[INFO] fetching crate grepox 0.2.9...
[INFO] testing grepox-0.2.9 against 1.60.0 for beta-1.61-1
[INFO] extracting crate grepox 0.2.9 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate grepox 0.2.9 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate grepox 0.2.9
[INFO] finished tweaking crates.io crate grepox 0.2.9
[INFO] tweaked toml for crates.io crate grepox 0.2.9 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate grepox 0.2.9 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded naive_opt v0.1.17
[INFO] [stderr]   Downloaded memx v0.1.20
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b648c6da24530fe28b7b22044641d366053bf5c883b50eb51244cd8cd2971b29
[INFO] running `Command { std: "docker" "start" "-a" "b648c6da24530fe28b7b22044641d366053bf5c883b50eb51244cd8cd2971b29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b648c6da24530fe28b7b22044641d366053bf5c883b50eb51244cd8cd2971b29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b648c6da24530fe28b7b22044641d366053bf5c883b50eb51244cd8cd2971b29", kill_on_drop: false }`
[INFO] [stdout] b648c6da24530fe28b7b22044641d366053bf5c883b50eb51244cd8cd2971b29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a8d204b2e39afd7d71e57e3044740b0e21457d97680235685dfa8c2be1a6e72b
[INFO] running `Command { std: "docker" "start" "-a" "a8d204b2e39afd7d71e57e3044740b0e21457d97680235685dfa8c2be1a6e72b", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver v1.0.7
[INFO] [stderr]    Compiling libc v0.2.121
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling memx v0.1.20
[INFO] [stderr]    Compiling naive_opt v0.1.17
[INFO] [stderr]    Compiling grepox v0.2.9 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0716]: temporary value dropped while borrowed
[INFO] [stdout]    --> src/main.rs:129:18
[INFO] [stdout]     |
[INFO] [stdout] 129 |     let stdout = std::io::stdout().lock();
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^       - temporary value is freed at the end of this statement
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  creates a temporary which is freed while still in use
[INFO] [stdout] 130 |     let mut writer = BufWriter::with_capacity(16384, stdout);
[INFO] [stdout]     |                                                      ------ borrow later used here
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using a `let` binding to create a longer lived value
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0716]: temporary value dropped while borrowed
[INFO] [stdout]    --> src/main.rs:139:29
[INFO] [stdout]     |
[INFO] [stdout] 139 |             let mut stdin = io::stdin().lock();
[INFO] [stdout]     |                             ^^^^^^^^^^^       - temporary value is freed at the end of this statement
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             creates a temporary which is freed while still in use
[INFO] [stdout] ...
[INFO] [stdout] 142 |             while let Ok(bytes) = stdin.read_line(&mut line) {
[INFO] [stdout]     |                                   -------------------------- borrow later used here
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using a `let` binding to create a longer lived value
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0716]: temporary value dropped while borrowed
[INFO] [stdout]    --> src/main.rs:226:29
[INFO] [stdout]     |
[INFO] [stdout] 226 |             let mut stdin = io::stdin().lock();
[INFO] [stdout]     |                             ^^^^^^^^^^^       - temporary value is freed at the end of this statement
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             creates a temporary which is freed while still in use
[INFO] [stdout] ...
[INFO] [stdout] 230 |             while let Ok(bytes) = stdin.read_line(&mut line) {
[INFO] [stdout]     |                                   -------------------------- borrow later used here
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using a `let` binding to create a longer lived value
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0716`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `grepox` due to 4 previous errors
[INFO] running `Command { std: "docker" "inspect" "a8d204b2e39afd7d71e57e3044740b0e21457d97680235685dfa8c2be1a6e72b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8d204b2e39afd7d71e57e3044740b0e21457d97680235685dfa8c2be1a6e72b", kill_on_drop: false }`
[INFO] [stdout] a8d204b2e39afd7d71e57e3044740b0e21457d97680235685dfa8c2be1a6e72b