[INFO] cloning repository https://github.com/rustkas/rust-101-impl
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rustkas/rust-101-impl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frustkas%2Frust-101-impl", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frustkas%2Frust-101-impl'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 613d00f4626de92ead3dc7534fc6f94a73e95cfb
[INFO] checking rustkas/rust-101-impl against try#4a04890980766cc79878135f5ade8c0c4321e943 for pr-65819
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frustkas%2Frust-101-impl" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rustkas/rust-101-impl on toolchain 4a04890980766cc79878135f5ade8c0c4321e943
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rustkas/rust-101-impl
[INFO] finished tweaking git repo https://github.com/rustkas/rust-101-impl
[INFO] tweaked toml for git repo https://github.com/rustkas/rust-101-impl written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/rustkas/rust-101-impl already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/jobserver:/tmp/crater-runner-fifo:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+4a04890980766cc79878135f5ade8c0c4321e943" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fea4ffc831fa1011a81bbdc7df176e37d1fc5c1832bd764d177d1c0881fd9c23
[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" "fea4ffc831fa1011a81bbdc7df176e37d1fc5c1832bd764d177d1c0881fd9c23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fea4ffc831fa1011a81bbdc7df176e37d1fc5c1832bd764d177d1c0881fd9c23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fea4ffc831fa1011a81bbdc7df176e37d1fc5c1832bd764d177d1c0881fd9c23", kill_on_drop: false }`
[INFO] [stdout] fea4ffc831fa1011a81bbdc7df176e37d1fc5c1832bd764d177d1c0881fd9c23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/jobserver:/tmp/crater-runner-fifo:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "RUSTUP_TOOLCHAIN=4a04890980766cc79878135f5ade8c0c4321e943" "-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:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/tmp/crater-runner-fifo/jobserver-crater-fwd" "/opt/rustwide/cargo-home/bin/cargo" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ebaa5d162b6b5042618108b7a81e60941e523e78b606e72ddb3f05013f414700
[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" "ebaa5d162b6b5042618108b7a81e60941e523e78b606e72ddb3f05013f414700", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-101 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `el`
[INFO] [stdout]   --> src/part0.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     for el in vec {
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_el`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/part0.rs:35:20
[INFO] [stdout]    |
[INFO] [stdout] 35 |             Number(n) => {
[INFO] [stdout]    |                    ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/part0.rs:70:28
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn print_number_or_nothing(n: NumberOrNothing) {
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/part0.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut min = Nothing;
[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: variant is never constructed: `Number`
[INFO] [stdout]   --> src/part0.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Number(i32),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `min_i32`
[INFO] [stdout]   --> src/part0.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn min_i32(a: i32, b: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `el`
[INFO] [stdout]   --> src/part0.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     for el in vec {
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_el`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/part0.rs:35:20
[INFO] [stdout]    |
[INFO] [stdout] 35 |             Number(n) => {
[INFO] [stdout]    |                    ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/part0.rs:70:28
[INFO] [stdout]    |
[INFO] [stdout] 70 | fn print_number_or_nothing(n: NumberOrNothing) {
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/part0.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let mut min = Nothing;
[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: variant is never constructed: `Number`
[INFO] [stdout]   --> src/part0.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Number(i32),
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `min_i32`
[INFO] [stdout]   --> src/part0.rs:45:4
[INFO] [stdout]    |
[INFO] [stdout] 45 | fn min_i32(a: i32, b: i32) -> i32 {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.18s
[INFO] running `Command { std: "docker" "inspect" "ebaa5d162b6b5042618108b7a81e60941e523e78b606e72ddb3f05013f414700", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebaa5d162b6b5042618108b7a81e60941e523e78b606e72ddb3f05013f414700", kill_on_drop: false }`
[INFO] [stdout] ebaa5d162b6b5042618108b7a81e60941e523e78b606e72ddb3f05013f414700