[INFO] fetching crate rust-visitor 0.3.1...
[INFO] building rust-visitor-0.3.1 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate rust-visitor 0.3.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate rust-visitor 0.3.1
[INFO] finished tweaking crates.io crate rust-visitor 0.3.1
[INFO] tweaked toml for crates.io crate rust-visitor 0.3.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rust-visitor 0.3.1 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 44 packages to latest compatible versions
[INFO] [stderr]       Adding ra_ap_syntax v0.0.77 (available: v0.0.301)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded always-assert v0.1.3
[INFO] [stderr]   Downloaded ra_ap_text_edit v0.0.77
[INFO] [stderr]   Downloaded ra_ap_stdx v0.0.77
[INFO] [stderr]   Downloaded smol_str v0.1.24
[INFO] [stderr]   Downloaded rowan v0.14.1
[INFO] [stderr]   Downloaded dashmap v4.0.2
[INFO] [stderr]   Downloaded cov-mark v2.1.0
[INFO] [stderr]   Downloaded ra_ap_la-arena v0.0.77
[INFO] [stderr]   Downloaded countme v2.0.4
[INFO] [stderr]   Downloaded perf-event v0.4.8
[INFO] [stderr]   Downloaded ra_ap_parser v0.0.77
[INFO] [stderr]   Downloaded perf-event-open-sys v4.0.0
[INFO] [stderr]   Downloaded ra_ap_profile v0.0.77
[INFO] [stderr]   Downloaded rustc-ap-rustc_lexer v725.0.0
[INFO] [stderr]   Downloaded ra_ap_syntax v0.0.77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2b644a2f1aebb21145c0950b4693de809adeef0b1d548da713bee3a01a73d41f
[INFO] running `Command { std: "docker" "start" "-a" "2b644a2f1aebb21145c0950b4693de809adeef0b1d548da713bee3a01a73d41f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b644a2f1aebb21145c0950b4693de809adeef0b1d548da713bee3a01a73d41f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b644a2f1aebb21145c0950b4693de809adeef0b1d548da713bee3a01a73d41f", kill_on_drop: false }`
[INFO] [stdout] 2b644a2f1aebb21145c0950b4693de809adeef0b1d548da713bee3a01a73d41f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0757469251eef65dbbf6dda0f8768808fc3bb0ab45b51040d7f2d575e10166a
[INFO] running `Command { std: "docker" "start" "-a" "d0757469251eef65dbbf6dda0f8768808fc3bb0ab45b51040d7f2d575e10166a", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling text-size v1.1.1
[INFO] [stderr]    Compiling always-assert v0.1.3
[INFO] [stderr]    Compiling num_cpus v1.17.0
[INFO] [stderr]    Compiling perf-event-open-sys v4.0.0
[INFO] [stderr]    Compiling drop_bomb v0.1.5
[INFO] [stderr]    Compiling ra_ap_la-arena v0.0.77
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling unicode-xid v0.2.6
[INFO] [stderr]    Compiling ra_ap_text_edit v0.0.77
[INFO] [stderr]    Compiling dashmap v4.0.2
[INFO] [stderr]    Compiling perf-event v0.4.8
[INFO] [stderr]    Compiling rustc-ap-rustc_lexer v725.0.0
[INFO] [stderr]    Compiling ra_ap_parser v0.0.77
[INFO] [stderr]    Compiling ra_ap_stdx v0.0.77
[INFO] [stderr]    Compiling cov-mark v2.1.0
[INFO] [stderr]    Compiling countme v2.0.4
[INFO] [stderr]    Compiling ra_ap_profile v0.0.77
[INFO] [stderr]    Compiling rowan v0.14.1
[INFO] [stderr]    Compiling smol_str v0.1.24
[INFO] [stderr]    Compiling ra_ap_syntax v0.0.77
[INFO] [stderr]    Compiling rust-visitor v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.92s
[INFO] running `Command { std: "docker" "inspect" "d0757469251eef65dbbf6dda0f8768808fc3bb0ab45b51040d7f2d575e10166a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0757469251eef65dbbf6dda0f8768808fc3bb0ab45b51040d7f2d575e10166a", kill_on_drop: false }`
[INFO] [stdout] d0757469251eef65dbbf6dda0f8768808fc3bb0ab45b51040d7f2d575e10166a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ad56d537300d3cee89bd499f2a1c32bf5a57ff534745180ea8bf04a12dbe1ca
[INFO] running `Command { std: "docker" "start" "-a" "5ad56d537300d3cee89bd499f2a1c32bf5a57ff534745180ea8bf04a12dbe1ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-visitor v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "5ad56d537300d3cee89bd499f2a1c32bf5a57ff534745180ea8bf04a12dbe1ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ad56d537300d3cee89bd499f2a1c32bf5a57ff534745180ea8bf04a12dbe1ca", kill_on_drop: false }`
[INFO] [stdout] 5ad56d537300d3cee89bd499f2a1c32bf5a57ff534745180ea8bf04a12dbe1ca