[INFO] cloning repository https://github.com/Saljooq/grep1
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Saljooq/grep1" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSaljooq%2Fgrep1", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSaljooq%2Fgrep1'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 47bccec1b435edbf9f11da32eb854f5bdfeb0fa6
[INFO] checking Saljooq/grep1 against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSaljooq%2Fgrep1" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Saljooq/grep1
[INFO] finished tweaking git repo https://github.com/Saljooq/grep1
[INFO] tweaked toml for git repo https://github.com/Saljooq/grep1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Saljooq/grep1 on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Saljooq/grep1 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-file-unix v0.6.0
[INFO] [stderr]   Downloaded net2 v0.2.38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b30ca92493f35648923532b0a184126158b4b049691f2ef0f8f2963ffa8c72f8
[INFO] running `Command { std: "docker" "start" "-a" "b30ca92493f35648923532b0a184126158b4b049691f2ef0f8f2963ffa8c72f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b30ca92493f35648923532b0a184126158b4b049691f2ef0f8f2963ffa8c72f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b30ca92493f35648923532b0a184126158b4b049691f2ef0f8f2963ffa8c72f8", kill_on_drop: false }`
[INFO] [stdout] b30ca92493f35648923532b0a184126158b4b049691f2ef0f8f2963ffa8c72f8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b2bdbccf12ae32bd2e0831f5bff69a377fb8ef29d4698ce542cb161c3d5a6efc
[INFO] running `Command { std: "docker" "start" "-a" "b2bdbccf12ae32bd2e0831f5bff69a377fb8ef29d4698ce542cb161c3d5a6efc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.139
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking net2 v0.2.38
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking term_size v0.3.2
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking tokio-file-unix v0.6.0
[INFO] [stderr]     Checking grep1 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/child.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 drop(self.args);
[INFO] [stdout]    |                 ^^^^^---------^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      argument has type `&[&str]`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 37 -                 drop(self.args);
[INFO] [stdout] 37 +                 let _ = self.args;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/beautify.rs:101:27
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn limit_lines(lines: Lines) -> Vec<&str> {
[INFO] [stdout]     |                           ^^^^^         ^^^^ the same lifetime is elided here
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           the lifetime is hidden 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] 101 |     fn limit_lines(lines: Lines<'_>) -> Vec<&str> {
[INFO] [stdout]     |                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/child.rs:37:17
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 drop(self.args);
[INFO] [stdout]    |                 ^^^^^---------^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      argument has type `&[&str]`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 37 -                 drop(self.args);
[INFO] [stdout] 37 +                 let _ = self.args;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/beautify.rs:101:27
[INFO] [stdout]     |
[INFO] [stdout] 101 |     fn limit_lines(lines: Lines) -> Vec<&str> {
[INFO] [stdout]     |                           ^^^^^         ^^^^ the same lifetime is elided here
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           the lifetime is hidden 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] 101 |     fn limit_lines(lines: Lines<'_>) -> Vec<&str> {
[INFO] [stdout]     |                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.49s
[INFO] running `Command { std: "docker" "inspect" "b2bdbccf12ae32bd2e0831f5bff69a377fb8ef29d4698ce542cb161c3d5a6efc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b2bdbccf12ae32bd2e0831f5bff69a377fb8ef29d4698ce542cb161c3d5a6efc", kill_on_drop: false }`
[INFO] [stdout] b2bdbccf12ae32bd2e0831f5bff69a377fb8ef29d4698ce542cb161c3d5a6efc
