[INFO] cloning repository https://github.com/jam1garner/hex
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jam1garner/hex" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjam1garner%2Fhex", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjam1garner%2Fhex'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b326f5601ec4335bc727901d9120b42a5667cb0b
[INFO] checking jam1garner/hex against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjam1garner%2Fhex" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jam1garner/hex
[INFO] finished tweaking git repo https://github.com/jam1garner/hex
[INFO] tweaked toml for git repo https://github.com/jam1garner/hex written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jam1garner/hex on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jam1garner/hex already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded stderrlog v0.5.1
[INFO] [stderr]   Downloaded synstructure v0.12.5
[INFO] [stderr]   Downloaded object v0.25.3
[INFO] [stderr]   Downloaded backtrace v0.3.60
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dfd308c0ef424161679230dd48d3e6dcc70c1189ece5fbb5caac48a4369574e9
[INFO] running `Command { std: "docker" "start" "-a" "dfd308c0ef424161679230dd48d3e6dcc70c1189ece5fbb5caac48a4369574e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dfd308c0ef424161679230dd48d3e6dcc70c1189ece5fbb5caac48a4369574e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfd308c0ef424161679230dd48d3e6dcc70c1189ece5fbb5caac48a4369574e9", kill_on_drop: false }`
[INFO] [stdout] dfd308c0ef424161679230dd48d3e6dcc70c1189ece5fbb5caac48a4369574e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f195f7992fce12c828c31959719f7ec1e1e8fe3a37e1e7e74808ce649784e6f2
[INFO] running `Command { std: "docker" "start" "-a" "f195f7992fce12c828c31959719f7ec1e1e8fe3a37e1e7e74808ce649784e6f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking gimli v0.24.0
[INFO] [stderr]     Checking rustc-demangle v0.1.20
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking unicode-segmentation v1.8.0
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking object v0.25.3
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]     Checking dirs v3.0.2
[INFO] [stderr]     Checking termion v1.5.6
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking tui v0.15.0
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking stderrlog v0.5.1
[INFO] [stderr]     Checking addr2line v0.15.2
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking nail v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/file.rs:48:41
[INFO] [stdout]    |
[INFO] [stdout] 48 | ...                   .map(|byte| (match *byte {
[INFO] [stdout]    |                                   ^
[INFO] [stdout] ...
[INFO] [stdout] 51 | ...                   }))
[INFO] [stdout]    |                        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 48 ~                             .map(|byte| match *byte {
[INFO] [stdout] 49 |                                 0..=0x1F | 0x80..=0xA0 | 0x7F => ".".to_string(),
[INFO] [stdout] 50 |                                 _ => (*byte as char).to_string(),
[INFO] [stdout] 51 ~                             } )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]   --> src/file.rs:48:41
[INFO] [stdout]    |
[INFO] [stdout] 48 | ...                   .map(|byte| (match *byte {
[INFO] [stdout]    |                                   ^
[INFO] [stdout] ...
[INFO] [stdout] 51 | ...                   }))
[INFO] [stdout]    |                        ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 48 ~                             .map(|byte| match *byte {
[INFO] [stdout] 49 |                                 0..=0x1F | 0x80..=0xA0 | 0x7F => ".".to_string(),
[INFO] [stdout] 50 |                                 _ => (*byte as char).to_string(),
[INFO] [stdout] 51 ~                             } )
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.47s
[INFO] running `Command { std: "docker" "inspect" "f195f7992fce12c828c31959719f7ec1e1e8fe3a37e1e7e74808ce649784e6f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f195f7992fce12c828c31959719f7ec1e1e8fe3a37e1e7e74808ce649784e6f2", kill_on_drop: false }`
[INFO] [stdout] f195f7992fce12c828c31959719f7ec1e1e8fe3a37e1e7e74808ce649784e6f2