[INFO] crate an-rope 0.3.1 is already in cache
[INFO] extracting crate an-rope 0.3.1 into work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/reg/an-rope/0.3.1
[INFO] extracting crate an-rope 0.3.1 into work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/reg/an-rope/0.3.1
[INFO] validating manifest of an-rope-0.3.1 on toolchain master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of an-rope-0.3.1 on toolchain try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing an-rope-0.3.1
[INFO] finished frobbing an-rope-0.3.1
[INFO] frobbed toml for an-rope-0.3.1 written to work/ex/pr-59199/sources/master#bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7/reg/an-rope/0.3.1/Cargo.toml
[INFO] started frobbing an-rope-0.3.1
[INFO] finished frobbing an-rope-0.3.1
[INFO] frobbed toml for an-rope-0.3.1 written to work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/reg/an-rope/0.3.1/Cargo.toml
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+bc44841ad2a2ad5f6c5e67b9e35ed8e7e71d4dc7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking an-rope-0.3.1 against try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b for pr-59199
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-59199/worker-0/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-59199/sources/try#68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b/reg/an-rope/0.3.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+68fcf881bd1e4dbfc21e22f8c7a56b8a5d8e8f7b-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] efcb46b58c15ea2ef46830a49ac4d9af007e6f0124fb3142cafc3ddc4af43771
[INFO] running `"docker" "start" "-a" "efcb46b58c15ea2ef46830a49ac4d9af007e6f0124fb3142cafc3ddc4af43771"`
[INFO] [stderr]     Checking an-rope v0.3.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:762:46
[INFO] [stderr]     |
[INFO] [stderr] 762 |                               .scan(0, move |mut l, i|  {
[INFO] [stderr]     |                                              ----^
[INFO] [stderr]     |                                              |
[INFO] [stderr]     |                                              help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `metric::Line`
[INFO] [stderr]  --> src/test/mod.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use metric::Line;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `metric::Measured`
[INFO] [stderr]  --> src/test/mod.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use metric::Measured;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> src/test/mod.rs:61:18
[INFO] [stderr]    |
[INFO] [stderr] 61 |     r = r.delete((8..12));
[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 method argument
[INFO] [stderr]   --> src/test/mod.rs:68:18
[INFO] [stderr]    |
[INFO] [stderr] 68 |     r = r.delete((0..0));
[INFO] [stderr]    |                  ^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/test/mod.rs:117:14
[INFO] [stderr]     |
[INFO] [stderr] 117 |     r.delete((12..8)); // lol, fuck you
[INFO] [stderr]     |              ^^^^^^^ help: remove these parentheses
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]    --> src/slice.rs:710:9
[INFO] [stderr]     |
[INFO] [stderr] 710 |     use super::*;
[INFO] [stderr]     |         ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `nodes`
[INFO] [stderr]    --> src/internals/mod.rs:446:5
[INFO] [stderr]     |
[INFO] [stderr] 446 |     fn nodes(&self) -> Nodes {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Nodes`
[INFO] [stderr]    --> src/internals/mod.rs:645:1
[INFO] [stderr]     |
[INFO] [stderr] 645 | struct Nodes<'a>(Vec<&'a Node>);
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `left`
[INFO] [stderr]   --> src/internals/test.rs:49:10
[INFO] [stderr]    |
[INFO] [stderr] 49 |     let (left, right) = b.split(Line(1));
[INFO] [stderr]    |          ^^^^ help: consider prefixing with an underscore: `_left`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `right`
[INFO] [stderr]   --> src/internals/test.rs:49:16
[INFO] [stderr]    |
[INFO] [stderr] 49 |     let (left, right) = b.split(Line(1));
[INFO] [stderr]    |                ^^^^^ help: consider prefixing with an underscore: `_right`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/lib.rs:762:46
[INFO] [stderr]     |
[INFO] [stderr] 762 |                               .scan(0, move |mut l, i|  {
[INFO] [stderr]     |                                              ----^
[INFO] [stderr]     |                                              |
[INFO] [stderr]     |                                              help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/test/mod.rs:28:9
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let mut rope = Rope::from("this is\n\
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/test/mod.rs:44:9
[INFO] [stderr]    |
[INFO] [stderr] 44 |     let mut rope = Rope::from("this is\n\
