Oct 12 23:51:34.837 INFO checking cdouglass/samara against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 23:51:34.839 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-3/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-3/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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"`
Oct 12 23:51:35.358 INFO blam! 832984ab0b3726a76d33d20d1e1a9495781f5f9dae268097534b380fcaa2e7ba
Oct 12 23:51:35.360 INFO running `"docker" "start" "-a" "832984ab0b3726a76d33d20d1e1a9495781f5f9dae268097534b380fcaa2e7ba"`
Oct 12 23:51:36.380 INFO kablam! usermod: no changes
Oct 12 23:51:36.496 INFO kablam!    Compiling libc v0.2.31
Oct 12 23:51:36.497 INFO kablam!    Compiling serde v1.0.15
Oct 12 23:51:36.497 INFO kablam!    Compiling getopts v0.2.15
Oct 12 23:51:36.526 INFO kablam!    Compiling error-chain v0.11.0
Oct 12 23:51:36.526 INFO kablam!     Checking bytecount v0.2.0
Oct 12 23:51:36.527 INFO kablam!     Checking tempdir v0.3.5
Oct 12 23:51:37.787 INFO kablam!     Checking skeptic v0.13.0
Oct 12 23:51:41.049 INFO kablam!    Compiling rand v0.3.16
Oct 12 23:51:41.239 INFO kablam!    Compiling pulldown-cmark v0.1.0
Oct 12 23:51:54.556 INFO kablam!    Compiling serde_json v1.0.3
Oct 12 23:51:54.556 INFO kablam!    Compiling toml v0.4.5
Oct 12 23:52:02.542 INFO kablam!    Compiling samara v0.1.0 (/source)
Oct 12 23:52:07.031 INFO kablam! warning: unnecessary parentheses around method argument
Oct 12 23:52:07.031 INFO kablam!   --> src/structures/patterns.rs:46:46
Oct 12 23:52:07.031 INFO kablam!    |
Oct 12 23:52:07.031 INFO kablam! 46 |                   patterns.iter().fold(vec![], (|mut v, pat| {
Oct 12 23:52:07.031 INFO kablam!    |  ______________________________________________^
Oct 12 23:52:07.031 INFO kablam! 47 | |                     v.extend(pat.identifiers());
Oct 12 23:52:07.031 INFO kablam! 48 | |                     v}))
Oct 12 23:52:07.031 INFO kablam!    | |_______________________^ help: remove these parentheses
Oct 12 23:52:07.031 INFO kablam!    |
Oct 12 23:52:07.033 INFO kablam!    = note: #[warn(unused_parens)] on by default
Oct 12 23:52:07.033 INFO kablam! 
Oct 12 23:52:07.522 INFO kablam! warning: unnecessary parentheses around method argument
Oct 12 23:52:07.522 INFO kablam!   --> src/structures/patterns.rs:46:46
Oct 12 23:52:07.522 INFO kablam!    |
Oct 12 23:52:07.522 INFO kablam! 46 |                   patterns.iter().fold(vec![], (|mut v, pat| {
Oct 12 23:52:07.522 INFO kablam!    |  ______________________________________________^
Oct 12 23:52:07.522 INFO kablam! 47 | |                     v.extend(pat.identifiers());
Oct 12 23:52:07.523 INFO kablam! 48 | |                     v}))
Oct 12 23:52:07.523 INFO kablam!    | |_______________________^ help: remove these parentheses
Oct 12 23:52:07.523 INFO kablam!    |
Oct 12 23:52:07.523 INFO kablam!    = note: #[warn(unused_parens)] on by default
Oct 12 23:52:07.523 INFO kablam! 
Oct 12 23:52:07.525 INFO kablam! warning: unnecessary parentheses around function argument
Oct 12 23:52:07.525 INFO kablam!    --> src/parse/decl.rs:199:67
Oct 12 23:52:07.526 INFO kablam!     |
Oct 12 23:52:07.526 INFO kablam! 199 |         assert_parses_type("Int -> Bool -> Int", arrow(Type::Int, (arrow(Type::Bool, Type::Int))));
Oct 12 23:52:07.526 INFO kablam!     |                                                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
Oct 12 23:52:07.526 INFO kablam! 
