[INFO] fetching crate stk-json 0.2.1...
[INFO] checking stk-json-0.2.1 against try#b0d0ea232bdae12fa8da8491a91ae1db029990ef for pr-84037
[INFO] extracting crate stk-json 0.2.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate stk-json 0.2.1 on toolchain b0d0ea232bdae12fa8da8491a91ae1db029990ef
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stk-json 0.2.1
[INFO] finished tweaking crates.io crate stk-json 0.2.1
[INFO] tweaked toml for crates.io crate stk-json 0.2.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded stk v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8a8759c238deb00352e9337e59ed880982a2be6bcc89ef66420aa1cf1fbfdc33
[INFO] running `Command { std: "docker" "start" "-a" "8a8759c238deb00352e9337e59ed880982a2be6bcc89ef66420aa1cf1fbfdc33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a8759c238deb00352e9337e59ed880982a2be6bcc89ef66420aa1cf1fbfdc33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a8759c238deb00352e9337e59ed880982a2be6bcc89ef66420aa1cf1fbfdc33", kill_on_drop: false }`
[INFO] [stdout] 8a8759c238deb00352e9337e59ed880982a2be6bcc89ef66420aa1cf1fbfdc33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c5d3841fdb197b1630f9396d5046bb7cadffb646a6319058de1dcd0b89edd39e
[INFO] running `Command { std: "docker" "start" "-a" "c5d3841fdb197b1630f9396d5046bb7cadffb646a6319058de1dcd0b89edd39e", kill_on_drop: false }`
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling anyhow v1.0.40
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking regex-syntax v0.6.23
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]    Compiling hashbrown v0.8.2
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking ryu v1.0.5
[INFO] [stderr]    Compiling syn v1.0.71
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking twox-hash v1.6.0
[INFO] [stderr]     Checking regex v1.4.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking stk v0.2.1
[INFO] [stderr]     Checking stk-json v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.67s
[INFO] running `Command { std: "docker" "inspect" "c5d3841fdb197b1630f9396d5046bb7cadffb646a6319058de1dcd0b89edd39e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5d3841fdb197b1630f9396d5046bb7cadffb646a6319058de1dcd0b89edd39e", kill_on_drop: false }`
[INFO] [stdout] c5d3841fdb197b1630f9396d5046bb7cadffb646a6319058de1dcd0b89edd39e