[INFO] cloning repository https://github.com/signed/learning-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/signed/learning-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsigned%2Flearning-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsigned%2Flearning-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7e4885a152c4205f8a4652866ca326025f44d62e
[INFO] checking signed/learning-rust against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsigned%2Flearning-rust" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/signed/learning-rust on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-1/source/Cargo.toml
[INFO] crate git repo https://github.com/signed/learning-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 141d9f09d266fc7b498a1b8dd8fc5c7e32ccbc2b393c222f141fcfb2cbe8f096
[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" "141d9f09d266fc7b498a1b8dd8fc5c7e32ccbc2b393c222f141fcfb2cbe8f096", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "141d9f09d266fc7b498a1b8dd8fc5c7e32ccbc2b393c222f141fcfb2cbe8f096", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "141d9f09d266fc7b498a1b8dd8fc5c7e32ccbc2b393c222f141fcfb2cbe8f096", kill_on_drop: false }`
[INFO] [stdout] 141d9f09d266fc7b498a1b8dd8fc5c7e32ccbc2b393c222f141fcfb2cbe8f096
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e8186e9d5fe34406a9edc6d744769528882635d421658365c6971ccd47a71c3
[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" "5e8186e9d5fe34406a9edc6d744769528882635d421658365c6971ccd47a71c3", kill_on_drop: false }`
[INFO] [stderr]     Checking pulldown-cmark v0.1.2
[INFO] [stderr]     Checking learning_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `one`
[INFO] [stdout]   --> src/main.rs:30:32
[INFO] [stdout]    |
[INFO] [stdout] 30 |         Event::Start(Tag::Link(one, two)) => event,
[INFO] [stdout]    |                                ^^^ help: if this is intentional, prefix it with an underscore: `_one`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `two`
[INFO] [stdout]   --> src/main.rs:30:37
[INFO] [stdout]    |
[INFO] [stdout] 30 |         Event::Start(Tag::Link(one, two)) => event,
[INFO] [stdout]    |                                     ^^^ help: if this is intentional, prefix it with an underscore: `_two`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parser`
[INFO] [stdout]   --> src/main.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let parser = parser.map(|event| match event {
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0382]: use of partially moved value: `event`
[INFO] [stdout]   --> src/main.rs:30:46
[INFO] [stdout]    |
[INFO] [stdout] 30 |         Event::Start(Tag::Link(one, two)) => event,
[INFO] [stdout]    |                                     ---      ^^^^^ value used here after partial move
[INFO] [stdout]    |                                     |
[INFO] [stdout]    |                                     value partially moved here
[INFO] [stdout]    |
[INFO] [stdout]    = note: partial move occurs because value has type `Cow<'_, str>`, which does not implement the `Copy` trait
[INFO] [stdout] help: borrow this field in the pattern to avoid moving `event.0.1`
[INFO] [stdout]    |
[INFO] [stdout] 30 |         Event::Start(Tag::Link(one, ref two)) => event,
[INFO] [stdout]    |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 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 `learning_rust`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `one`
[INFO] [stdout]   --> src/main.rs:30:32
[INFO] [stdout]    |
[INFO] [stdout] 30 |         Event::Start(Tag::Link(one, two)) => event,
[INFO] [stdout]    |                                ^^^ help: if this is intentional, prefix it with an underscore: `_one`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `two`
[INFO] [stdout]   --> src/main.rs:30:37
[INFO] [stdout]    |
[INFO] [stdout] 30 |         Event::Start(Tag::Link(one, two)) => event,
[INFO] [stdout]    |                                     ^^^ help: if this is intentional, prefix it with an underscore: `_two`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parser`
[INFO] [stdout]   --> src/main.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let parser = parser.map(|event| match event {
[INFO] [stdout]    |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_parser`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] [stdout] error[E0382]: use of partially moved value: `event`
[INFO] [stdout]   --> src/main.rs:30:46
[INFO] [stdout]    |
[INFO] [stdout] 30 |         Event::Start(Tag::Link(one, two)) => event,
[INFO] [stdout]    |                                     ---      ^^^^^ value used here after partial move
[INFO] [stdout]    |                                     |
[INFO] [stdout]    |                                     value partially moved here
[INFO] [stdout]    |
[INFO] [stdout]    = note: partial move occurs because value has type `Cow<'_, str>`, which does not implement the `Copy` trait
[INFO] [stdout] help: borrow this field in the pattern to avoid moving `event.0.1`
[INFO] [stdout]    |
[INFO] [stdout] 30 |         Event::Start(Tag::Link(one, ref two)) => event,
[INFO] [stdout]    |                                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0382`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5e8186e9d5fe34406a9edc6d744769528882635d421658365c6971ccd47a71c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e8186e9d5fe34406a9edc6d744769528882635d421658365c6971ccd47a71c3", kill_on_drop: false }`
[INFO] [stdout] 5e8186e9d5fe34406a9edc6d744769528882635d421658365c6971ccd47a71c3