[INFO] cloning repository https://github.com/garebareDA/koto
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/garebareDA/koto" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FgarebareDA%2Fkoto", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FgarebareDA%2Fkoto'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 649771e21fbdd7c0c9a6f60a937235d899c452b2
[INFO] checking garebareDA/koto against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FgarebareDA%2Fkoto" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/garebareDA/koto on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/garebareDA/koto
[INFO] finished tweaking git repo https://github.com/garebareDA/koto
[INFO] tweaked toml for git repo https://github.com/garebareDA/koto written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/garebareDA/koto already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c87793a7dfa4c7df8cded8666c3ece11a89388ccef5cd30adfa6459b403a6306
[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" "c87793a7dfa4c7df8cded8666c3ece11a89388ccef5cd30adfa6459b403a6306", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c87793a7dfa4c7df8cded8666c3ece11a89388ccef5cd30adfa6459b403a6306", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c87793a7dfa4c7df8cded8666c3ece11a89388ccef5cd30adfa6459b403a6306", kill_on_drop: false }`
[INFO] [stdout] c87793a7dfa4c7df8cded8666c3ece11a89388ccef5cd30adfa6459b403a6306
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e87e258c1c93b08c434ea3d6ca9f694dedcf4bf4b1e9a6c6a83f147f85124d62
[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" "e87e258c1c93b08c434ea3d6ca9f694dedcf4bf4b1e9a6c6a83f147f85124d62", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking regex-syntax v0.6.14
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking regex v1.3.4
[INFO] [stderr]     Checking koto v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/compiler/function.rs:398:15
[INFO] [stdout]     |
[INFO] [stdout] 396 |               _param_types => {}
[INFO] [stdout]     |               ------------ matches any value
[INFO] [stdout] 397 | 
[INFO] [stdout] 398 |               _ => {
[INFO] [stdout]     |               ^ unreachable pattern
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `types` is never read
[INFO] [stdout]    --> src/compiler/function.rs:452:13
[INFO] [stdout]     |
[INFO] [stdout] 452 |     let mut types:Option<asts::VariableTypes> = None;
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `funs`
[INFO] [stdout]   --> src/compiler/arithmetic.rs:78:29
[INFO] [stdout]    |
[INFO] [stdout] 78 |       asts::Types::Function(funs) => {
[INFO] [stdout]    |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_funs`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/compiler/function.rs:398:15
[INFO] [stdout]     |
[INFO] [stdout] 396 |               _param_types => {}
[INFO] [stdout]     |               ------------ matches any value
[INFO] [stdout] 397 | 
[INFO] [stdout] 398 |               _ => {
[INFO] [stdout]     |               ^ unreachable pattern
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `types` is never read
[INFO] [stdout]    --> src/compiler/function.rs:452:13
[INFO] [stdout]     |
[INFO] [stdout] 452 |     let mut types:Option<asts::VariableTypes> = None;
[INFO] [stdout]     |             ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `funs`
[INFO] [stdout]   --> src/compiler/arithmetic.rs:78:29
[INFO] [stdout]    |
[INFO] [stdout] 78 |       asts::Types::Function(funs) => {
[INFO] [stdout]    |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_funs`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.35s
[INFO] running `Command { std: "docker" "inspect" "e87e258c1c93b08c434ea3d6ca9f694dedcf4bf4b1e9a6c6a83f147f85124d62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e87e258c1c93b08c434ea3d6ca9f694dedcf4bf4b1e9a6c6a83f147f85124d62", kill_on_drop: false }`
[INFO] [stdout] e87e258c1c93b08c434ea3d6ca9f694dedcf4bf4b1e9a6c6a83f147f85124d62