Nov 30 05:33:34.720 INFO checking cdouglass/samara against try#32252761328f59ccfadb1bafb8148c685bc830b3 for pr-56323
Nov 30 05:33:34.720 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-6/try#32252761328f59ccfadb1bafb8148c685bc830b3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56323/try#32252761328f59ccfadb1bafb8148c685bc830b3:/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 +32252761328f59ccfadb1bafb8148c685bc830b3-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 30 05:33:35.249 INFO [stdout] 933c5706a8da19bd31c70a6a29901a8e6a6f6af7ae5a8a52725fe0e03d8acef8
Nov 30 05:33:35.251 INFO running `"docker" "start" "-a" "933c5706a8da19bd31c70a6a29901a8e6a6f6af7ae5a8a52725fe0e03d8acef8"`
Nov 30 05:33:36.260 INFO [stderr] usermod: no changes
Nov 30 05:33:36.451 INFO [stderr]    Compiling pulldown-cmark v0.1.0
Nov 30 05:33:36.451 INFO [stderr]    Compiling serde v1.0.15
Nov 30 05:33:36.451 INFO [stderr]    Compiling error-chain v0.11.0
Nov 30 05:33:36.451 INFO [stderr]     Checking bytecount v0.2.0
Nov 30 05:33:36.456 INFO [stderr]    Compiling tempdir v0.3.5
Nov 30 05:33:40.297 INFO [stderr]     Checking skeptic v0.13.0
Nov 30 05:33:51.284 INFO [stderr]    Compiling serde_json v1.0.3
Nov 30 05:33:51.284 INFO [stderr]    Compiling toml v0.4.5
Nov 30 05:33:59.149 INFO [stderr]    Compiling samara v0.1.0 (/source)
Nov 30 05:34:03.074 INFO [stderr] warning: unnecessary parentheses around method argument
Nov 30 05:34:03.074 INFO [stderr]   --> src/structures/patterns.rs:46:46
Nov 30 05:34:03.074 INFO [stderr]    |
Nov 30 05:34:03.074 INFO [stderr] 46 |                   patterns.iter().fold(vec![], (|mut v, pat| {
Nov 30 05:34:03.074 INFO [stderr]    |  ______________________________________________^
Nov 30 05:34:03.074 INFO [stderr] 47 | |                     v.extend(pat.identifiers());
Nov 30 05:34:03.074 INFO [stderr] 48 | |                     v}))
Nov 30 05:34:03.074 INFO [stderr]    | |_______________________^
Nov 30 05:34:03.074 INFO [stderr]    |
Nov 30 05:34:03.074 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Nov 30 05:34:03.074 INFO [stderr] help: remove these parentheses
Nov 30 05:34:03.074 INFO [stderr]    |
Nov 30 05:34:03.074 INFO [stderr] 46 |                 patterns.iter().fold(vec![], |mut v, pat| {
Nov 30 05:34:03.074 INFO [stderr] 47 |                     v.extend(pat.identifiers());
Nov 30 05:34:03.074 INFO [stderr] 48 |                     v})
Nov 30 05:34:03.074 INFO [stderr]    |
Nov 30 05:34:03.074 INFO [stderr] 
Nov 30 05:34:03.303 INFO [stderr] warning: unnecessary parentheses around method argument
Nov 30 05:34:03.303 INFO [stderr]   --> src/structures/patterns.rs:46:46
Nov 30 05:34:03.303 INFO [stderr]    |
Nov 30 05:34:03.303 INFO [stderr] 46 |                   patterns.iter().fold(vec![], (|mut v, pat| {
Nov 30 05:34:03.303 INFO [stderr]    |  ______________________________________________^
Nov 30 05:34:03.303 INFO [stderr] 47 | |                     v.extend(pat.identifiers());
Nov 30 05:34:03.303 INFO [stderr] 48 | |                     v}))
Nov 30 05:34:03.303 INFO [stderr]    | |_______________________^
Nov 30 05:34:03.303 INFO [stderr]    |
Nov 30 05:34:03.303 INFO [stderr]    = note: #[warn(unused_parens)] on by default
Nov 30 05:34:03.303 INFO [stderr] help: remove these parentheses
Nov 30 05:34:03.303 INFO [stderr]    |
Nov 30 05:34:03.303 INFO [stderr] 46 |                 patterns.iter().fold(vec![], |mut v, pat| {
Nov 30 05:34:03.303 INFO [stderr] 47 |                     v.extend(pat.identifiers());
Nov 30 05:34:03.303 INFO [stderr] 48 |                     v})
Nov 30 05:34:03.303 INFO [stderr]    |
Nov 30 05:34:03.303 INFO [stderr] 
Nov 30 05:34:03.306 INFO [stderr] warning: unnecessary parentheses around function argument
Nov 30 05:34:03.306 INFO [stderr]    --> src/parse/decl.rs:199:67
Nov 30 05:34:03.306 INFO [stderr]     |
Nov 30 05:34:03.306 INFO [stderr] 199 |         assert_parses_type("Int -> Bool -> Int", arrow(Type::Int, (arrow(Type::Bool, Type::Int))));
Nov 30 05:34:03.306 INFO [stderr]     |                                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Nov 30 05:34:03.306 INFO [stderr] 