[INFO] [stderr]    |         ----^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/test/mod.rs:116:9
[INFO] [stderr]     |
[INFO] [stderr] 116 |     let mut r = Rope::from("this is not fine");
[INFO] [stderr]     |         ----^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/test/mod.rs:476:17
[INFO] [stderr]     |
[INFO] [stderr] 476 |             let mut rope = Rope::from(a.clone());
[INFO] [stderr]     |                 ----^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `line_delete_test_1`
[INFO] [stderr]   --> src/test/mod.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn line_delete_test_1() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `line_delete_test_2`
[INFO] [stderr]   --> src/test/mod.rs:42:1
[INFO] [stderr]    |
[INFO] [stderr] 42 | fn line_delete_test_2() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `debug_test_1`
[INFO] [stderr]    --> src/test/mod.rs:125:5
[INFO] [stderr]     |
[INFO] [stderr] 125 |     fn debug_test_1() {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `debug_test_2`
[INFO] [stderr]    --> src/test/mod.rs:131:5
[INFO] [stderr]     |
[INFO] [stderr] 131 |     fn debug_test_2() {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `debug_test_3`
[INFO] [stderr]    --> src/test/mod.rs:137:5
[INFO] [stderr]     |
[INFO] [stderr] 137 |     fn debug_test_3() {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rope_indexing_is_string_indexing`
[INFO] [stderr]    --> src/test/mod.rs:446:5
[INFO] [stderr]     |
[INFO] [stderr] 446 |     fn rope_indexing_is_string_indexing() {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `rope_insert_char_is_string_insert_char`
[INFO] [stderr]    --> src/test/mod.rs:462:5
[INFO] [stderr]     |
[INFO] [stderr] 462 |     fn rope_insert_char_is_string_insert_char() {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `TEST_WORD`
[INFO] [stderr]     --> src/unicode/test/testdata.rs:520:5
[INFO] [stderr]      |
[INFO] [stderr] 520  | /     pub const TEST_WORD: &'static [(&'static str, &'static [&'static str])] = &[
[INFO] [stderr] 521  | |         ("\u{1}\u{1}", &["\u{1}", "\u{1}"]), ("\u{1}\u{308}\u{1}", &["\u{1}\u{308}", "\u{1}"]),
[INFO] [stderr] 522  | |         ("\u{1}\u{d}", &["\u{1}", "\u{d}"]), ("\u{1}\u{308}\u{d}", &["\u{1}\u{308}", "\u{d}"]),
[INFO] [stderr] 523  | |         ("\u{1}\u{a}", &["\u{1}", "\u{a}"]), ("\u{1}\u{308}\u{a}", &["\u{1}\u{308}", "\u{a}"]),
[INFO] [stderr] ...    |
[INFO] [stderr] 2056 | |         "\u{2c}", "\u{2c}", "\u{61}"])
[INFO] [stderr] 2057 | |     ];
[INFO] [stderr]      | |______^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `nodes`
[INFO] [stderr]    --> src/internals/mod.rs:446:5
[INFO] [stderr]     |
[INFO] [stderr] 446 |     fn nodes(&self) -> Nodes {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Nodes`
[INFO] [stderr]    --> src/internals/mod.rs:645:1
[INFO] [stderr]     |
[INFO] [stderr] 645 | struct Nodes<'a>(Vec<&'a Node>);
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]   --> src/test/mod.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | #[ignore]
[INFO] [stderr]    | ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_attributes)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]   --> src/test/mod.rs:41:1
[INFO] [stderr]    |
[INFO] [stderr] 41 | #[ignore]
[INFO] [stderr]    | ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]    --> src/test/mod.rs:114:1
[INFO] [stderr]     |
[INFO] [stderr] 114 | #[should_panic]
[INFO] [stderr]     | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]    --> src/test/mod.rs:124:5
[INFO] [stderr]     |
[INFO] [stderr] 124 |     #[ignore]
[INFO] [stderr]     |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]    --> src/test/mod.rs:130:5
[INFO] [stderr]     |
[INFO] [stderr] 130 |     #[ignore]
[INFO] [stderr]     |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]    --> src/test/mod.rs:136:5
[INFO] [stderr]     |
[INFO] [stderr] 136 |     #[ignore]
[INFO] [stderr]     |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]    --> src/test/mod.rs:445:5
[INFO] [stderr]     |
[INFO] [stderr] 445 |     #[ignore]
[INFO] [stderr]     |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]    --> src/test/mod.rs:461:5
[INFO] [stderr]     |
[INFO] [stderr] 461 |     #[ignore]
[INFO] [stderr]     |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: module `FromIterator` should have a snake case name
[INFO] [stderr]    --> src/test/mod.rs:614:9
[INFO] [stderr]     |
[INFO] [stderr] 614 |     mod FromIterator {
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: convert the identifier to snake case: `from_iterator`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.80s
[INFO] running `"docker" "inspect" "efcb46b58c15ea2ef46830a49ac4d9af007e6f0124fb3142cafc3ddc4af43771"`
[INFO] running `"docker" "rm" "-f" "efcb46b58c15ea2ef46830a49ac4d9af007e6f0124fb3142cafc3ddc4af43771"`
[INFO] [stdout] efcb46b58c15ea2ef46830a49ac4d9af007e6f0124fb3142cafc3ddc4af43771