[INFO] fetching crate mailchecker 6.0.8...
[INFO] checking mailchecker-6.0.8 against master#5ad98b4026d5172f27615b105658bc8bfd677be8 for pr-129422
[INFO] extracting crate mailchecker 6.0.8 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate mailchecker 6.0.8 on toolchain 5ad98b4026d5172f27615b105658bc8bfd677be8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mailchecker 6.0.8
[INFO] finished tweaking crates.io crate mailchecker 6.0.8
[INFO] tweaked toml for crates.io crate mailchecker 6.0.8 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate mailchecker 6.0.8 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" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pretty_assertions v0.1.2
[INFO] [stderr]   Downloaded difference v1.0.0
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 69bca437d7a54afe679acd4bab286a67ead9033fb797565f4bd2499a358eb761
[INFO] running `Command { std: "docker" "start" "-a" "69bca437d7a54afe679acd4bab286a67ead9033fb797565f4bd2499a358eb761", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69bca437d7a54afe679acd4bab286a67ead9033fb797565f4bd2499a358eb761", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69bca437d7a54afe679acd4bab286a67ead9033fb797565f4bd2499a358eb761", kill_on_drop: false }`
[INFO] [stdout] 69bca437d7a54afe679acd4bab286a67ead9033fb797565f4bd2499a358eb761
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+5ad98b4026d5172f27615b105658bc8bfd677be8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60e53be248545bf73b1573d5faad3a1d973584705d3da119d7599588476c4ec0
[INFO] running `Command { std: "docker" "start" "-a" "60e53be248545bf73b1573d5faad3a1d973584705d3da119d7599588476c4ec0", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking ascii_utils v0.9.3
[INFO] [stderr]     Checking difference v1.0.0
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking pretty_assertions v0.1.2
[INFO] [stderr]     Checking fast_chemail v0.9.6
[INFO] [stderr]     Checking mailchecker v6.0.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `ExtendedIterator` is never used
[INFO] [stdout]    --> src/lib.rs:138:7
[INFO] [stdout]     |
[INFO] [stdout] 138 | trait ExtendedIterator: Iterator {
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/lib.rs:79:39
[INFO] [stdout]    |
[INFO] [stdout] 79 |     .fold(vec![String::from(domains[0].clone())], |v, domain_part| {
[INFO] [stdout]    |                                       ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `ExtendedIterator` is never used
[INFO] [stdout]    --> src/lib.rs:138:7
[INFO] [stdout]     |
[INFO] [stdout] 138 | trait ExtendedIterator: Iterator {
[INFO] [stdout]     |       ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/lib.rs:79:39
[INFO] [stdout]    |
[INFO] [stdout] 79 |     .fold(vec![String::from(domains[0].clone())], |v, domain_part| {
[INFO] [stdout]    |                                       ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Clone`, so calling `clone` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `Command { std: "docker" "inspect" "60e53be248545bf73b1573d5faad3a1d973584705d3da119d7599588476c4ec0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60e53be248545bf73b1573d5faad3a1d973584705d3da119d7599588476c4ec0", kill_on_drop: false }`
[INFO] [stdout] 60e53be248545bf73b1573d5faad3a1d973584705d3da119d7599588476c4ec0