[INFO] cloning repository https://github.com/mcclure/rovr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mcclure/rovr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcclure%2Frovr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcclure%2Frovr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 67c4b854138fb0f6e86c6284268be0f08d872cbb
[INFO] checking mcclure/rovr against master#a836d9b6413d9d593be6c09463ff8c4c70e56599 for pr-84037
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcclure%2Frovr" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mcclure/rovr on toolchain a836d9b6413d9d593be6c09463ff8c4c70e56599
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mcclure/rovr
[INFO] finished tweaking git repo https://github.com/mcclure/rovr
[INFO] tweaked toml for git repo https://github.com/mcclure/rovr written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/mcclure/rovr already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.features
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--no-deps" "--format-version=1", 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] ad02d34b02d9b496fbb008797a393a2ba3b299623610ff389b1d1eb96638a68c
[INFO] running `Command { std: "docker" "start" "-a" "ad02d34b02d9b496fbb008797a393a2ba3b299623610ff389b1d1eb96638a68c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad02d34b02d9b496fbb008797a393a2ba3b299623610ff389b1d1eb96638a68c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad02d34b02d9b496fbb008797a393a2ba3b299623610ff389b1d1eb96638a68c", kill_on_drop: false }`
[INFO] [stdout] ad02d34b02d9b496fbb008797a393a2ba3b299623610ff389b1d1eb96638a68c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c9522a295184366183e9eb3b2846485c8383712c4c08e7631ad7aeefd0100f9
[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" "9c9522a295184366183e9eb3b2846485c8383712c4c08e7631ad7aeefd0100f9", kill_on_drop: false }`
[INFO] [stderr] warning: unused manifest key: package.features
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling lua-src v542.0.0
[INFO] [stderr]    Compiling luajit-src v210.1.2+resty29a66f7
[INFO] [stderr]     Checking bstr v0.2.15
[INFO] [stderr]    Compiling mlua v0.5.1
[INFO] [stderr]     Checking rovr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `extension`
[INFO] [stdout]   --> src/api/filesystem.rs:38:6
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let extension = if (cfg!(target_os = "windows")) { ".dll" } else { ".so" };
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_extension`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_nonfatal`
[INFO] [stdout]   --> src/api/mod.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn print_nonfatal(result: core::Result<()>) -> LuaResult<bool> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `forgive_nonfatal`
[INFO] [stdout]   --> src/core/mod.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub fn forgive_nonfatal(result: Result<()>) -> Result<bool> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `extension`
[INFO] [stdout]   --> src/api/filesystem.rs:38:6
[INFO] [stdout]    |
[INFO] [stdout] 38 |     let extension = if (cfg!(target_os = "windows")) { ".dll" } else { ".so" };
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_extension`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_nonfatal`
[INFO] [stdout]   --> src/api/mod.rs:37:8
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub fn print_nonfatal(result: core::Result<()>) -> LuaResult<bool> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `forgive_nonfatal`
[INFO] [stdout]   --> src/core/mod.rs:44:8
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub fn forgive_nonfatal(result: Result<()>) -> Result<bool> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 40.38s
[INFO] running `Command { std: "docker" "inspect" "9c9522a295184366183e9eb3b2846485c8383712c4c08e7631ad7aeefd0100f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c9522a295184366183e9eb3b2846485c8383712c4c08e7631ad7aeefd0100f9", kill_on_drop: false }`
[INFO] [stdout] 9c9522a295184366183e9eb3b2846485c8383712c4c08e7631ad7aeefd0100f9