[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] [stderr] From https://github.com/ivoelbert/tigerust
[INFO] [stderr]    3a31f6d..1c35ce1  master     -> master
[INFO] [stderr]  * [new branch]      move_tests -> move_tests
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1c35ce14f3517a6631a9565a249c32ec08b3591f
[INFO] testing ivoelbert/tigerust against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivoelbert%2Ftigerust" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ivoelbert/tigerust on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "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-4/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" "+28742a1146f10a4f09369baad027a464acb7a766" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3e2cf92c67d5124b0e3a23b782062d62e9d4c33bc594c70b9daac466efed2dcc
[INFO] running `"docker" "start" "-a" "3e2cf92c67d5124b0e3a23b782062d62e9d4c33bc594c70b9daac466efed2dcc"`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling serde v1.0.94
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.34
[INFO] [stderr]    Compiling utf8-ranges v1.0.3
[INFO] [stderr]    Compiling wasm-bindgen v0.2.34
[INFO] [stderr]    Compiling strsim v0.9.2
[INFO] [stderr]    Compiling bit-vec v0.5.1
[INFO] [stderr]    Compiling opaque-debug v0.2.2
[INFO] [stderr]    Compiling lalrpop-util v0.17.1
[INFO] [stderr]    Compiling indexmap v1.0.2
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling bit-set v0.5.1
[INFO] [stderr]    Compiling ena v0.13.0
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]    Compiling aho-corasick v0.7.4
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling digest v0.8.0
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling sha2 v0.8.0
[INFO] [stderr]    Compiling regex v1.2.0
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]    Compiling pathfinding v1.1.12
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling nanoid v0.2.0
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.34
[INFO] [stderr]    Compiling serde_derive v1.0.94
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.34
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.34
[INFO] [stderr]    Compiling docopt v1.1.0
[INFO] [stderr]    Compiling serde_json v1.0.42
[INFO] [stderr]    Compiling uuid v0.8.1
[INFO] [stderr]    Compiling snowflake v1.3.0
[INFO] [stderr]    Compiling lalrpop v0.17.1
[INFO] [stderr]    Compiling console_error_panic_hook v0.1.5
[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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/out/parser.rs:4648:5
[INFO] [stderr]      |
[INFO] [stderr] 4648 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[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: unnecessary parentheses around type
[INFO] [stderr]   --> src/tree/translate/mod.rs:93:38
[INFO] [stderr]    |
[INFO] [stderr] 93 | pub fn translate(exp: AST) -> Result<(Vec<Fragment>), TransError> {
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^ help: remove these parentheses
[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: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]   --> src/tree/mod.rs:64:15
[INFO] [stderr]    |
[INFO] [stderr] 64 |     externals.into_iter().map(|name| -> (String, EnvEntry) {
[INFO] [stderr]    |               ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: 21 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 38s
[INFO] running `"docker" "inspect" "3e2cf92c67d5124b0e3a23b782062d62e9d4c33bc594c70b9daac466efed2dcc"`
[INFO] running `"docker" "rm" "-f" "3e2cf92c67d5124b0e3a23b782062d62e9d4c33bc594c70b9daac466efed2dcc"`
[INFO] [stdout] 3e2cf92c67d5124b0e3a23b782062d62e9d4c33bc594c70b9daac466efed2dcc
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8940d6b6c893e01edf712397d94fa9f7c85cc917d8a26c364afb6a575a425e09
[INFO] running `"docker" "start" "-a" "8940d6b6c893e01edf712397d94fa9f7c85cc917d8a26c364afb6a575a425e09"`
