[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]    7d5b1a1..e14a276  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e14a276b19f7c325f5d464ae62a8865b927e7043
[INFO] checking ivoelbert/tigerust against master#30ca215b4e38b32aa7abdd635c5e2d56f5724494 for pr-66037
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fivoelbert%2Ftigerust" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ivoelbert/tigerust on toolchain 30ca215b4e38b32aa7abdd635c5e2d56f5724494
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "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-14/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" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "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] 66244e31e31558fe7c6b1df1371807a98d6df29b933f61c605540082700d8a5e
[INFO] running `"docker" "start" "-a" "66244e31e31558fe7c6b1df1371807a98d6df29b933f61c605540082700d8a5e"`
[INFO] [stderr]    Compiling syn v0.15.39
[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]    Compiling opaque-debug v0.2.2
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.3
[INFO] [stderr]    Compiling strsim v0.9.2
[INFO] [stderr]    Compiling either v1.5.2
[INFO] [stderr]    Compiling lalrpop-util v0.17.1
[INFO] [stderr]    Compiling diff v0.1.11
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling block-padding v0.1.4
[INFO] [stderr]     Checking itertools v0.8.0
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.2.34
[INFO] [stderr]    Compiling ena v0.13.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling generic-array v0.12.3
[INFO] [stderr]     Checking nanoid v0.2.0
[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 phf_generator v0.7.24
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]     Checking pathfinding v1.1.12
[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]     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 type
[INFO] [stderr]    --> src/typecheck/letexp.rs:271:55
[INFO] [stderr]     |
[INFO] [stderr] 271 |     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]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/typecheck/letexp.rs:271:84
[INFO] [stderr]     |
[INFO] [stderr] 271 |     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: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: unnecessary parentheses around type
[INFO] [stderr]    --> src/typecheck/letexp.rs:271:55
[INFO] [stderr]     |
[INFO] [stderr] 271 |     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]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around type
[INFO] [stderr]    --> src/typecheck/letexp.rs:271:84
[INFO] [stderr]     |
[INFO] [stderr] 271 |     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: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: 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 2m 06s
[INFO] running `"docker" "inspect" "66244e31e31558fe7c6b1df1371807a98d6df29b933f61c605540082700d8a5e"`
[INFO] running `"docker" "rm" "-f" "66244e31e31558fe7c6b1df1371807a98d6df29b933f61c605540082700d8a5e"`
[INFO] [stdout] 66244e31e31558fe7c6b1df1371807a98d6df29b933f61c605540082700d8a5e