[INFO] fetching crate rust-visitor 0.3.0...
[INFO] testing rust-visitor-0.3.0 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate rust-visitor 0.3.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate rust-visitor 0.3.0 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust-visitor 0.3.0
[INFO] finished tweaking crates.io crate rust-visitor 0.3.0
[INFO] tweaked toml for crates.io crate rust-visitor 0.3.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "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" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded countme v2.0.4
[INFO] [stderr]   Downloaded ra_ap_parser v0.0.77
[INFO] [stderr]   Downloaded ra_ap_text_edit v0.0.77
[INFO] [stderr]   Downloaded ra_ap_profile v0.0.77
[INFO] [stderr]   Downloaded perf-event v0.4.7
[INFO] [stderr]   Downloaded cov-mark v2.0.0-pre.1
[INFO] [stderr]   Downloaded drop_bomb v0.1.5
[INFO] [stderr]   Downloaded always-assert v0.1.2
[INFO] [stderr]   Downloaded rustc-ap-rustc_lexer v725.0.0
[INFO] [stderr]   Downloaded rowan v0.14.1
[INFO] [stderr]   Downloaded text-size v1.1.0
[INFO] [stderr]   Downloaded ra_ap_stdx v0.0.77
[INFO] [stderr]   Downloaded ra_ap_la-arena v0.0.77
[INFO] [stderr]   Downloaded ra_ap_syntax v0.0.77
[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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 85b071d8ed3c1018987466976b99cdc903b6c51c9d1c32c44ebf616559c0eb46
[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" "85b071d8ed3c1018987466976b99cdc903b6c51c9d1c32c44ebf616559c0eb46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "85b071d8ed3c1018987466976b99cdc903b6c51c9d1c32c44ebf616559c0eb46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85b071d8ed3c1018987466976b99cdc903b6c51c9d1c32c44ebf616559c0eb46", kill_on_drop: false }`
[INFO] [stdout] 85b071d8ed3c1018987466976b99cdc903b6c51c9d1c32c44ebf616559c0eb46
[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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6fede8f44cec406afc56ce4e75dac1f46aa9408ec876b16525d7ca322856bd53
[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" "6fede8f44cec406afc56ce4e75dac1f46aa9408ec876b16525d7ca322856bd53", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling text-size v1.1.0
[INFO] [stderr]    Compiling drop_bomb v0.1.5
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling ra_ap_la-arena v0.0.77
[INFO] [stderr]    Compiling cov-mark v2.0.0-pre.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling ra_ap_parser v0.0.77
[INFO] [stderr]    Compiling rustc-ap-rustc_lexer v725.0.0
[INFO] [stderr]    Compiling ra_ap_text_edit v0.0.77
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling always-assert v0.1.2
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling perf-event-open-sys v1.0.1
[INFO] [stderr]    Compiling ra_ap_stdx v0.0.77
[INFO] [stderr]    Compiling dashmap v4.0.2
[INFO] [stderr]    Compiling perf-event v0.4.7
[INFO] [stderr]    Compiling countme v2.0.4
[INFO] [stderr]    Compiling rowan v0.14.1
[INFO] [stderr]    Compiling ra_ap_profile v0.0.77
[INFO] [stderr]    Compiling smol_str v0.1.21
[INFO] [stderr]    Compiling ra_ap_syntax v0.0.77
[INFO] [stderr]    Compiling rust-visitor v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.63s
[INFO] running `Command { std: "docker" "inspect" "6fede8f44cec406afc56ce4e75dac1f46aa9408ec876b16525d7ca322856bd53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fede8f44cec406afc56ce4e75dac1f46aa9408ec876b16525d7ca322856bd53", kill_on_drop: false }`
[INFO] [stdout] 6fede8f44cec406afc56ce4e75dac1f46aa9408ec876b16525d7ca322856bd53
[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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6b7f9c0a99af33d7369e2c04c91d6cc6699a10c04325d0337b281dc9d4ac9b4
[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" "f6b7f9c0a99af33d7369e2c04c91d6cc6699a10c04325d0337b281dc9d4ac9b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-visitor v0.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `Command { std: "docker" "inspect" "f6b7f9c0a99af33d7369e2c04c91d6cc6699a10c04325d0337b281dc9d4ac9b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6b7f9c0a99af33d7369e2c04c91d6cc6699a10c04325d0337b281dc9d4ac9b4", kill_on_drop: false }`
[INFO] [stdout] f6b7f9c0a99af33d7369e2c04c91d6cc6699a10c04325d0337b281dc9d4ac9b4
[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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 388cfe7d522b8da93d9314d415c9c4a9481bfdcc5252df4d3c103d39ccd10b98
[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" "388cfe7d522b8da93d9314d415c9c4a9481bfdcc5252df4d3c103d39ccd10b98", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_visitor-03be54979b09b826)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rust-visitor
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "388cfe7d522b8da93d9314d415c9c4a9481bfdcc5252df4d3c103d39ccd10b98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "388cfe7d522b8da93d9314d415c9c4a9481bfdcc5252df4d3c103d39ccd10b98", kill_on_drop: false }`
[INFO] [stdout] 388cfe7d522b8da93d9314d415c9c4a9481bfdcc5252df4d3c103d39ccd10b98