[INFO] fetching crate jjson 0.1.0...
[INFO] checking jjson-0.1.0 against master#8007b506ac5da629f223b755f5a5391edd5f6d01 for pr-88041
[INFO] extracting crate jjson 0.1.0 into /workspace/builds/worker-96/source
[INFO] validating manifest of crates.io crate jjson 0.1.0 on toolchain 8007b506ac5da629f223b755f5a5391edd5f6d01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jjson 0.1.0
[INFO] finished tweaking crates.io crate jjson 0.1.0
[INFO] tweaked toml for crates.io crate jjson 0.1.0 written to /workspace/builds/worker-96/source/Cargo.toml
[INFO] crate crates.io crate jjson 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-96/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-96/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 31940c217d18b11dd388f931b6db6b91fc63c3d5757dfdfaa659c1fe42d83373
[INFO] running `Command { std: "docker" "start" "-a" "31940c217d18b11dd388f931b6db6b91fc63c3d5757dfdfaa659c1fe42d83373", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31940c217d18b11dd388f931b6db6b91fc63c3d5757dfdfaa659c1fe42d83373", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31940c217d18b11dd388f931b6db6b91fc63c3d5757dfdfaa659c1fe42d83373", kill_on_drop: false }`
[INFO] [stdout] 31940c217d18b11dd388f931b6db6b91fc63c3d5757dfdfaa659c1fe42d83373
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-96/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-96/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" "+8007b506ac5da629f223b755f5a5391edd5f6d01" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7795e8cee0b1a163d11972440eebc2c34adc5aefe5f33c1d24a2c2ab28aea9b
[INFO] running `Command { std: "docker" "start" "-a" "d7795e8cee0b1a163d11972440eebc2c34adc5aefe5f33c1d24a2c2ab28aea9b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking jjson v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "d7795e8cee0b1a163d11972440eebc2c34adc5aefe5f33c1d24a2c2ab28aea9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7795e8cee0b1a163d11972440eebc2c34adc5aefe5f33c1d24a2c2ab28aea9b", kill_on_drop: false }`
[INFO] [stdout] d7795e8cee0b1a163d11972440eebc2c34adc5aefe5f33c1d24a2c2ab28aea9b