Nov 30 05:34:04.353 INFO [stderr] warning: variable does not need to be mutable
Nov 30 05:34:04.353 INFO [stderr]   --> src/tests.rs:14:38
Nov 30 05:34:04.353 INFO [stderr]    |
Nov 30 05:34:04.353 INFO [stderr] 14 | fn assert_evaluation_err(expr: &str, mut bindings: &mut Vec<LetBinding>, mut gen: &mut GenTypeVar, msg: &str) {
Nov 30 05:34:04.353 INFO [stderr]    |                                      ----^^^^^^^^
Nov 30 05:34:04.353 INFO [stderr]    |                                      |
Nov 30 05:34:04.353 INFO [stderr]    |                                      help: remove this `mut`
Nov 30 05:34:04.353 INFO [stderr]    |
Nov 30 05:34:04.353 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 30 05:34:04.353 INFO [stderr] 
Nov 30 05:34:04.353 INFO [stderr] warning: variable does not need to be mutable
Nov 30 05:34:04.353 INFO [stderr]   --> src/tests.rs:14:74
Nov 30 05:34:04.353 INFO [stderr]    |
Nov 30 05:34:04.353 INFO [stderr] 14 | fn assert_evaluation_err(expr: &str, mut bindings: &mut Vec<LetBinding>, mut gen: &mut GenTypeVar, msg: &str) {
Nov 30 05:34:04.353 INFO [stderr]    |                                                                          ----^^^
Nov 30 05:34:04.354 INFO [stderr]    |                                                                          |
Nov 30 05:34:04.354 INFO [stderr]    |                                                                          help: remove this `mut`
Nov 30 05:34:04.354 INFO [stderr] 
Nov 30 05:34:04.356 INFO [stderr] warning: variable does not need to be mutable
Nov 30 05:34:04.357 INFO [stderr]   --> src/tests.rs:24:90
Nov 30 05:34:04.357 INFO [stderr]    |
Nov 30 05:34:04.357 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 30 05:34:04.357 INFO [stderr]    |                                                                                          ----^^^
Nov 30 05:34:04.357 INFO [stderr]    |                                                                                          |
Nov 30 05:34:04.357 INFO [stderr]    |                                                                                          help: remove this `mut`
Nov 30 05:34:04.357 INFO [stderr] 
Nov 30 05:34:04.357 INFO [stderr] warning: variable does not need to be mutable
Nov 30 05:34:04.357 INFO [stderr]   --> src/tests.rs:34:41
Nov 30 05:34:04.357 INFO [stderr]    |
Nov 30 05:34:04.357 INFO [stderr] 34 | fn assert_evaluates_to_atom(expr: &str, mut bindings: &mut Vec<LetBinding>, mut gen: &mut GenTypeVar, expected: Atom) {
Nov 30 05:34:04.357 INFO [stderr]    |                                         ----^^^^^^^^
Nov 30 05:34:04.357 INFO [stderr]    |                                         |
Nov 30 05:34:04.357 INFO [stderr]    |                                         help: remove this `mut`
Nov 30 05:34:04.357 INFO [stderr] 
Nov 30 05:34:04.357 INFO [stderr] warning: variable does not need to be mutable
Nov 30 05:34:04.357 INFO [stderr]   --> src/tests.rs:34:77
Nov 30 05:34:04.357 INFO [stderr]    |
Nov 30 05:34:04.357 INFO [stderr] 34 | fn assert_evaluates_to_atom(expr: &str, mut bindings: &mut Vec<LetBinding>, mut gen: &mut GenTypeVar, expected: Atom) {
Nov 30 05:34:04.357 INFO [stderr]    |                                                                             ----^^^
Nov 30 05:34:04.357 INFO [stderr]    |                                                                             |
Nov 30 05:34:04.357 INFO [stderr]    |                                                                             help: remove this `mut`
Nov 30 05:34:04.357 INFO [stderr] 
Nov 30 05:34:04.951 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.67s
Nov 30 05:34:04.959 INFO [stderr] su: No module specific data is present
Nov 30 05:34:06.253 INFO running `"docker" "inspect" "933c5706a8da19bd31c70a6a29901a8e6a6f6af7ae5a8a52725fe0e03d8acef8"`
Nov 30 05:34:06.466 INFO running `"docker" "rm" "-f" "933c5706a8da19bd31c70a6a29901a8e6a6f6af7ae5a8a52725fe0e03d8acef8"`
Nov 30 05:34:06.712 INFO [stdout] 933c5706a8da19bd31c70a6a29901a8e6a6f6af7ae5a8a52725fe0e03d8acef8