[INFO] fetching crate rust-visitor 0.2.1...
[INFO] checking rust-visitor-0.2.1 against try#b0d0ea232bdae12fa8da8491a91ae1db029990ef for pr-84037
[INFO] extracting crate rust-visitor 0.2.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rust-visitor 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 rust-visitor 0.2.1
[INFO] finished tweaking crates.io crate rust-visitor 0.2.1
[INFO] tweaked toml for crates.io crate rust-visitor 0.2.1 written to /workspace/builds/worker-4/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 text-size v1.1.0
[INFO] [stderr]   Downloaded drop_bomb v0.1.5
[INFO] [stderr]   Downloaded ra_ap_parser v0.0.16
[INFO] [stderr]   Downloaded rustc-ap-rustc_lexer v673.0.0
[INFO] [stderr]   Downloaded ra_ap_stdx v0.0.16
[INFO] [stderr]   Downloaded stable_deref_trait v1.2.0
[INFO] [stderr]   Downloaded ra_ap_syntax v0.0.16
[INFO] [stderr]   Downloaded rowan v0.10.6
[INFO] [stderr]   Downloaded ra_ap_text_edit v0.0.16
[INFO] [stderr]   Downloaded triomphe v0.1.2
[INFO] [stderr]   Downloaded smol_str v0.1.17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stdout] e88c87d7b8f50e2186916adcf09298445ca4ff8e12b61734a34dd3b7df7a8501
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e88c87d7b8f50e2186916adcf09298445ca4ff8e12b61734a34dd3b7df7a8501", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e88c87d7b8f50e2186916adcf09298445ca4ff8e12b61734a34dd3b7df7a8501", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e88c87d7b8f50e2186916adcf09298445ca4ff8e12b61734a34dd3b7df7a8501", kill_on_drop: false }`
[INFO] [stdout] e88c87d7b8f50e2186916adcf09298445ca4ff8e12b61734a34dd3b7df7a8501
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stdout] 6584ac24e9cb2cb29f3a42c8e1d2ef46bf1c515e33db36f2279940abd3955af0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6584ac24e9cb2cb29f3a42c8e1d2ef46bf1c515e33db36f2279940abd3955af0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.71
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]     Checking text-size v1.1.0
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking unicode-xid v0.2.1
[INFO] [stderr]     Checking drop_bomb v0.1.5
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking ra_ap_stdx v0.0.16
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking rustc-ap-rustc_lexer v673.0.0
[INFO] [stderr]     Checking ra_ap_parser v0.0.16
[INFO] [stderr]     Checking ra_ap_text_edit v0.0.16
[INFO] [stderr]     Checking triomphe v0.1.2
[INFO] [stderr]     Checking smol_str v0.1.17
[INFO] [stderr]     Checking rowan v0.10.6
[INFO] [stderr]     Checking ra_ap_syntax v0.0.16
[INFO] [stderr]     Checking rust-visitor v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.92s
[INFO] running `Command { std: "docker" "inspect" "6584ac24e9cb2cb29f3a42c8e1d2ef46bf1c515e33db36f2279940abd3955af0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6584ac24e9cb2cb29f3a42c8e1d2ef46bf1c515e33db36f2279940abd3955af0", kill_on_drop: false }`
[INFO] [stdout] 6584ac24e9cb2cb29f3a42c8e1d2ef46bf1c515e33db36f2279940abd3955af0