[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#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FgarebareDA%2Fkoto" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[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-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/garebareDA/koto on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/garebareDA/koto already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 186b6620fe0b2e5f394deadca22837e662b45efdf9e4f4d2c526d1f60effbd1a
[INFO] running `Command { std: "docker" "start" "-a" "186b6620fe0b2e5f394deadca22837e662b45efdf9e4f4d2c526d1f60effbd1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "186b6620fe0b2e5f394deadca22837e662b45efdf9e4f4d2c526d1f60effbd1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "186b6620fe0b2e5f394deadca22837e662b45efdf9e4f4d2c526d1f60effbd1a", kill_on_drop: false }`
[INFO] [stdout] 186b6620fe0b2e5f394deadca22837e662b45efdf9e4f4d2c526d1f60effbd1a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 23fe5fe4d8dcd0f355723e868bdd730ebce69a344ada7cd8b727db73b1030f13
[INFO] running `Command { std: "docker" "start" "-a" "23fe5fe4d8dcd0f355723e868bdd730ebce69a344ada7cd8b727db73b1030f13", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]     Checking regex-syntax v0.6.14
[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]     |               ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: there is a binding of the same name; if you meant to pattern match against the value of that binding, that is a feature of constants that is not available for `let` bindings
[INFO] [stdout]    --> src/compiler/function.rs:391:11
[INFO] [stdout]     |
[INFO] [stdout] 391 |       let _param_types = &type_array[i];
[INFO] [stdout]     |           ^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` 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]     |               ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: there is a binding of the same name; if you meant to pattern match against the value of that binding, that is a feature of constants that is not available for `let` bindings
[INFO] [stdout]    --> src/compiler/function.rs:391:11
[INFO] [stdout]     |
[INFO] [stdout] 391 |       let _param_types = &type_array[i];
[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]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` 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]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[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: 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.36s
[INFO] running `Command { std: "docker" "inspect" "23fe5fe4d8dcd0f355723e868bdd730ebce69a344ada7cd8b727db73b1030f13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23fe5fe4d8dcd0f355723e868bdd730ebce69a344ada7cd8b727db73b1030f13", kill_on_drop: false }`
[INFO] [stdout] 23fe5fe4d8dcd0f355723e868bdd730ebce69a344ada7cd8b727db73b1030f13