Oct 12 23:52:09.572 INFO kablam! warning: variable does not need to be mutable
Oct 12 23:52:09.572 INFO kablam!   --> src/tests.rs:14:38
Oct 12 23:52:09.572 INFO kablam!    |
Oct 12 23:52:09.572 INFO kablam! 14 | fn assert_evaluation_err(expr: &str, mut bindings: &mut Vec<LetBinding>, mut gen: &mut GenTypeVar, msg: &str) {
Oct 12 23:52:09.572 INFO kablam!    |                                      ----^^^^^^^^
Oct 12 23:52:09.584 INFO kablam!    |                                      |
Oct 12 23:52:09.584 INFO kablam!    |                                      help: remove this `mut`
Oct 12 23:52:09.585 INFO kablam!    |
Oct 12 23:52:09.585 INFO kablam!    = note: #[warn(unused_mut)] on by default
Oct 12 23:52:09.585 INFO kablam! 
Oct 12 23:52:09.585 INFO kablam! warning: variable does not need to be mutable
Oct 12 23:52:09.585 INFO kablam!   --> src/tests.rs:14:74
Oct 12 23:52:09.585 INFO kablam!    |
Oct 12 23:52:09.585 INFO kablam! 14 | fn assert_evaluation_err(expr: &str, mut bindings: &mut Vec<LetBinding>, mut gen: &mut GenTypeVar, msg: &str) {
Oct 12 23:52:09.585 INFO kablam!    |                                                                          ----^^^
Oct 12 23:52:09.585 INFO kablam!    |                                                                          |
Oct 12 23:52:09.585 INFO kablam!    |                                                                          help: remove this `mut`
Oct 12 23:52:09.585 INFO kablam! 
Oct 12 23:52:09.587 INFO kablam! warning: variable does not need to be mutable
Oct 12 23:52:09.587 INFO kablam!   --> src/tests.rs:24:90
Oct 12 23:52:09.587 INFO kablam!    |
Oct 12 23:52:09.587 INFO kablam! 24 | fn assert_evaluates_to_atom_with_context(expr: &str, mut bindings: &mut Vec<LetBinding>, mut gen: &mut GenTypeVar, sum_types: &SumTypeDefs, expected: Atom) {
Oct 12 23:52:09.587 INFO kablam!    |                                                                                          ----^^^
Oct 12 23:52:09.587 INFO kablam!    |                                                                                          |
Oct 12 23:52:09.587 INFO kablam!    |                                                                                          help: remove this `mut`
Oct 12 23:52:09.587 INFO kablam! 
Oct 12 23:52:09.589 INFO kablam! warning: variable does not need to be mutable
Oct 12 23:52:09.589 INFO kablam!   --> src/tests.rs:34:41
Oct 12 23:52:09.589 INFO kablam!    |
Oct 12 23:52:09.589 INFO kablam! 34 | fn assert_evaluates_to_atom(expr: &str, mut bindings: &mut Vec<LetBinding>, mut gen: &mut GenTypeVar, expected: Atom) {
Oct 12 23:52:09.589 INFO kablam!    |                                         ----^^^^^^^^
Oct 12 23:52:09.589 INFO kablam!    |                                         |
Oct 12 23:52:09.589 INFO kablam!    |                                         help: remove this `mut`
Oct 12 23:52:09.589 INFO kablam! 
Oct 12 23:52:09.590 INFO kablam! warning: variable does not need to be mutable
Oct 12 23:52:09.590 INFO kablam!   --> src/tests.rs:34:77
Oct 12 23:52:09.590 INFO kablam!    |
Oct 12 23:52:09.590 INFO kablam! 34 | fn assert_evaluates_to_atom(expr: &str, mut bindings: &mut Vec<LetBinding>, mut gen: &mut GenTypeVar, expected: Atom) {
Oct 12 23:52:09.591 INFO kablam!    |                                                                             ----^^^
Oct 12 23:52:09.591 INFO kablam!    |                                                                             |
Oct 12 23:52:09.591 INFO kablam!    |                                                                             help: remove this `mut`
Oct 12 23:52:09.591 INFO kablam! 
Oct 12 23:52:10.686 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 34.28s
Oct 12 23:52:10.704 INFO kablam! su: No module specific data is present
Oct 12 23:52:11.860 INFO running `"docker" "rm" "-f" "832984ab0b3726a76d33d20d1e1a9495781f5f9dae268097534b380fcaa2e7ba"`
Oct 12 23:52:12.188 INFO blam! 832984ab0b3726a76d33d20d1e1a9495781f5f9dae268097534b380fcaa2e7ba