[INFO] fetching crate treelike 0.2.0...
[INFO] checking treelike-0.2.0 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate treelike 0.2.0 into /workspace/builds/worker-64/source
[INFO] validating manifest of crates.io crate treelike 0.2.0 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate treelike 0.2.0
[INFO] finished tweaking crates.io crate treelike 0.2.0
[INFO] tweaked toml for crates.io crate treelike 0.2.0 written to /workspace/builds/worker-64/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9d7fd271c8730823b907a30c555b062a66dbdc6ada8d6f3d807fcbf8fd33d9e3
[INFO] running `Command { std: "docker" "start" "-a" "9d7fd271c8730823b907a30c555b062a66dbdc6ada8d6f3d807fcbf8fd33d9e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9d7fd271c8730823b907a30c555b062a66dbdc6ada8d6f3d807fcbf8fd33d9e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d7fd271c8730823b907a30c555b062a66dbdc6ada8d6f3d807fcbf8fd33d9e3", kill_on_drop: false }`
[INFO] [stdout] 9d7fd271c8730823b907a30c555b062a66dbdc6ada8d6f3d807fcbf8fd33d9e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c8a999eef99fe89316166964d936e397bf0043d5ff3e17fae74b7ee5e56b5a35
[INFO] running `Command { std: "docker" "start" "-a" "c8a999eef99fe89316166964d936e397bf0043d5ff3e17fae74b7ee5e56b5a35", kill_on_drop: false }`
[INFO] [stderr]     Checking treelike v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused closure that must be used
[INFO] [stdout]    --> src/treelike.rs:180:4
[INFO] [stdout]     |
[INFO] [stdout] 180 | /             callback_bft(
[INFO] [stdout] 181 | |                 self,
[INFO] [stdout] 182 | |                 |content| {
[INFO] [stdout] 183 | |                     count += 1;
[INFO] [stdout] ...   |
[INFO] [stdout] 188 | |                 0,
[INFO] [stdout] 189 | |             );
[INFO] [stdout]     | |______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: closures are lazy and do nothing unless called
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused closure that must be used
[INFO] [stdout]    --> src/treelike.rs:180:4
[INFO] [stdout]     |
[INFO] [stdout] 180 | /             callback_bft(
[INFO] [stdout] 181 | |                 self,
[INFO] [stdout] 182 | |                 |content| {
[INFO] [stdout] 183 | |                     count += 1;
[INFO] [stdout] ...   |
[INFO] [stdout] 188 | |                 0,
[INFO] [stdout] 189 | |             );
[INFO] [stdout]     | |______________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: closures are lazy and do nothing unless called
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "c8a999eef99fe89316166964d936e397bf0043d5ff3e17fae74b7ee5e56b5a35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8a999eef99fe89316166964d936e397bf0043d5ff3e17fae74b7ee5e56b5a35", kill_on_drop: false }`
[INFO] [stdout] c8a999eef99fe89316166964d936e397bf0043d5ff3e17fae74b7ee5e56b5a35