[INFO] fetching crate ungrammar2json 1.0.0...
[INFO] checking ungrammar2json-1.0.0 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] extracting crate ungrammar2json 1.0.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate ungrammar2json 1.0.0 on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ungrammar2json 1.0.0
[INFO] finished tweaking crates.io crate ungrammar2json 1.0.0
[INFO] tweaked toml for crates.io crate ungrammar2json 1.0.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate ungrammar2json 1.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9e49b32bab4430796b5ae2ee112538d317141dbbd1400ff5b6a0e17e0030d42c
[INFO] running `Command { std: "docker" "start" "-a" "9e49b32bab4430796b5ae2ee112538d317141dbbd1400ff5b6a0e17e0030d42c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e49b32bab4430796b5ae2ee112538d317141dbbd1400ff5b6a0e17e0030d42c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e49b32bab4430796b5ae2ee112538d317141dbbd1400ff5b6a0e17e0030d42c", kill_on_drop: false }`
[INFO] [stdout] 9e49b32bab4430796b5ae2ee112538d317141dbbd1400ff5b6a0e17e0030d42c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd7b08dd77fa36e4586729f3fac6195926e524894906fabfd6cb86156dc44f8b
[INFO] running `Command { std: "docker" "start" "-a" "dd7b08dd77fa36e4586729f3fac6195926e524894906fabfd6cb86156dc44f8b", kill_on_drop: false }`
[INFO] [stderr]     Checking ungrammar v1.1.0
[INFO] [stderr]     Checking write-json v0.1.1
[INFO] [stderr]     Checking ungrammar2json v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "dd7b08dd77fa36e4586729f3fac6195926e524894906fabfd6cb86156dc44f8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd7b08dd77fa36e4586729f3fac6195926e524894906fabfd6cb86156dc44f8b", kill_on_drop: false }`
[INFO] [stdout] dd7b08dd77fa36e4586729f3fac6195926e524894906fabfd6cb86156dc44f8b