[INFO] [stderr]    Compiling scoped-tls v0.1.2
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.2.34
[INFO] [stderr]    Compiling js-sys v0.3.11
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/out/parser.rs:4648:5
[INFO] [stderr]      |
[INFO] [stderr] 4648 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[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: unnecessary parentheses around type
[INFO] [stderr]   --> src/tree/translate/mod.rs:93:38
[INFO] [stderr]    |
[INFO] [stderr] 93 | pub fn translate(exp: AST) -> Result<(Vec<Fragment>), TransError> {
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^ help: remove these parentheses
[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: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]   --> src/tree/mod.rs:64:15
[INFO] [stderr]    |
[INFO] [stderr] 64 |     externals.into_iter().map(|name| -> (String, EnvEntry) {
[INFO] [stderr]    |               ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: 21 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]    Compiling wasm-bindgen-futures v0.3.11
[INFO] [stderr]    Compiling 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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/out/parser.rs:4648:5
[INFO] [stderr]      |
[INFO] [stderr] 4648 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[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: unnecessary parentheses around type
[INFO] [stderr]   --> src/tree/translate/mod.rs:93:38
[INFO] [stderr]    |
[INFO] [stderr] 93 | pub fn translate(exp: AST) -> Result<(Vec<Fragment>), TransError> {
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^ help: remove these parentheses
[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: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]   --> src/tree/mod.rs:64:15
[INFO] [stderr]    |
[INFO] [stderr] 64 |     externals.into_iter().map(|name| -> (String, EnvEntry) {
[INFO] [stderr]    |               ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: 21 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 20.52s
[INFO] running `"docker" "inspect" "8940d6b6c893e01edf712397d94fa9f7c85cc917d8a26c364afb6a575a425e09"`
[INFO] running `"docker" "rm" "-f" "8940d6b6c893e01edf712397d94fa9f7c85cc917d8a26c364afb6a575a425e09"`
[INFO] [stdout] 8940d6b6c893e01edf712397d94fa9f7c85cc917d8a26c364afb6a575a425e09
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 448389de61b5484bc69e936345d96748fe6945cea7e4b879168895547083a2ea
[INFO] running `"docker" "start" "-a" "448389de61b5484bc69e936345d96748fe6945cea7e4b879168895547083a2ea"`
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/out/parser.rs:4648:5
[INFO] [stderr]      |
[INFO] [stderr] 4648 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[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: unnecessary parentheses around type
[INFO] [stderr]   --> src/tree/translate/mod.rs:93:38
[INFO] [stderr]    |
[INFO] [stderr] 93 | pub fn translate(exp: AST) -> Result<(Vec<Fragment>), TransError> {
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^ help: remove these parentheses
[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: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]   --> src/tree/mod.rs:64:15
[INFO] [stderr]    |
[INFO] [stderr] 64 |     externals.into_iter().map(|name| -> (String, EnvEntry) {
[INFO] [stderr]    |               ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: 21 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]     --> /opt/rustwide/target/debug/build/tigerust-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/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-c067a429c4836a36/out/parser.rs:4648:5
[INFO] [stderr]      |
[INFO] [stderr] 4648 |     (__0)
[INFO] [stderr]      |     ^^^^^ help: remove these parentheses
[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: unnecessary parentheses around type
