[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 master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FgarebareDA%2Fkoto" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/garebareDA/koto on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", 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-6/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" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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] ecf8bea346b70d400fe7f17c5a038d2c69508e2acf81a57f6d585cf0a8d8df50
[INFO] running `Command { std: "docker" "start" "-a" "ecf8bea346b70d400fe7f17c5a038d2c69508e2acf81a57f6d585cf0a8d8df50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ecf8bea346b70d400fe7f17c5a038d2c69508e2acf81a57f6d585cf0a8d8df50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ecf8bea346b70d400fe7f17c5a038d2c69508e2acf81a57f6d585cf0a8d8df50", kill_on_drop: false }`
[INFO] [stdout] ecf8bea346b70d400fe7f17c5a038d2c69508e2acf81a57f6d585cf0a8d8df50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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] 7711bea218b6708549f32f1cb10ab0858ede5bb4e4cc7bedbe93d280cc41b6e7
[INFO] running `Command { std: "docker" "start" "-a" "7711bea218b6708549f32f1cb10ab0858ede5bb4e4cc7bedbe93d280cc41b6e7", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.7.8
[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:452:9
[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: 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:452:9
[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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.08s
[INFO] running `Command { std: "docker" "inspect" "7711bea218b6708549f32f1cb10ab0858ede5bb4e4cc7bedbe93d280cc41b6e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7711bea218b6708549f32f1cb10ab0858ede5bb4e4cc7bedbe93d280cc41b6e7", kill_on_drop: false }`
[INFO] [stdout] 7711bea218b6708549f32f1cb10ab0858ede5bb4e4cc7bedbe93d280cc41b6e7