[INFO] fetching crate rust-visitor 0.2.1...
[INFO] checking rust-visitor-0.2.1 against try#575650af7d7ca88602df28e39d27bf3e456c306e for pr-80579
[INFO] extracting crate rust-visitor 0.2.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate rust-visitor 0.2.1 on toolchain 575650af7d7ca88602df28e39d27bf3e456c306e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "read-manifest" "--manifest-path" "Cargo.toml", 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-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "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" "+575650af7d7ca88602df28e39d27bf3e456c306e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ra_ap_text_edit v0.0.16
[INFO] [stderr]   Downloaded ra_ap_stdx v0.0.16
[INFO] [stderr]   Downloaded thin-dst v1.1.0
[INFO] [stderr]   Downloaded drop_bomb v0.1.5
[INFO] [stderr]   Downloaded text-size v1.0.0
[INFO] [stderr]   Downloaded ra_ap_parser v0.0.16
[INFO] [stderr]   Downloaded rowan v0.10.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_lexer v673.0.0
[INFO] [stderr]   Downloaded ra_ap_syntax v0.0.16
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 02c8a60c99b0f2fe81211f1659a458d90e27c1520eb78332bf7160873b387ce9
[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" "02c8a60c99b0f2fe81211f1659a458d90e27c1520eb78332bf7160873b387ce9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02c8a60c99b0f2fe81211f1659a458d90e27c1520eb78332bf7160873b387ce9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02c8a60c99b0f2fe81211f1659a458d90e27c1520eb78332bf7160873b387ce9", kill_on_drop: false }`
[INFO] [stdout] 02c8a60c99b0f2fe81211f1659a458d90e27c1520eb78332bf7160873b387ce9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3708b0497a8739e712e7b7a9465697a5ed94dbe118e282e3aafbb98002c34d34
[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" "3708b0497a8739e712e7b7a9465697a5ed94dbe118e282e3aafbb98002c34d34", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]     Checking text-size v1.0.0
[INFO] [stderr]     Checking drop_bomb v0.1.5
[INFO] [stderr]     Checking thin-dst v1.1.0
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking ra_ap_stdx v0.0.16
[INFO] [stderr]     Checking ra_ap_parser v0.0.16
[INFO] [stderr]     Checking rustc-ap-rustc_lexer v673.0.0
[INFO] [stderr]     Checking ra_ap_text_edit v0.0.16
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]     Checking smol_str v0.1.17
[INFO] [stderr]     Checking rowan v0.10.0
[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 36.19s
[INFO] running `Command { std: "docker" "inspect" "3708b0497a8739e712e7b7a9465697a5ed94dbe118e282e3aafbb98002c34d34", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3708b0497a8739e712e7b7a9465697a5ed94dbe118e282e3aafbb98002c34d34", kill_on_drop: false }`
[INFO] [stdout] 3708b0497a8739e712e7b7a9465697a5ed94dbe118e282e3aafbb98002c34d34