[INFO] cloning repository https://github.com/insomnimus/show-files
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/insomnimus/show-files" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finsomnimus%2Fshow-files", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finsomnimus%2Fshow-files'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3a6489d3f6dfb09d1a4d75abcf2fa1ade89e6102
[INFO] checking insomnimus/show-files against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finsomnimus%2Fshow-files" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/insomnimus/show-files on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/insomnimus/show-files
[INFO] finished tweaking git repo https://github.com/insomnimus/show-files
[INFO] tweaked toml for git repo https://github.com/insomnimus/show-files written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/insomnimus/show-files already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 78f17bc5b75d33eebbd3094739d8b94f1e36abb302fd06927b4f9d77a5a1cc26
[INFO] running `Command { std: "docker" "start" "-a" "78f17bc5b75d33eebbd3094739d8b94f1e36abb302fd06927b4f9d77a5a1cc26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78f17bc5b75d33eebbd3094739d8b94f1e36abb302fd06927b4f9d77a5a1cc26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78f17bc5b75d33eebbd3094739d8b94f1e36abb302fd06927b4f9d77a5a1cc26", kill_on_drop: false }`
[INFO] [stdout] 78f17bc5b75d33eebbd3094739d8b94f1e36abb302fd06927b4f9d77a5a1cc26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 796761e9f8029444858a42f58c9c6b3e3fa339f0a6dbe78cc9ba233e78744d3b
[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" "796761e9f8029444858a42f58c9c6b3e3fa339f0a6dbe78cc9ba233e78744d3b", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]     Checking clap v3.0.0-beta.2
[INFO] [stderr]     Checking show-files v0.6.5 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: use of unstable library feature 'iter_intersperse': recently added
[INFO] [stdout]   --> src/table.rs:24:41
[INFO] [stdout]    |
[INFO] [stdout] 24 |             let total_width: usize = cols.iter().intersperse(&min_spaces).sum();
[INFO] [stdout]    |                                                  ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #79524 <https://github.com/rust-lang/rust/issues/79524> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `show-files` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0658]: use of unstable library feature 'iter_intersperse': recently added
[INFO] [stdout]   --> src/table.rs:24:41
[INFO] [stdout]    |
[INFO] [stdout] 24 |             let total_width: usize = cols.iter().intersperse(&min_spaces).sum();
[INFO] [stdout]    |                                                  ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #79524 <https://github.com/rust-lang/rust/issues/79524> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/table.rs:107:23
[INFO] [stdout]     |
[INFO] [stdout] 107 |         assert_eq!(buf.push(items.remove(0)), None);
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             expected `&str`, found struct `String`
[INFO] [stdout]     |                             help: consider borrowing here: `&items.remove(0)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/table.rs:109:22
[INFO] [stdout]     |
[INFO] [stdout] 109 |     assert_eq!(buf.push("1".to_string()), Some("a  b  c".to_string()),);
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         expected `&str`, found struct `String`
[INFO] [stdout]     |                         help: consider borrowing here: `&"1".to_string()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/table.rs:111:19
[INFO] [stdout]     |
[INFO] [stdout] 111 |     assert!(buf.push("2".to_string()).is_none());
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      expected `&str`, found struct `String`
[INFO] [stdout]     |                      help: consider borrowing here: `&"2".to_string()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/table.rs:112:19
[INFO] [stdout]     |
[INFO] [stdout] 112 |     assert!(buf.push("3".to_string()).is_none());
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^
[INFO] [stdout]     |                      |
[INFO] [stdout]     |                      expected `&str`, found struct `String`
[INFO] [stdout]     |                      help: consider borrowing here: `&"3".to_string()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/table.rs:114:12
[INFO] [stdout]     |
[INFO] [stdout] 114 |         buf.push("pls work".to_string()),
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |                  |
[INFO] [stdout]     |                  expected `&str`, found struct `String`
[INFO] [stdout]     |                  help: consider borrowing here: `&"pls work".to_string()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "796761e9f8029444858a42f58c9c6b3e3fa339f0a6dbe78cc9ba233e78744d3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "796761e9f8029444858a42f58c9c6b3e3fa339f0a6dbe78cc9ba233e78744d3b", kill_on_drop: false }`
[INFO] [stdout] 796761e9f8029444858a42f58c9c6b3e3fa339f0a6dbe78cc9ba233e78744d3b
