[INFO] updating cached repository https://github.com/levysj/zero_width
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 75f3904ef51824a116cd5347edaead08a6bc0ae8
[INFO] testing levysj/zero_width against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flevysj%2Fzero_width" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/levysj/zero_width on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/levysj/zero_width
[INFO] finished tweaking git repo https://github.com/levysj/zero_width
[INFO] tweaked toml for git repo https://github.com/levysj/zero_width written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/levysj/zero_width already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0114d14fc71c7b2cff454eb329f3ecfebe1da62453cd1c1229953aaefea3618d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0114d14fc71c7b2cff454eb329f3ecfebe1da62453cd1c1229953aaefea3618d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0114d14fc71c7b2cff454eb329f3ecfebe1da62453cd1c1229953aaefea3618d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0114d14fc71c7b2cff454eb329f3ecfebe1da62453cd1c1229953aaefea3618d", kill_on_drop: false }`
[INFO] [stdout] 0114d14fc71c7b2cff454eb329f3ecfebe1da62453cd1c1229953aaefea3618d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8124d75fba5889f1b646c372dd02b12756a815ef136f6edb07c9a48a710bb035
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8124d75fba5889f1b646c372dd02b12756a815ef136f6edb07c9a48a710bb035", kill_on_drop: false }`
[INFO] [stderr]    Compiling zero_width v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::sync::Mutex`
[INFO] [stdout]  --> src/lib.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::sync::Mutex;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/zero_width_fun.rs:55:45
[INFO] [stdout]    |
[INFO] [stdout] 55 |         Err(e) => Err(ZeroWidthError::new(e.description())),
[INFO] [stdout]    |                                             ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0382]: use of moved value: `ret`
[INFO] [stdout]   --> src/lib.rs:67:36
[INFO] [stdout]    |
[INFO] [stdout] 64 |     let mut ret: Vec<String> = Vec::new();
[INFO] [stdout]    |         ------- move occurs because `ret` has type `std::vec::Vec<std::string::String>`, which does not implement the `Copy` trait
[INFO] [stdout] ...
[INFO] [stdout] 67 |         let handle = thread::spawn(move || {
[INFO] [stdout]    |                                    ^^^^^^^ value moved into closure here, in previous iteration of loop
[INFO] [stdout] 68 |             match dembbed_zero_width(&String::from(line)) {
[INFO] [stdout] 69 |                 Ok(o) => ret.push(o),
[INFO] [stdout]    |                          --- use occurs due to use in closure
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0382`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `zero_width`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "8124d75fba5889f1b646c372dd02b12756a815ef136f6edb07c9a48a710bb035", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8124d75fba5889f1b646c372dd02b12756a815ef136f6edb07c9a48a710bb035", kill_on_drop: false }`
[INFO] [stdout] 8124d75fba5889f1b646c372dd02b12756a815ef136f6edb07c9a48a710bb035