[INFO] fetching crate a7f8c3dd72d00bf0e36cf490ea233da18c3d1399b676904cb6c3b37dd 0.0.1...
[INFO] checking a7f8c3dd72d00bf0e36cf490ea233da18c3d1399b676904cb6c3b37dd-0.0.1 against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] extracting crate a7f8c3dd72d00bf0e36cf490ea233da18c3d1399b676904cb6c3b37dd 0.0.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate a7f8c3dd72d00bf0e36cf490ea233da18c3d1399b676904cb6c3b37dd 0.0.1 on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate a7f8c3dd72d00bf0e36cf490ea233da18c3d1399b676904cb6c3b37dd 0.0.1
[INFO] finished tweaking crates.io crate a7f8c3dd72d00bf0e36cf490ea233da18c3d1399b676904cb6c3b37dd 0.0.1
[INFO] tweaked toml for crates.io crate a7f8c3dd72d00bf0e36cf490ea233da18c3d1399b676904cb6c3b37dd 0.0.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 193da05db1e0522dc9e82465b700c901beee87d8932153f4261308c6db8a855b
[INFO] running `Command { std: "docker" "start" "-a" "193da05db1e0522dc9e82465b700c901beee87d8932153f4261308c6db8a855b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "193da05db1e0522dc9e82465b700c901beee87d8932153f4261308c6db8a855b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "193da05db1e0522dc9e82465b700c901beee87d8932153f4261308c6db8a855b", kill_on_drop: false }`
[INFO] [stdout] 193da05db1e0522dc9e82465b700c901beee87d8932153f4261308c6db8a855b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bc6a01b353c4390652985b010567386db99dad5256450c051007d8feb18a180a
[INFO] running `Command { std: "docker" "start" "-a" "bc6a01b353c4390652985b010567386db99dad5256450c051007d8feb18a180a", kill_on_drop: false }`
[INFO] [stderr]     Checking a7f8c3dd72d00bf0e36cf490ea233da18c3d1399b676904cb6c3b37dd v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `indent`
[INFO] [stdout]  --> src/lib.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn dep_tree(indent: usize) {
[INFO] [stdout]   |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_indent`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `indent`
[INFO] [stdout]  --> src/lib.rs:1:17
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn dep_tree(indent: usize) {
[INFO] [stdout]   |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_indent`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "bc6a01b353c4390652985b010567386db99dad5256450c051007d8feb18a180a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc6a01b353c4390652985b010567386db99dad5256450c051007d8feb18a180a", kill_on_drop: false }`
[INFO] [stdout] bc6a01b353c4390652985b010567386db99dad5256450c051007d8feb18a180a