[INFO] cloning repository https://github.com/jedahan/weird-echo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jedahan/weird-echo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjedahan%2Fweird-echo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjedahan%2Fweird-echo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a472ce1c9300414f62449940153e5a7c42ceef7f
[INFO] testing jedahan/weird-echo against master#ebf0cf75d368c035f4c7e7246d203bd469ee4a51 for pr-137940
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjedahan%2Fweird-echo" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jedahan/weird-echo on toolchain ebf0cf75d368c035f4c7e7246d203bd469ee4a51
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jedahan/weird-echo
[INFO] finished tweaking git repo https://github.com/jedahan/weird-echo
[INFO] tweaked toml for git repo https://github.com/jedahan/weird-echo written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/jedahan/weird-echo 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" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 27510346f7a1541e5d547b3ad554a0a38982c463bac07648c97feb187475162b
[INFO] running `Command { std: "docker" "start" "-a" "27510346f7a1541e5d547b3ad554a0a38982c463bac07648c97feb187475162b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27510346f7a1541e5d547b3ad554a0a38982c463bac07648c97feb187475162b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27510346f7a1541e5d547b3ad554a0a38982c463bac07648c97feb187475162b", kill_on_drop: false }`
[INFO] [stdout] 27510346f7a1541e5d547b3ad554a0a38982c463bac07648c97feb187475162b
[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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+ebf0cf75d368c035f4c7e7246d203bd469ee4a51" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e973632300714186f3b551fa530792690d64f7acc55aa29ef0feb7647534692
[INFO] running `Command { std: "docker" "start" "-a" "6e973632300714186f3b551fa530792690d64f7acc55aa29ef0feb7647534692", kill_on_drop: false }`
[INFO] [stderr]    Compiling weird-echo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0716]: temporary value dropped while borrowed
[INFO] [stdout]   --> src/main.rs:9:7
[INFO] [stdout]    |
[INFO] [stdout] 8  |       let mut messages = if env::args().count() > 1 {
[INFO] [stdout]    |           ------------ borrow later stored here
[INFO] [stdout] 9  | /       env::args()
[INFO] [stdout] 10 | |         .skip(1)
[INFO] [stdout] 11 | |         .collect::<Vec<String>>()
[INFO] [stdout] 12 | |         .join(" ")
[INFO] [stdout]    | |__________________^ creates a temporary value which is freed while still in use
[INFO] [stdout] ...
[INFO] [stdout] 15 |       } else {
[INFO] [stdout]    |       - temporary value is freed at the end of this statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using a `let` binding to create a longer lived value
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0597]: `input` does not live long enough
[INFO] [stdout]   --> src/main.rs:38:41
[INFO] [stdout]    |
[INFO] [stdout] 22 |         while messages.iter().count() > 3 {
[INFO] [stdout]    |               -------- borrow later used here
[INFO] [stdout] ...
[INFO] [stdout] 35 |         let mut input = String::new();
[INFO] [stdout]    |             --------- binding `input` declared here
[INFO] [stdout] ...
[INFO] [stdout] 38 |             Ok(_) => messages.insert(0, &input),
[INFO] [stdout]    |                                         ^^^^^^ borrowed value does not live long enough
[INFO] [stdout] ...
[INFO] [stdout] 41 |     }
[INFO] [stdout]    |     - `input` dropped here while still borrowed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0597, E0716.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0597`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `weird-echo` (bin "weird-echo") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "6e973632300714186f3b551fa530792690d64f7acc55aa29ef0feb7647534692", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e973632300714186f3b551fa530792690d64f7acc55aa29ef0feb7647534692", kill_on_drop: false }`
[INFO] [stdout] 6e973632300714186f3b551fa530792690d64f7acc55aa29ef0feb7647534692