Nov 28 08:00:29.354 INFO checking cdouglass/samara against master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5 for pr-56074
Nov 28 08:00:29.354 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-7/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56074/master#0b9f19dff1347e29bf4362ab5a8fab84b43023b5:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +0b9f19dff1347e29bf4362ab5a8fab84b43023b5-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 28 08:00:29.608 INFO [stdout] d776a673d04afeeb148d3805e427bd8c17e78362e004cbd3fdfefb105e945d6d
Nov 28 08:00:29.612 INFO running `"docker" "start" "-a" "d776a673d04afeeb148d3805e427bd8c17e78362e004cbd3fdfefb105e945d6d"`
Nov 28 08:00:30.308 INFO [stderr] usermod: no changes
Nov 28 08:00:30.442 INFO [stderr]    Compiling error-chain v0.11.0
Nov 28 08:00:30.443 INFO [stderr]     Checking bytecount v0.2.0
Nov 28 08:00:30.447 INFO [stderr]     Checking pulldown-cmark v0.1.0
Nov 28 08:00:30.447 INFO [stderr]     Checking tempdir v0.3.5
Nov 28 08:00:31.824 INFO [stderr]    Compiling skeptic v0.13.0
Nov 28 08:00:37.432 INFO [stderr]    Compiling samara v0.1.0 (/source)
Nov 28 08:00:42.497 INFO [stderr] warning: unnecessary parentheses around method argument
Nov 28 08:00:42.498 INFO [stderr]   --> src/structures/patterns.rs:46:46
Nov 28 08:00:42.498 INFO [stderr]    |
Nov 28 08:00:42.499 INFO [stderr] 46 |                   patterns.iter().fold(vec![], (|mut v, pat| {
Nov 28 08:00:42.500 INFO [stderr]    |  ______________________________________________^
Nov 28 08:00:42.500 INFO [stderr] 47 | |                     v.extend(pat.identifiers());
Nov 28 08:00:42.501 INFO [stderr] 48 | |                     v}))
Nov 28 08:00:42.501 INFO [stderr]    | |_______________________^
Nov 28 08:00:42.502 INFO [stderr]    |
Nov 28 08:00:42.502 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Nov 28 08:00:42.503 INFO [stderr] help: remove these parentheses
Nov 28 08:00:42.504 INFO [stderr]    |
Nov 28 08:00:42.504 INFO [stderr] 46 |                 patterns.iter().fold(vec![], |mut v, pat| {
Nov 28 08:00:42.505 INFO [stderr] 47 |                     v.extend(pat.identifiers());
Nov 28 08:00:42.505 INFO [stderr] 48 |                     v})
Nov 28 08:00:42.506 INFO [stderr]    |
Nov 28 08:00:42.506 INFO [stderr] 
Nov 28 08:00:42.716 INFO [stderr] warning: unnecessary parentheses around method argument
Nov 28 08:00:42.716 INFO [stderr]   --> src/structures/patterns.rs:46:46
Nov 28 08:00:42.716 INFO [stderr]    |
Nov 28 08:00:42.716 INFO [stderr] 46 |                   patterns.iter().fold(vec![], (|mut v, pat| {
Nov 28 08:00:42.716 INFO [stderr]    |  ______________________________________________^
Nov 28 08:00:42.716 INFO [stderr] 47 | |                     v.extend(pat.identifiers());
Nov 28 08:00:42.716 INFO [stderr] 48 | |                     v}))
Nov 28 08:00:42.716 INFO [stderr]    | |_______________________^
Nov 28 08:00:42.716 INFO [stderr]    |
Nov 28 08:00:42.716 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Nov 28 08:00:42.716 INFO [stderr] help: remove these parentheses
Nov 28 08:00:42.716 INFO [stderr]    |
Nov 28 08:00:42.716 INFO [stderr] 46 |                 patterns.iter().fold(vec![], |mut v, pat| {
Nov 28 08:00:42.716 INFO [stderr] 47 |                     v.extend(pat.identifiers());
Nov 28 08:00:42.716 INFO [stderr] 48 |                     v})
Nov 28 08:00:42.716 INFO [stderr]    |
Nov 28 08:00:42.716 INFO [stderr] 
Nov 28 08:00:42.716 INFO [stderr] warning: unnecessary parentheses around function argument
Nov 28 08:00:42.717 INFO [stderr]    --> src/parse/decl.rs:199:67
Nov 28 08:00:42.717 INFO [stderr]     |
Nov 28 08:00:42.717 INFO [stderr] 199 |         assert_parses_type("Int -> Bool -> Int", arrow(Type::Int, (arrow(Type::Bool, Type::Int))));
Nov 28 08:00:42.717 INFO [stderr]     |                                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Nov 28 08:00:42.717 INFO [stderr] 
Nov 28 08:00:45.024 INFO [stderr] warning: variable does not need to be mutable
Nov 28 08:00:45.024 INFO [stderr]   --> src/tests.rs:14:38
