[INFO] cloning repository https://github.com/hexaredecimal/ML
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hexaredecimal/ML" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhexaredecimal%2FML", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhexaredecimal%2FML'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9392c72d521f6313cf02d18daea16dbf39acec63
[INFO] checking hexaredecimal/ML/9392c72d521f6313cf02d18daea16dbf39acec63 against master#a9e7b30487235621751cc628f170c0f15fb215c4 for pr-136539
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhexaredecimal%2FML" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hexaredecimal/ML on toolchain a9e7b30487235621751cc628f170c0f15fb215c4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a9e7b30487235621751cc628f170c0f15fb215c4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hexaredecimal/ML
[INFO] finished tweaking git repo https://github.com/hexaredecimal/ML
[INFO] tweaked toml for git repo https://github.com/hexaredecimal/ML written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/hexaredecimal/ML 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" "+a9e7b30487235621751cc628f170c0f15fb215c4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "50f167a7f4d109e603e4408578b1c8664d69239314aa81877fea196e4d5c461d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50f167a7f4d109e603e4408578b1c8664d69239314aa81877fea196e4d5c461d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50f167a7f4d109e603e4408578b1c8664d69239314aa81877fea196e4d5c461d", kill_on_drop: false }`
[INFO] [stdout] 50f167a7f4d109e603e4408578b1c8664d69239314aa81877fea196e4d5c461d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+a9e7b30487235621751cc628f170c0f15fb215c4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "c024b3a7a4ca082492b13bfa8981bd302711ca4a75abd4b537fa861984227119", kill_on_drop: false }`
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[INFO] [stdout] error[E0425]: cannot find function `enum_expression` in this scope
[INFO] [stdout]    --> src/parser/expression.rs:821:9
[INFO] [stdout]     |
[INFO] [stdout] 635 | pub fn cast_expression(i: &str) -> IResult<&str, RawNode, VerboseError<&str>> {
[INFO] [stdout]     | ----------------------------------------------------------------------------- similarly named function `cast_expression` defined here
[INFO] [stdout] ...
[INFO] [stdout] 821 |         enum_expression("Foo.Bar"),
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^ help: a function with a similar name exists: `cast_expression`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find function `enum_expression` in this scope
[INFO] [stdout]    --> src/parser/expression.rs:839:9
[INFO] [stdout]     |
[INFO] [stdout] 635 | pub fn cast_expression(i: &str) -> IResult<&str, RawNode, VerboseError<&str>> {
[INFO] [stdout]     | ----------------------------------------------------------------------------- similarly named function `cast_expression` defined here
[INFO] [stdout] ...
[INFO] [stdout] 839 |         enum_expression("Foo.Bar(0)"),
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^ help: a function with a similar name exists: `cast_expression`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/ir/sem.rs:659:34
[INFO] [stdout]     |
[INFO] [stdout] 659 |             SemExpression::Defer(expr) => {
[INFO] [stdout]     |                                  ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/ir/sem.rs:659:34
[INFO] [stdout]     |
[INFO] [stdout] 659 |             SemExpression::Defer(expr) => {
[INFO] [stdout]     |                                  ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `pkgname`, `pkgauthor`, and `pkgdesc` are never read
[INFO] [stdout]   --> src/manager.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Package {
[INFO] [stdout]    |        ------- fields in this struct
[INFO] [stdout] 18 |     pkgname: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 19 |     pkgauthor: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 20 |     pkgurl: String,
[INFO] [stdout] 21 |     pkgdesc: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Package` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]  --> src/error.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[derive(Debug, Error)]
[INFO] [stdout]   |                 ^----
[INFO] [stdout]   |                 |
[INFO] [stdout]   |                 `Error` is not local
[INFO] [stdout]   |                 move the `impl` block outside of this constant `_DERIVE_std_error_Error_FOR_CompilerError`
[INFO] [stdout] 7 | pub enum CompilerError {
[INFO] [stdout]   |          ------------- `CompilerError` is not local
[INFO] [stdout]   |
[INFO] [stdout]   = note: the derive macro `Error` defines the non-local `impl`, and may need to be changed
[INFO] [stdout]   = note: the derive macro `Error` may come from an old version of the `err_derive` crate, try updating your dependency with `cargo update -p err_derive`
[INFO] [stdout]   = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]   = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint
[INFO] [stdout]   = note: `#[warn(non_local_definitions)]` on by default
[INFO] [stdout]   = note: this warning originates in the derive macro `Error` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: non-local `impl` definition, `impl` blocks should be written at the same level as their item
[INFO] [stdout]  --> src/error.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[derive(Debug, Error)]
[INFO] [stdout]   |                 ^----
[INFO] [stdout]   |                 |
[INFO] [stdout]   |                 `Display` is not local
[INFO] [stdout]   |                 move the `impl` block outside of this constant `_DERIVE_core_fmt_Display_FOR_CompilerError`
[INFO] [stdout] 7 | pub enum CompilerError {
[INFO] [stdout]   |          ------------- `CompilerError` is not local
[INFO] [stdout]   |
[INFO] [stdout]   = note: the derive macro `Error` defines the non-local `impl`, and may need to be changed
[INFO] [stdout]   = note: the derive macro `Error` may come from an old version of the `err_derive` crate, try updating your dependency with `cargo update -p err_derive`
[INFO] [stdout]   = note: an `impl` is never scoped, even when it is nested inside an item, as it may impact type checking outside of that item, which can be the case if neither the trait or the self type are at the same nesting level as the `impl`
[INFO] [stdout]   = note: items in an anonymous const item (`const _: () = { ... }`) are treated as in the same scope as the anonymous const's declaration for the purpose of this lint
[INFO] [stdout]   = note: this warning originates in the derive macro `Error` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `small_ml` (lib test) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "c024b3a7a4ca082492b13bfa8981bd302711ca4a75abd4b537fa861984227119", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c024b3a7a4ca082492b13bfa8981bd302711ca4a75abd4b537fa861984227119", kill_on_drop: false }`
[INFO] [stdout] c024b3a7a4ca082492b13bfa8981bd302711ca4a75abd4b537fa861984227119