[INFO] cloning repository https://github.com/threedy-io/step-merger
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/threedy-io/step-merger" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthreedy-io%2Fstep-merger", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthreedy-io%2Fstep-merger'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ecf1a909f718882b35bafb049023feeff5c9096f
[INFO] checking threedy-io/step-merger against df1ae0f7dd168513de2d89beb2cb7a95d4fdc118 for pr-159343-retry
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthreedy-io%2Fstep-merger" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/threedy-io/step-merger
[INFO] finished tweaking git repo https://github.com/threedy-io/step-merger
[INFO] tweaked toml for git repo https://github.com/threedy-io/step-merger written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/threedy-io/step-merger on toolchain df1ae0f7dd168513de2d89beb2cb7a95d4fdc118
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+df1ae0f7dd168513de2d89beb2cb7a95d4fdc118" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/threedy-io/step-merger 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" "+df1ae0f7dd168513de2d89beb2cb7a95d4fdc118" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3d5ced03c013a94a2f102a4510f48a6e9184255caf5fd8244f58017bde7f5210" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] c872435ec61fefd91e07557ef6d26a149fe80bc1dd375ffa56c9a50b3bfb88e7
[INFO] running `Command { std: "docker" "start" "c872435ec61fefd91e07557ef6d26a149fe80bc1dd375ffa56c9a50b3bfb88e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c872435ec61fefd91e07557ef6d26a149fe80bc1dd375ffa56c9a50b3bfb88e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c872435ec61fefd91e07557ef6d26a149fe80bc1dd375ffa56c9a50b3bfb88e7" "/opt/rustwide/cargo-home/bin/cargo" "+df1ae0f7dd168513de2d89beb2cb7a95d4fdc118" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c872435ec61fefd91e07557ef6d26a149fe80bc1dd375ffa56c9a50b3bfb88e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "c872435ec61fefd91e07557ef6d26a149fe80bc1dd375ffa56c9a50b3bfb88e7" "/opt/rustwide/cargo-home/bin/cargo" "+df1ae0f7dd168513de2d89beb2cb7a95d4fdc118" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]    Compiling step-merger-cli v0.3.0 (/opt/rustwide/workdir/step-merger-cli)
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]    Compiling quote v1.0.36
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[INFO] [stderr]     Checking step-merger v0.3.0 (/opt/rustwide/workdir/step-merger)
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[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> step-merger/src/merge/buffered_iterator.rs:47:17
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn iter(&mut self) -> BufferedIteratorIter<Item, I> {
[INFO] [stdout]    |                 ^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn iter(&mut self) -> BufferedIteratorIter<'_, Item, I> {
[INFO] [stdout]    |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> step-merger/src/merge/buffered_iterator.rs:47:17
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn iter(&mut self) -> BufferedIteratorIter<Item, I> {
[INFO] [stdout]    |                 ^^^^^^^^^     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                 |
[INFO] [stdout]    |                 the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn iter(&mut self) -> BufferedIteratorIter<'_, Item, I> {
[INFO] [stdout]    |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 21.34s
[INFO] running `Command { std: "docker" "inspect" "c872435ec61fefd91e07557ef6d26a149fe80bc1dd375ffa56c9a50b3bfb88e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c872435ec61fefd91e07557ef6d26a149fe80bc1dd375ffa56c9a50b3bfb88e7", kill_on_drop: false }`
[INFO] [stdout] c872435ec61fefd91e07557ef6d26a149fe80bc1dd375ffa56c9a50b3bfb88e7