[INFO] cloning repository https://github.com/cdreamer1/hello_world
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cdreamer1/hello_world" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdreamer1%2Fhello_world", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdreamer1%2Fhello_world'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 34e6cd9839f9d6e10df9659bad55c852f49394f3
[INFO] checking cdreamer1/hello_world against master#ca77504943887037504c7fc0b9bf06dab3910373 for pr-145181
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcdreamer1%2Fhello_world" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/cdreamer1/hello_world
[INFO] finished tweaking git repo https://github.com/cdreamer1/hello_world
[INFO] tweaked toml for git repo https://github.com/cdreamer1/hello_world written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/cdreamer1/hello_world on toolchain ca77504943887037504c7fc0b9bf06dab3910373
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ca77504943887037504c7fc0b9bf06dab3910373" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/cdreamer1/hello_world 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" "+ca77504943887037504c7fc0b9bf06dab3910373" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:ae6f63d130afcfff7f91f5ba9fdb2a74d52830289c6a2ea2d23a94dcfb480a0d" "/opt/rustwide/cargo-home/bin/cargo" "+ca77504943887037504c7fc0b9bf06dab3910373" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1509496884c079aa1103bda64e7af86ea1819622b4ad8c141814a120c6141f40
[INFO] running `Command { std: "docker" "start" "-a" "1509496884c079aa1103bda64e7af86ea1819622b4ad8c141814a120c6141f40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1509496884c079aa1103bda64e7af86ea1819622b4ad8c141814a120c6141f40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1509496884c079aa1103bda64e7af86ea1819622b4ad8c141814a120c6141f40", kill_on_drop: false }`
[INFO] [stdout] 1509496884c079aa1103bda64e7af86ea1819622b4ad8c141814a120c6141f40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:ae6f63d130afcfff7f91f5ba9fdb2a74d52830289c6a2ea2d23a94dcfb480a0d" "/opt/rustwide/cargo-home/bin/cargo" "+ca77504943887037504c7fc0b9bf06dab3910373" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e3a2b910a519fcab2f133a54953302765a68e026cf279e98852f4d6df6a4c8d
[INFO] running `Command { std: "docker" "start" "-a" "2e3a2b910a519fcab2f133a54953302765a68e026cf279e98852f4d6df6a4c8d", kill_on_drop: false }`
[INFO] [stderr]     Checking hello_world v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut v = vec![1, 2, 3, 4, 5];
[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 `0` is never read
[INFO] [stdout]  --> src/main.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Write(String),
[INFO] [stdout]   |     ----- ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 4 -     Write(String),
[INFO] [stdout] 4 +     Write(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Quit`, `Move`, and `ChangeColor` are never constructed
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Message {
[INFO] [stdout]   |      ------- variants in this enum
[INFO] [stdout] 2 |     Quit,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 3 |     Move { x: i32, y: i32 },
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 4 |     Write(String),
[INFO] [stdout] 5 |     ChangeColor(i32, i32, i32)
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut v = vec![1, 2, 3, 4, 5];
[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 `0` is never read
[INFO] [stdout]  --> src/main.rs:4:11
[INFO] [stdout]   |
[INFO] [stdout] 4 |     Write(String),
[INFO] [stdout]   |     ----- ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]   |
[INFO] [stdout] 4 -     Write(String),
[INFO] [stdout] 4 +     Write(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Quit`, `Move`, and `ChangeColor` are never constructed
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | enum Message {
[INFO] [stdout]   |      ------- variants in this enum
[INFO] [stdout] 2 |     Quit,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 3 |     Move { x: i32, y: i32 },
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 4 |     Write(String),
[INFO] [stdout] 5 |     ChangeColor(i32, i32, i32)
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "2e3a2b910a519fcab2f133a54953302765a68e026cf279e98852f4d6df6a4c8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e3a2b910a519fcab2f133a54953302765a68e026cf279e98852f4d6df6a4c8d", kill_on_drop: false }`
[INFO] [stdout] 2e3a2b910a519fcab2f133a54953302765a68e026cf279e98852f4d6df6a4c8d