[INFO] [stderr]   --> src/tree/translate/mod.rs:93:38
[INFO] [stderr]    |
[INFO] [stderr] 93 | pub fn translate(exp: AST) -> Result<(Vec<Fragment>), TransError> {
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^ help: remove these parentheses
[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: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]   --> src/tree/mod.rs:64:15
[INFO] [stderr]    |
[INFO] [stderr] 64 |     externals.into_iter().map(|name| -> (String, EnvEntry) {
[INFO] [stderr]    |               ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: 21 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.47s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/tigerust-8af953f35cfca01b
[INFO] [stdout] 
[INFO] [stdout] running 93 tests
[INFO] [stdout] test ast::parser::test::simple_mult ... ok
[INFO] [stdout] test ast::parser::test::breakexp ... ok
[INFO] [stdout] test ast::parser::test::number ... ok
[INFO] [stdout] test ast::parser::test::assignexp ... ok
[INFO] [stdout] test ast::parser::test::simplevar ... ok
[INFO] [stdout] test tree::escape::test::escaped_arguments ... ok
[INFO] [stdout] test ast::parser::test::simple_sum ... ok
[INFO] [stdout] test tree::escape::test::escaped_var ... ok
[INFO] [stdout] test tree::escape::test::escaped_for ... ok
[INFO] [stdout] test tree::escape::test::not_escaped_for ... ok
[INFO] [stdout] test tree::escape::test::not_escaped_var ... ok
[INFO] [stdout] test tree::translate::breakexp::test::break_no_labels_error ... ok
[INFO] [stdout] test tree::translate::breakexp::test::break_none_label_error ... ok
[INFO] [stdout] test tree::translate::breakexp::test::break_ok ... ok
[INFO] [stdout] test tree::translate::stringexp::test::stringexp_ok ... ok
[INFO] [stdout] test typecheck::arrayexp::test::arrayexp_not_array_type ... ok
[INFO] [stdout] test typecheck::arrayexp::test::arrayexp_ok ... ok
[INFO] [stdout] test typecheck::arrayexp::test::arrayexp_size_not_int ... ok
[INFO] [stdout] test typecheck::arrayexp::test::arrayexp_type_mismatch ... ok
[INFO] [stdout] test typecheck::arrayexp::test::arrayexp_undeclared_type ... ok
[INFO] [stdout] test typecheck::assignexp::test::assignexp_ok ... ok
[INFO] [stdout] test typecheck::assignexp::test::assignexp_type_mismatch ... ok
[INFO] [stdout] test typecheck::assignexp::test::assignexp_undeclared_variable ... ok
[INFO] [stdout] test typecheck::assignexp::test::assignexp_variable_read_only ... ok
[INFO] [stdout] test typecheck::breakexp::test::breakexp ... ok
[INFO] [stdout] test typecheck::callexp::test::callexp_ok ... ok
[INFO] [stdout] test typecheck::callexp::test::callexp_too_few_args ... ok
[INFO] [stdout] test typecheck::callexp::test::callexp_too_many_args ... ok
[INFO] [stdout] test typecheck::callexp::test::callexp_undeclared_function ... ok
[INFO] [stdout] test typecheck::forexp::test::forexp_iterator_is_usable ... ok
[INFO] [stdout] test typecheck::forexp::test::forexp_non_unit_hi ... ok
[INFO] [stdout] test typecheck::forexp::test::forexp_non_unit_lo ... ok
[INFO] [stdout] test typecheck::forexp::test::forexp_npn_unit_body ... ok
[INFO] [stdout] test typecheck::forexp::test::forexp_ok ... ok
[INFO] [stdout] test typecheck::ifexp::test::ifexp_non_integer_test ... ok
[INFO] [stdout] test typecheck::ifexp::test::ifexp_non_unit_body ... ok
[INFO] [stdout] test typecheck::ifexp::test::ifexp_ok ... ok
[INFO] [stdout] test typecheck::ifexp::test::ifexp_type_mismatch ... ok
[INFO] [stdout] test ast::parser::test::simple_comp ... ok
[INFO] [stdout] test typecheck::letexp::test::letexp_functiondec_body_result_type_mismatch ... ok
[INFO] [stdout] test typecheck::letexp::test::letexp_functiondec_body_type_error ... ok
[INFO] [stdout] test typecheck::letexp::test::letexp_functiondec_called_ok ... ok
[INFO] [stdout] test typecheck::letexp::test::letexp_functiondec_ok ... ok
[INFO] [stdout] test typecheck::intexp::test::intexp ... ok
[INFO] [stdout] test typecheck::letexp::test::letexp_functiondec_recursion ... ok
