[INFO] fetching crate pair-utils 0.1.0...
[INFO] building pair-utils-0.1.0 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate pair-utils 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate pair-utils 0.1.0
[INFO] finished tweaking crates.io crate pair-utils 0.1.0
[INFO] tweaked toml for crates.io crate pair-utils 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pair-utils 0.1.0 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d7998316a0fcf8ea3655ebae0d473b81029b34a9e7bf1edd7fb471dc69e5ae67
[INFO] running `Command { std: "docker" "start" "-a" "d7998316a0fcf8ea3655ebae0d473b81029b34a9e7bf1edd7fb471dc69e5ae67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7998316a0fcf8ea3655ebae0d473b81029b34a9e7bf1edd7fb471dc69e5ae67", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7998316a0fcf8ea3655ebae0d473b81029b34a9e7bf1edd7fb471dc69e5ae67", kill_on_drop: false }`
[INFO] [stdout] d7998316a0fcf8ea3655ebae0d473b81029b34a9e7bf1edd7fb471dc69e5ae67
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bac16512ead3a0fa382605f020655fb9a0d5853b97705f32bb72f70600bf3508
[INFO] running `Command { std: "docker" "start" "-a" "bac16512ead3a0fa382605f020655fb9a0d5853b97705f32bb72f70600bf3508", kill_on_drop: false }`
[INFO] [stderr]    Compiling pair-utils v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/pair.rs:42:17
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn iter(&self) -> std::slice::Iter<T> {
[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] 42 |     pub fn iter(&self) -> std::slice::Iter<'_, T> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/pair.rs:46:21
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn iter_mut(&mut self) -> std::slice::IterMut<T> {
[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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn iter_mut(&mut self) -> std::slice::IterMut<'_, T> {
[INFO] [stdout]    |                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] running `Command { std: "docker" "inspect" "bac16512ead3a0fa382605f020655fb9a0d5853b97705f32bb72f70600bf3508", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bac16512ead3a0fa382605f020655fb9a0d5853b97705f32bb72f70600bf3508", kill_on_drop: false }`
[INFO] [stdout] bac16512ead3a0fa382605f020655fb9a0d5853b97705f32bb72f70600bf3508
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e121e144101f6a29b446d55bccd8caaf6180ed33cf078aa7d520b2280ecf5c47
[INFO] running `Command { std: "docker" "start" "-a" "e121e144101f6a29b446d55bccd8caaf6180ed33cf078aa7d520b2280ecf5c47", kill_on_drop: false }`
[INFO] [stderr]    Compiling pair-utils v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/pair.rs:42:17
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn iter(&self) -> std::slice::Iter<T> {
[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] 42 |     pub fn iter(&self) -> std::slice::Iter<'_, T> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/pair.rs:46:21
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn iter_mut(&mut self) -> std::slice::IterMut<T> {
[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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn iter_mut(&mut self) -> std::slice::IterMut<'_, T> {
[INFO] [stdout]    |                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/pair.rs:42:17
[INFO] [stdout]    |
[INFO] [stdout] 42 |     pub fn iter(&self) -> std::slice::Iter<T> {
[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] 42 |     pub fn iter(&self) -> std::slice::Iter<'_, T> {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/pair.rs:46:21
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn iter_mut(&mut self) -> std::slice::IterMut<T> {
[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] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn iter_mut(&mut self) -> std::slice::IterMut<'_, T> {
[INFO] [stdout]    |                                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `Command { std: "docker" "inspect" "e121e144101f6a29b446d55bccd8caaf6180ed33cf078aa7d520b2280ecf5c47", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e121e144101f6a29b446d55bccd8caaf6180ed33cf078aa7d520b2280ecf5c47", kill_on_drop: false }`
[INFO] [stdout] e121e144101f6a29b446d55bccd8caaf6180ed33cf078aa7d520b2280ecf5c47