[INFO] fetching crate iterators_extended 0.2.0...
[INFO] checking iterators_extended-0.2.0 against master#507271bc119683008ec719ecee48814e8ac86c65 for pr-146440
[INFO] extracting crate iterators_extended 0.2.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate iterators_extended 0.2.0
[INFO] finished tweaking crates.io crate iterators_extended 0.2.0
[INFO] tweaked toml for crates.io crate iterators_extended 0.2.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate iterators_extended 0.2.0 on toolchain 507271bc119683008ec719ecee48814e8ac86c65
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate iterators_extended 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0bf172e79ecdc43267417f9287210c92a209c415c76a0e6b99f1f74d77b621da
[INFO] running `Command { std: "docker" "start" "-a" "0bf172e79ecdc43267417f9287210c92a209c415c76a0e6b99f1f74d77b621da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0bf172e79ecdc43267417f9287210c92a209c415c76a0e6b99f1f74d77b621da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bf172e79ecdc43267417f9287210c92a209c415c76a0e6b99f1f74d77b621da", kill_on_drop: false }`
[INFO] [stdout] 0bf172e79ecdc43267417f9287210c92a209c415c76a0e6b99f1f74d77b621da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+507271bc119683008ec719ecee48814e8ac86c65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 320385a1debcaf42bb7eabed7408f4aeb41a87fe0c9221163f04c4bde1f26083
[INFO] running `Command { std: "docker" "start" "-a" "320385a1debcaf42bb7eabed7408f4aeb41a87fe0c9221163f04c4bde1f26083", kill_on_drop: false }`
[INFO] [stderr]     Checking iterators_extended v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `InterleaveIterator` is never constructed
[INFO] [stdout]  --> src/interleave.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct InterleaveIterator<I, J> {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IntoInterleaveIterator` is never used
[INFO] [stdout]   --> src/interleave.rs:27:7
[INFO] [stdout]    |
[INFO] [stdout] 27 | trait IntoInterleaveIterator: IntoIterator {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IntoLoggingIterator` is never used
[INFO] [stdout]   --> src/logging.rs:22:7
[INFO] [stdout]    |
[INFO] [stdout] 22 | trait IntoLoggingIterator {
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `mapped`
[INFO] [stdout]    --> src/stateful_threaded.rs:203:13
[INFO] [stdout]     |
[INFO] [stdout] 203 |         let mapped = values
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_mapped`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "320385a1debcaf42bb7eabed7408f4aeb41a87fe0c9221163f04c4bde1f26083", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "320385a1debcaf42bb7eabed7408f4aeb41a87fe0c9221163f04c4bde1f26083", kill_on_drop: false }`
[INFO] [stdout] 320385a1debcaf42bb7eabed7408f4aeb41a87fe0c9221163f04c4bde1f26083
