[INFO] fetching crate rust-visitor 0.3.1...
[INFO] checking rust-visitor-0.3.1 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate rust-visitor 0.3.1 into /workspace/builds/worker-4-tc2/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-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rust-visitor 0.3.1 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 43 packages to latest compatible versions
[INFO] [stderr]       Adding ra_ap_syntax v0.0.77 (available: v0.0.289)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 508d387d63ac7cdc6b3fa29df22933a16b4330436486793cd263ba3343165c4e
[INFO] running `Command { std: "docker" "start" "-a" "508d387d63ac7cdc6b3fa29df22933a16b4330436486793cd263ba3343165c4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "508d387d63ac7cdc6b3fa29df22933a16b4330436486793cd263ba3343165c4e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "508d387d63ac7cdc6b3fa29df22933a16b4330436486793cd263ba3343165c4e", kill_on_drop: false }`
[INFO] [stdout] 508d387d63ac7cdc6b3fa29df22933a16b4330436486793cd263ba3343165c4e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2aac14a2e226c608df95535f5176de3853ce94cd8edd567aa1c21d7deaa75697
[INFO] running `Command { std: "docker" "start" "-a" "2aac14a2e226c608df95535f5176de3853ce94cd8edd567aa1c21d7deaa75697", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]     Checking cfg-if v1.0.1
[INFO] [stderr]     Checking rustc-hash v1.1.0
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]     Checking text-size v1.1.1
[INFO] [stderr]     Checking always-assert v0.1.3
[INFO] [stderr]    Compiling paste v1.0.15
[INFO] [stderr]     Checking drop_bomb v0.1.5
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking ra_ap_la-arena v0.0.77
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]     Checking unicode-xid v0.2.6
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]     Checking rustc-ap-rustc_lexer v725.0.0
[INFO] [stderr]     Checking ra_ap_text_edit v0.0.77
[INFO] [stderr]     Checking ra_ap_parser v0.0.77
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking cov-mark v2.0.0
[INFO] [stderr]     Checking num_cpus v1.17.0
[INFO] [stderr]     Checking perf-event-open-sys v4.0.0
[INFO] [stderr]     Checking ra_ap_stdx v0.0.77
[INFO] [stderr]     Checking dashmap v4.0.2
[INFO] [stderr]     Checking perf-event v0.4.8
[INFO] [stderr]     Checking countme v2.0.4
[INFO] [stderr]     Checking ra_ap_profile v0.0.77
[INFO] [stderr]     Checking rowan v0.14.1
[INFO] [stderr]     Checking smol_str v0.1.24
[INFO] [stderr]     Checking ra_ap_syntax v0.0.77
[INFO] [stderr]     Checking rust-visitor v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.69s
[INFO] running `Command { std: "docker" "inspect" "2aac14a2e226c608df95535f5176de3853ce94cd8edd567aa1c21d7deaa75697", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2aac14a2e226c608df95535f5176de3853ce94cd8edd567aa1c21d7deaa75697", kill_on_drop: false }`
[INFO] [stdout] 2aac14a2e226c608df95535f5176de3853ce94cd8edd567aa1c21d7deaa75697