaked toml for crates.io crate backing 0.0.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 52afbeda218669555bbc4eaa75c58f9650773f7e316a0f022baffe4cfd25c1ae
[INFO] running `Command { std: "docker" "start" "-a" "52afbeda218669555bbc4eaa75c58f9650773f7e316a0f022baffe4cfd25c1ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "52afbeda218669555bbc4eaa75c58f9650773f7e316a0f022baffe4cfd25c1ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52afbeda218669555bbc4eaa75c58f9650773f7e316a0f022baffe4cfd25c1ae", kill_on_drop: false }`
[INFO] [stdout] 52afbeda218669555bbc4eaa75c58f9650773f7e316a0f022baffe4cfd25c1ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4a32e416a0a894a5675267b88bc774546712f09d279aed41d8a9ea0b928bc9fb
[INFO] running `Command { std: "docker" "start" "-a" "4a32e416a0a894a5675267b88bc774546712f09d279aed41d8a9ea0b928bc9fb", kill_on_drop: false }`
[INFO] [stderr]     Checking backing v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "4a32e416a0a894a5675267b88bc774546712f09d279aed41d8a9ea0b928bc9fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a32e416a0a894a5675267b88bc774546712f09d279aed41d8a9ea0b928bc9fb", kill_on_drop: false }`
[INFO] [stdout] 4a32e416a0a894a5675267b88bc774546712f09d279aed41d8a9ea0b928bc9fb