[INFO] cloning repository https://github.com/gero0/match_examples
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gero0/match_examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgero0%2Fmatch_examples", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgero0%2Fmatch_examples'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 50b1f2aaea819b0897ff1e8c00ef62b09420b8d4
[INFO] checking gero0/match_examples against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgero0%2Fmatch_examples" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gero0/match_examples on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gero0/match_examples
[INFO] finished tweaking git repo https://github.com/gero0/match_examples
[INFO] tweaked toml for git repo https://github.com/gero0/match_examples written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/gero0/match_examples already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2fb9b76981fcff093f46049699990cee757e57e9e344dd40b04b0aeb9e4fd435
[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" "2fb9b76981fcff093f46049699990cee757e57e9e344dd40b04b0aeb9e4fd435", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2fb9b76981fcff093f46049699990cee757e57e9e344dd40b04b0aeb9e4fd435", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fb9b76981fcff093f46049699990cee757e57e9e344dd40b04b0aeb9e4fd435", kill_on_drop: false }`
[INFO] [stdout] 2fb9b76981fcff093f46049699990cee757e57e9e344dd40b04b0aeb9e4fd435
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dacd4184439789f1305a3d2bfafb49e37acc6619b7a77c1f604ed679b0af8fb2
[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" "dacd4184439789f1305a3d2bfafb49e37acc6619b7a77c1f604ed679b0af8fb2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking match_examples v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `command`
[INFO] [stdout]   --> examples/enums.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn execute(command: Command) {
[INFO] [stdout]    |            ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_command`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Pixel`
[INFO] [stdout]  --> examples/enums.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | struct Pixel {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Command`
[INFO] [stdout]  --> examples/enums.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum Command {
[INFO] [stdout]   |      ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `execute`
[INFO] [stdout]   --> examples/enums.rs:12:4
[INFO] [stdout]    |
[INFO] [stdout] 12 | fn execute(command: Command) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> examples/basics.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |         (0, y) => println!("The first element is 0"),
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> examples/basics.rs:34:10
[INFO] [stdout]    |
[INFO] [stdout] 34 |         (x, 0) => println!("The second element is 0"),
[INFO] [stdout]    |          ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `drinking`
[INFO] [stdout]   --> examples/basics.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn drinking(age: u32) {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `conditions`
[INFO] [stdout]   --> examples/basics.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn conditions(n: u32) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `check_tuple`
[INFO] [stdout]   --> examples/basics.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn check_tuple(tuple: (u32, u32)) {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `Command { std: "docker" "inspect" "dacd4184439789f1305a3d2bfafb49e37acc6619b7a77c1f604ed679b0af8fb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dacd4184439789f1305a3d2bfafb49e37acc6619b7a77c1f604ed679b0af8fb2", kill_on_drop: false }`
[INFO] [stdout] dacd4184439789f1305a3d2bfafb49e37acc6619b7a77c1f604ed679b0af8fb2