[INFO] updating cached repository https://github.com/ivoelbert/tigerust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7e5c9c03e7d2d2b8658072e104e263ab637fcca5
[INFO] checking ivoelbert/tigerust against master#b1f395de642e8be7bcbbd2bd8aaadab715851f49 for pr-69410
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivoelbert%2Ftigerust" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ivoelbert/tigerust on toolchain b1f395de642e8be7bcbbd2bd8aaadab715851f49
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b1f395de642e8be7bcbbd2bd8aaadab715851f49" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ivoelbert/tigerust
[INFO] finished tweaking git repo https://github.com/ivoelbert/tigerust
[INFO] tweaked toml for git repo https://github.com/ivoelbert/tigerust written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/ivoelbert/tigerust already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+b1f395de642e8be7bcbbd2bd8aaadab715851f49" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+b1f395de642e8be7bcbbd2bd8aaadab715851f49" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1c2bfbff1a628144241771ebebc938126d7fb5cd321f12e347aa2277b6864cc0
[INFO] running `"docker" "start" "-a" "1c2bfbff1a628144241771ebebc938126d7fb5cd321f12e347aa2277b6864cc0"`
[INFO] [stderr]    Compiling serde v1.0.94
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.34
[INFO] [stderr]    Compiling wasm-bindgen v0.2.34
[INFO] [stderr]     Checking lalrpop-util v0.17.1
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]     Checking nanoid v0.2.0
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.2.34
[INFO] [stderr]     Checking pathfinding v1.1.12
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling digest v0.8.0
[INFO] [stderr]    Compiling sha2 v0.8.0
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.34
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.34
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.34
[INFO] [stderr]     Checking serde_json v1.0.42
[INFO] [stderr]     Checking snowflake v1.3.0
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling lalrpop v0.17.1
[INFO] [stderr]     Checking js-sys v0.3.11
[INFO] [stderr]     Checking console_error_panic_hook v0.1.5
[INFO] [stderr]     Checking wasm-bindgen-futures v0.3.11
[INFO] [stderr]     Checking wasm-bindgen-test v0.2.34
[INFO] [stderr]    Compiling tigerust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:3851:5
[INFO] [stderr]      |
[INFO] [stderr] 3851 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:3919:5
[INFO] [stderr]      |
[INFO] [stderr] 3919 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:3968:5
[INFO] [stderr]      |
[INFO] [stderr] 3968 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:3989:5
[INFO] [stderr]      |
[INFO] [stderr] 3989 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4018:5
[INFO] [stderr]      |
[INFO] [stderr] 4018 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4044:5
[INFO] [stderr]      |
[INFO] [stderr] 4044 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4072:5
[INFO] [stderr]      |
[INFO] [stderr] 4072 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4114:5
[INFO] [stderr]      |
[INFO] [stderr] 4114 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4135:5
[INFO] [stderr]      |
[INFO] [stderr] 4135 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4204:5
[INFO] [stderr]      |
[INFO] [stderr] 4204 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4241:5
[INFO] [stderr]      |
[INFO] [stderr] 4241 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4278:5
[INFO] [stderr]      |
[INFO] [stderr] 4278 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4434:5
[INFO] [stderr]      |
[INFO] [stderr] 4434 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4459:5
[INFO] [stderr]      |
[INFO] [stderr] 4459 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4640:5
[INFO] [stderr]      |
[INFO] [stderr] 4640 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4648:5
[INFO] [stderr]      |
[INFO] [stderr] 4648 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::utils::log`
[INFO] [stderr]  --> src/typecheck/mod.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use crate::utils::log;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/typecheck/letexp.rs:283:55
[INFO] [stderr]     |
[INFO] [stderr] 283 |     fn sort_decs(decs: &[(_TypeDec, Pos)], order: Vec<(Symbol)>, record_names: Vec<(Symbol)>) -> (Vec<&(_TypeDec, Pos)>, Vec<&(_TypeDec, Pos)>) {
[INFO] [stderr]     |                                                       ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/typecheck/letexp.rs:283:84
[INFO] [stderr]     |
[INFO] [stderr] 283 |     fn sort_decs(decs: &[(_TypeDec, Pos)], order: Vec<(Symbol)>, record_names: Vec<(Symbol)>) -> (Vec<&(_TypeDec, Pos)>, Vec<&(_TypeDec, Pos)>) {
[INFO] [stderr]     |                                                                                    ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::utils::log`
[INFO] [stderr]  --> src/tree/escape.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::utils::log;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::utils::log`
