[INFO] fetching crate serde-json-helpers 0.1.2...
[INFO] checking serde-json-helpers-0.1.2 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate serde-json-helpers 0.1.2 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate serde-json-helpers 0.1.2 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde-json-helpers 0.1.2
[INFO] finished tweaking crates.io crate serde-json-helpers 0.1.2
[INFO] tweaked toml for crates.io crate serde-json-helpers 0.1.2 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6cef710cb3e511153bdb3836ef835c0d170366048aab18280ce43076c7296b74
[INFO] running `Command { std: "docker" "start" "-a" "6cef710cb3e511153bdb3836ef835c0d170366048aab18280ce43076c7296b74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6cef710cb3e511153bdb3836ef835c0d170366048aab18280ce43076c7296b74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cef710cb3e511153bdb3836ef835c0d170366048aab18280ce43076c7296b74", kill_on_drop: false }`
[INFO] [stdout] 6cef710cb3e511153bdb3836ef835c0d170366048aab18280ce43076c7296b74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce597f7cb105ea9e07b7e415004ef2e7741fb5d0444fd90bd2d25ecae7981033
[INFO] running `Command { std: "docker" "start" "-a" "ce597f7cb105ea9e07b7e415004ef2e7741fb5d0444fd90bd2d25ecae7981033", kill_on_drop: false }`
[INFO] [stderr]     Checking proc-macro2 v0.4.30
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking syn v0.15.44
[INFO] [stderr]     Checking serde-json-helpers v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.86s
[INFO] running `Command { std: "docker" "inspect" "ce597f7cb105ea9e07b7e415004ef2e7741fb5d0444fd90bd2d25ecae7981033", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce597f7cb105ea9e07b7e415004ef2e7741fb5d0444fd90bd2d25ecae7981033", kill_on_drop: false }`
[INFO] [stdout] ce597f7cb105ea9e07b7e415004ef2e7741fb5d0444fd90bd2d25ecae7981033