Nov 28 08:00:45.024 INFO [stderr]    |
Nov 28 08:00:45.024 INFO [stderr] 14 | fn assert_evaluation_err(expr: &str, mut bindings: &mut Vec<LetBinding>, mut gen: &mut GenTypeVar, msg: &str) {
Nov 28 08:00:45.024 INFO [stderr]    |                                      ----^^^^^^^^
Nov 28 08:00:45.024 INFO [stderr]    |                                      |
Nov 28 08:00:45.024 INFO [stderr]    |                                      help: remove this `mut`
Nov 28 08:00:45.024 INFO [stderr]    |
Nov 28 08:00:45.024 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 08:00:45.024 INFO [stderr] 
Nov 28 08:00:45.024 INFO [stderr] warning: variable does not need to be mutable
Nov 28 08:00:45.024 INFO [stderr]   --> src/tests.rs:14:74
Nov 28 08:00:45.024 INFO [stderr]    |
Nov 28 08:00:45.024 INFO [stderr] 14 | fn assert_evaluation_err(expr: &str, mut bindings: &mut Vec<LetBinding>, mut gen: &mut GenTypeVar, msg: &str) {
Nov 28 08:00:45.024 INFO [stderr]    |                                                                          ----^^^
Nov 28 08:00:45.024 INFO [stderr]    |                                                                          |
Nov 28 08:00:45.024 INFO [stderr]    |                                                                          help: remove this `mut`
Nov 28 08:00:45.024 INFO [stderr] 
Nov 28 08:00:45.024 INFO [stderr] warning: variable does not need to be mutable
Nov 28 08:00:45.024 INFO [stderr]   --> src/tests.rs:24:90
Nov 28 08:00:45.024 INFO [stderr]    |
Nov 28 08:00:45.024 INFO [stderr] 24 | fn assert_evaluates_to_atom_with_context(expr: &str, mut bindings: &mut Vec<LetBinding>, mut gen: &mut GenTypeVar, sum_types: &SumTypeDefs, expected: Atom) {
Nov 28 08:00:45.024 INFO [stderr]    |                                                                                          ----^^^
Nov 28 08:00:45.024 INFO [stderr]    |                                                                                          |
Nov 28 08:00:45.024 INFO [stderr]    |                                                                                          help: remove this `mut`
Nov 28 08:00:45.024 INFO [stderr] 
Nov 28 08:00:45.024 INFO [stderr] warning: variable does not need to be mutable
Nov 28 08:00:45.024 INFO [stderr]   --> src/tests.rs:34:41
Nov 28 08:00:45.025 INFO [stderr]    |
Nov 28 08:00:45.025 INFO [stderr] 34 | fn assert_evaluates_to_atom(expr: &str, mut bindings: &mut Vec<LetBinding>, mut gen: &mut GenTypeVar, expected: Atom) {
Nov 28 08:00:45.025 INFO [stderr]    |                                         ----^^^^^^^^
Nov 28 08:00:45.025 INFO [stderr]    |                                         |
Nov 28 08:00:45.025 INFO [stderr]    |                                         help: remove this `mut`
Nov 28 08:00:45.025 INFO [stderr] 
Nov 28 08:00:45.025 INFO [stderr] warning: variable does not need to be mutable
Nov 28 08:00:45.025 INFO [stderr]   --> src/tests.rs:34:77
Nov 28 08:00:45.025 INFO [stderr]    |
Nov 28 08:00:45.025 INFO [stderr] 34 | fn assert_evaluates_to_atom(expr: &str, mut bindings: &mut Vec<LetBinding>, mut gen: &mut GenTypeVar, expected: Atom) {
Nov 28 08:00:45.025 INFO [stderr]    |                                                                             ----^^^
Nov 28 08:00:45.025 INFO [stderr]    |                                                                             |
Nov 28 08:00:45.025 INFO [stderr]    |                                                                             help: remove this `mut`
Nov 28 08:00:45.025 INFO [stderr] 
Nov 28 08:00:45.529 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.19s
Nov 28 08:00:45.536 INFO [stderr] su: No module specific data is present
Nov 28 08:00:46.022 INFO running `"docker" "inspect" "d776a673d04afeeb148d3805e427bd8c17e78362e004cbd3fdfefb105e945d6d"`
Nov 28 08:00:46.162 INFO running `"docker" "rm" "-f" "d776a673d04afeeb148d3805e427bd8c17e78362e004cbd3fdfefb105e945d6d"`
Nov 28 08:00:46.332 INFO [stdout] d776a673d04afeeb148d3805e427bd8c17e78362e004cbd3fdfefb105e945d6d