[INFO] [stderr]  --> src/tree/translate/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::utils::log;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::utils::log`
[INFO] [stderr]  --> src/tree/translate/callexp.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::utils::log;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/tree/translate/mod.rs:94:38
[INFO] [stderr]    |
[INFO] [stderr] 94 | pub fn translate(exp: AST) -> Result<(Vec<Fragment>), TransError> {
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::utils::log`
[INFO] [stderr]   --> src/tree/level.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use crate::utils::log;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:3851:5
[INFO] [stderr]      |
[INFO] [stderr] 3851 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:3919:5
[INFO] [stderr]      |
[INFO] [stderr] 3919 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:3968:5
[INFO] [stderr]      |
[INFO] [stderr] 3968 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:3989:5
[INFO] [stderr]      |
[INFO] [stderr] 3989 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4018:5
[INFO] [stderr]      |
[INFO] [stderr] 4018 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4044:5
[INFO] [stderr]      |
[INFO] [stderr] 4044 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4072:5
[INFO] [stderr]      |
[INFO] [stderr] 4072 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4114:5
[INFO] [stderr]      |
[INFO] [stderr] 4114 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4135:5
[INFO] [stderr]      |
[INFO] [stderr] 4135 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4204:5
[INFO] [stderr]      |
[INFO] [stderr] 4204 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4241:5
[INFO] [stderr]      |
[INFO] [stderr] 4241 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4278:5
[INFO] [stderr]      |
[INFO] [stderr] 4278 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4434:5
[INFO] [stderr]      |
[INFO] [stderr] 4434 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4459:5
[INFO] [stderr]      |
[INFO] [stderr] 4459 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4640:5
[INFO] [stderr]      |
[INFO] [stderr] 4640 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-336aed0d22fbbdfb/out/parser.rs:4648:5
[INFO] [stderr]      |
[INFO] [stderr] 4648 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::utils::log`
[INFO] [stderr]  --> src/typecheck/mod.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use crate::utils::log;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/typecheck/letexp.rs:283:55
[INFO] [stderr]     |
[INFO] [stderr] 283 |     fn sort_decs(decs: &[(_TypeDec, Pos)], order: Vec<(Symbol)>, record_names: Vec<(Symbol)>) -> (Vec<&(_TypeDec, Pos)>, Vec<&(_TypeDec, Pos)>) {
[INFO] [stderr]     |                                                       ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/typecheck/letexp.rs:283:84
[INFO] [stderr]     |
[INFO] [stderr] 283 |     fn sort_decs(decs: &[(_TypeDec, Pos)], order: Vec<(Symbol)>, record_names: Vec<(Symbol)>) -> (Vec<&(_TypeDec, Pos)>, Vec<&(_TypeDec, Pos)>) {
[INFO] [stderr]     |                                                                                    ^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::utils::log`
[INFO] [stderr]  --> src/tree/escape.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::utils::log;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::utils::log`
[INFO] [stderr]  --> src/tree/translate/mod.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::utils::log;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::utils::log`
[INFO] [stderr]  --> src/tree/translate/callexp.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::utils::log;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]   --> src/tree/translate/mod.rs:94:38
[INFO] [stderr]    |
[INFO] [stderr] 94 | pub fn translate(exp: AST) -> Result<(Vec<Fragment>), TransError> {
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::utils::log`
[INFO] [stderr]   --> src/tree/level.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use crate::utils::log;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `bind_by_move_pattern_guards` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stderr]   --> src/lib.rs:17:12
[INFO] [stderr]    |
[INFO] [stderr] 17 | #![feature(bind_by_move_pattern_guards)]
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `bind_by_move_pattern_guards` has been stable since 1.39.0 and no longer requires an attribute to enable
[INFO] [stderr]   --> src/lib.rs:17:12
[INFO] [stderr]    |
[INFO] [stderr] 17 | #![feature(bind_by_move_pattern_guards)]
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 56s
[INFO] running `"docker" "inspect" "1c2bfbff1a628144241771ebebc938126d7fb5cd321f12e347aa2277b6864cc0"`
[INFO] running `"docker" "rm" "-f" "1c2bfbff1a628144241771ebebc938126d7fb5cd321f12e347aa2277b6864cc0"`
[INFO] [stdout] 1c2bfbff1a628144241771ebebc938126d7fb5cd321f12e347aa2277b6864cc0