[INFO] cloning repository https://github.com/actuday6418/gremlin
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/actuday6418/gremlin" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Factuday6418%2Fgremlin", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Factuday6418%2Fgremlin'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5c75e923377d76d3dcb875927e5795b3b7e7dbfa
[INFO] checking actuday6418/gremlin against master#195ad4830e11a544391abe296b146450dea8411b for pr-82781
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Factuday6418%2Fgremlin" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/actuday6418/gremlin on toolchain 195ad4830e11a544391abe296b146450dea8411b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/actuday6418/gremlin
[INFO] finished tweaking git repo https://github.com/actuday6418/gremlin
[INFO] tweaked toml for git repo https://github.com/actuday6418/gremlin written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/actuday6418/gremlin already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 80c3ef816b5c303b66d025c57623220da3f9a5b29bfddd5610f9e639e019a92b
[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" "80c3ef816b5c303b66d025c57623220da3f9a5b29bfddd5610f9e639e019a92b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "80c3ef816b5c303b66d025c57623220da3f9a5b29bfddd5610f9e639e019a92b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80c3ef816b5c303b66d025c57623220da3f9a5b29bfddd5610f9e639e019a92b", kill_on_drop: false }`
[INFO] [stdout] 80c3ef816b5c303b66d025c57623220da3f9a5b29bfddd5610f9e639e019a92b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+195ad4830e11a544391abe296b146450dea8411b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 7a7d82f1129cc94977105c198dcf327269ba77adea46d5a80cc82efef57be810
[INFO] running `Command { std: "docker" "start" "-a" "7a7d82f1129cc94977105c198dcf327269ba77adea46d5a80cc82efef57be810", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.66
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking unicode-segmentation v1.7.1
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]     Checking tui v0.14.0
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking webpki v0.21.4
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking webpki-roots v0.21.0
[INFO] [stderr]     Checking rustls v0.19.0
[INFO] [stderr]     Checking gremlin v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Alignment`, `Block`, `BorderType`, `Borders`, `Color`, `Paragraph`, `Style`, `Wrap`, `text::Span`
[INFO] [stdout]  --> src/main.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 |     layout::{Alignment, Constraint, Layout, Direction},
[INFO] [stdout]   |              ^^^^^^^^^
[INFO] [stdout] 7 |     style::{Color, Style},
[INFO] [stdout]   |             ^^^^^  ^^^^^
[INFO] [stdout] 8 |     text::Span,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 9 |     widgets::{Block, BorderType, Borders, Paragraph, Wrap},
[INFO] [stdout]   |               ^^^^^  ^^^^^^^^^^  ^^^^^^^  ^^^^^^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BorderType`, `Color`, `Constraint`, `Layout`
[INFO] [stdout]  --> src/interface/ui.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 |     layout::{Alignment, Constraint, Layout},
[INFO] [stdout]   |                         ^^^^^^^^^^  ^^^^^^
[INFO] [stdout] 3 |     style::{Color, Style},
[INFO] [stdout]   |             ^^^^^
[INFO] [stdout] 4 |     text::Span,
[INFO] [stdout] 5 |     widgets::{Block, BorderType, Borders, Paragraph, Wrap},
[INFO] [stdout]   |                      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Alignment`, `Block`, `BorderType`, `Borders`, `Color`, `Paragraph`, `Style`, `Wrap`, `text::Span`
[INFO] [stdout]  --> src/main.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 |     layout::{Alignment, Constraint, Layout, Direction},
[INFO] [stdout]   |              ^^^^^^^^^
[INFO] [stdout] 7 |     style::{Color, Style},
[INFO] [stdout]   |             ^^^^^  ^^^^^
[INFO] [stdout] 8 |     text::Span,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout] 9 |     widgets::{Block, BorderType, Borders, Paragraph, Wrap},
[INFO] [stdout]   |               ^^^^^  ^^^^^^^^^^  ^^^^^^^  ^^^^^^^^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BorderType`, `Color`, `Constraint`, `Layout`
[INFO] [stdout]  --> src/interface/ui.rs:2:25
[INFO] [stdout]   |
[INFO] [stdout] 2 |     layout::{Alignment, Constraint, Layout},
[INFO] [stdout]   |                         ^^^^^^^^^^  ^^^^^^
[INFO] [stdout] 3 |     style::{Color, Style},
[INFO] [stdout]   |             ^^^^^
[INFO] [stdout] 4 |     text::Span,
[INFO] [stdout] 5 |     widgets::{Block, BorderType, Borders, Paragraph, Wrap},
[INFO] [stdout]   |                      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut line_count = content.as_bytes().iter().filter(|&&c| c == b'\n').count();
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `s_digit_code`
[INFO] [stdout]  --> src/networking/status.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     s_digit_code: u8,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `meta`
[INFO] [stdout]  --> src/networking/status.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     meta: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:18:9
[INFO] [stdout]    |
[INFO] [stdout] 18 |     let mut line_count = content.as_bytes().iter().filter(|&&c| c == b'\n').count();
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `s_digit_code`
[INFO] [stdout]  --> src/networking/status.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     s_digit_code: u8,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `meta`
[INFO] [stdout]  --> src/networking/status.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     meta: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.41s
[INFO] running `Command { std: "docker" "inspect" "7a7d82f1129cc94977105c198dcf327269ba77adea46d5a80cc82efef57be810", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a7d82f1129cc94977105c198dcf327269ba77adea46d5a80cc82efef57be810", kill_on_drop: false }`
[INFO] [stdout] 7a7d82f1129cc94977105c198dcf327269ba77adea46d5a80cc82efef57be810