[INFO] [stdout] test typecheck::letexp::test::letexp_functiondec_repeated_function_names ... ok
[INFO] [stdout] test typecheck::letexp::test::letexp_functiondec_repeated_param_names ... ok
[INFO] [stdout] test typecheck::letexp::test::letexp_typedec_array_ok ... ok
[INFO] [stdout] test tree::escape::test::not_escaped_arguments ... ok
[INFO] [stdout] test typecheck::letexp::test::letexp_todas_all_decs_ok ... ok
[INFO] [stdout] test typecheck::letexp::test::letexp_typedec_record_ok ... ok
[INFO] [stdout] test typecheck::letexp::test::letexp_typedec_infinite_recursion ... ok
[INFO] [stdout] test typecheck::letexp::test::letexp_typedec_undeclared_type ... ok
[INFO] [stdout] test typecheck::letexp::test::letexp_typedec_name_ok ... ok
[INFO] [stdout] test typecheck::letexp::test::letexp_vardec_type_ok ... ok
[INFO] [stdout] test typecheck::letexp::test::letexp_vardec_no_type_ok ... ok
[INFO] [stdout] test typecheck::letexp::test::letexp_vardec_type_mismatch ... ok
[INFO] [stdout] test typecheck::letexp::test::record_type_cycle_ok ... ok
[INFO] [stdout] test typecheck::nilexp::test::nilexp ... ok
[INFO] [stdout] test ast::parser::test::string ... ok
[INFO] [stdout] test typecheck::letexp::test::test_typedec_recursive_ok ... ok
[INFO] [stdout] test typecheck::recordexp::test::recordexp_non_record_type ... ok
[INFO] [stdout] test typecheck::letexp::test::letexp_vardec_undeclared_type ... ok
[INFO] [stdout] test typecheck::opexp::test::opexp_type_mismatch ... ok
[INFO] [stdout] test typecheck::recordexp::test::recordexp_undeclard_type ... ok
[INFO] [stdout] test typecheck::seqexp::test::seqexp_ok ... ok
[INFO] [stdout] test typecheck::unitexp::test::unitexp ... ok
[INFO] [stdout] test typecheck::recordexp::test::recordexp_ok ... ok
[INFO] [stdout] test typecheck::opexp::test::opexp_ok ... ok
[INFO] [stdout] test typecheck::stringexp::test::stringexp ... ok
[INFO] [stdout] test ast::parser::test::ifexp ... ok
[INFO] [stdout] test typecheck::varexp::test::varexp_fieldvar_field_does_not_exist ... ok
[INFO] [stdout] test typecheck::varexp::test::varexp_simplevar_not_simple ... ok
[INFO] [stdout] test typecheck::varexp::test::varexp_simplevar_ok ... ok
[INFO] [stdout] test typecheck::varexp::test::varexp_subscriptvar_non_integer_index ... ok
[INFO] [stdout] test typecheck::varexp::test::varexp_subscriptvar_ok ... ok
[INFO] [stdout] test typecheck::varexp::test::varexp_fieldvar_not_record ... ok
[INFO] [stdout] test typecheck::varexp::test::varexp_simplevar_not_declared ... ok
[INFO] [stdout] test typecheck::varexp::test::varexp_subscriptvar_not_array ... ok
[INFO] [stdout] test typecheck::whileexp::test::whileexp_ok ... ok
[INFO] [stdout] test typecheck::varexp::test::varexp_fieldvar_ok ... ok
[INFO] [stdout] test typecheck::whileexp::test::whileexp_non_integer_condition ... ok
[INFO] [stdout] test ast::parser::test::fieldvar ... ok
[INFO] [stdout] test ast::parser::test::letexp_typedec_namety ... ok
[INFO] [stdout] test ast::parser::test::letexp_typedec_arrayty ... ok
[INFO] [stdout] test ast::parser::test::custom ... ok
[INFO] [stdout] test ast::parser::test::letexp_arrayexp ... ok
[INFO] [stdout] test ast::parser::test::seqexp ... ok
[INFO] [stdout] test ast::parser::test::forexp ... ok
[INFO] [stdout] test ast::parser::test::letexp_functiondec ... ok
[INFO] [stdout] test ast::parser::test::subscriptvar ... ok
[INFO] [stdout] test ast::parser::test::callexp ... ok
[INFO] [stdout] test ast::parser::test::letexp_typedec_recordty ... ok
[INFO] [stderr]    Doc-tests tigerust
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 93 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "448389de61b5484bc69e936345d96748fe6945cea7e4b879168895547083a2ea"`
[INFO] running `"docker" "rm" "-f" "448389de61b5484bc69e936345d96748fe6945cea7e4b879168895547083a2ea"`
[INFO] [stdout] 448389de61b5484bc69e936345d96748fe6945cea7e4b879168895547083a2ea