[INFO] updating cached repository https://github.com/signed/learning-rust
[INFO] running `"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"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7e4885a152c4205f8a4652866ca326025f44d62e
[INFO] testing signed/learning-rust against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsigned%2Flearning-rust" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/signed/learning-rust on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/signed/learning-rust
[INFO] finished tweaking git repo https://github.com/signed/learning-rust
[INFO] tweaked toml for git repo https://github.com/signed/learning-rust written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/signed/learning-rust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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=warn" "-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" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stdout] ecdd9883796154457585155042b397485ec356ab3e3b55a76ee2c2c926a3a02d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "ecdd9883796154457585155042b397485ec356ab3e3b55a76ee2c2c926a3a02d"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling pulldown-cmark v0.1.2
[INFO] [stderr]    Compiling bitflags v0.9.1
[INFO] [stderr]    Compiling learning_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `one`
[INFO] [stderr]   --> src/main.rs:30:32
[INFO] [stderr]    |
[INFO] [stderr] 30 |         Event::Start(Tag::Link(one, two)) => event,
[INFO] [stderr]    |                                ^^^ help: if this is intentional, prefix it with an underscore: `_one`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `two`
[INFO] [stderr]   --> src/main.rs:30:37
[INFO] [stderr]    |
[INFO] [stderr] 30 |         Event::Start(Tag::Link(one, two)) => event,
[INFO] [stderr]    |                                     ^^^ help: if this is intentional, prefix it with an underscore: `_two`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `parser`
[INFO] [stderr]   --> src/main.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let parser = parser.map(|event| match event {
[INFO] [stderr]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser`
[INFO] [stderr] 
[INFO] [stderr] error[E0382]: use of moved value: `event`
[INFO] [stderr]   --> src/main.rs:30:46
[INFO] [stderr]    |
[INFO] [stderr] 30 |         Event::Start(Tag::Link(one, two)) => event,
[INFO] [stderr]    |                                     ---      ^^^^^ value used here after partial move
[INFO] [stderr]    |                                     |
[INFO] [stderr]    |                                     value moved here
[INFO] [stderr]    |
[INFO] [stderr]    = note: move occurs because value has type `std::borrow::Cow<'_, str>`, which does not implement the `Copy` trait
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0382`.
[INFO] [stderr] error: could not compile `learning_rust`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ecdd9883796154457585155042b397485ec356ab3e3b55a76ee2c2c926a3a02d"`
[INFO] running `"docker" "rm" "-f" "ecdd9883796154457585155042b397485ec356ab3e3b55a76ee2c2c926a3a02d"`
[INFO] [stdout] ecdd9883796154457585155042b397485ec356ab3e3b55a76ee2c2c926a3a02d