[INFO] cloning repository https://github.com/Keverne/md-prep-test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Keverne/md-prep-test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKeverne%2Fmd-prep-test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKeverne%2Fmd-prep-test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 69cb077bc78367a5372ae4cb48a91b3c64ab2f41
[INFO] checking Keverne/md-prep-test against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKeverne%2Fmd-prep-test" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Keverne/md-prep-test on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Keverne/md-prep-test
[INFO] finished tweaking git repo https://github.com/Keverne/md-prep-test
[INFO] tweaked toml for git repo https://github.com/Keverne/md-prep-test written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/Keverne/md-prep-test already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fb4cc492d1988b887ad2ac619cb3109805dfa036520fe93edbd6eb8ae082d8b3
[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" "fb4cc492d1988b887ad2ac619cb3109805dfa036520fe93edbd6eb8ae082d8b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb4cc492d1988b887ad2ac619cb3109805dfa036520fe93edbd6eb8ae082d8b3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb4cc492d1988b887ad2ac619cb3109805dfa036520fe93edbd6eb8ae082d8b3", kill_on_drop: false }`
[INFO] [stdout] fb4cc492d1988b887ad2ac619cb3109805dfa036520fe93edbd6eb8ae082d8b3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "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] b94704c0d7c759afd6f02ad9d696652b8bbb1d1a53f1abb85c6f027b5952b0f8
[INFO] running `Command { std: "docker" "start" "-a" "b94704c0d7c759afd6f02ad9d696652b8bbb1d1a53f1abb85c6f027b5952b0f8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking md-prep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `minim_output`
[INFO] [stdout]   --> src/main.rs:31:25
[INFO] [stdout]    |
[INFO] [stdout] 31 |             if let Some(minim_output) = minimization.stdout.take() {
[INFO] [stdout]    |                         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_minim_output`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `heat_output`
[INFO] [stdout]   --> src/main.rs:55:29
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 if let Some(heat_output) = first_heat.stdout.take() {
[INFO] [stdout]    |                             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_heat_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `heat_output`
[INFO] [stdout]   --> src/main.rs:79:33
[INFO] [stdout]    |
[INFO] [stdout] 79 |                     if let Some(heat_output) = first_heat.stdout.take() {
[INFO] [stdout]    |                                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_heat_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `minim_output`
[INFO] [stdout]   --> src/main.rs:31:25
[INFO] [stdout]    |
[INFO] [stdout] 31 |             if let Some(minim_output) = minimization.stdout.take() {
[INFO] [stdout]    |                         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_minim_output`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `heat_output`
[INFO] [stdout]   --> src/main.rs:55:29
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 if let Some(heat_output) = first_heat.stdout.take() {
[INFO] [stdout]    |                             ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_heat_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `heat_output`
[INFO] [stdout]   --> src/main.rs:79:33
[INFO] [stdout]    |
[INFO] [stdout] 79 |                     if let Some(heat_output) = first_heat.stdout.take() {
[INFO] [stdout]    |                                 ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_heat_output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.01s
[INFO] running `Command { std: "docker" "inspect" "b94704c0d7c759afd6f02ad9d696652b8bbb1d1a53f1abb85c6f027b5952b0f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b94704c0d7c759afd6f02ad9d696652b8bbb1d1a53f1abb85c6f027b5952b0f8", kill_on_drop: false }`
[INFO] [stdout] b94704c0d7c759afd6f02ad9d696652b8bbb1d1a53f1abb85c6f027b5952b0f8