[INFO] updating cached repository Kylebrown9/Slang
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Kylebrown9/Slang
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Kylebrown9/Slang" "work/ex/beta-1.38-1/sources/1.37.0/gh/Kylebrown9/Slang"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Kylebrown9/Slang'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Kylebrown9/Slang" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Kylebrown9/Slang"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Kylebrown9/Slang'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] dd446e019b457da64bd383db3ea2f9df2b0ee1cd
[INFO] sha for GitHub repo Kylebrown9/Slang: dd446e019b457da64bd383db3ea2f9df2b0ee1cd
[INFO] validating manifest of Kylebrown9/Slang on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Kylebrown9/Slang on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Kylebrown9/Slang
[INFO] finished frobbing Kylebrown9/Slang
[INFO] frobbed toml for Kylebrown9/Slang written to work/ex/beta-1.38-1/sources/1.37.0/gh/Kylebrown9/Slang/Cargo.toml
[INFO] started frobbing Kylebrown9/Slang
[INFO] finished frobbing Kylebrown9/Slang
[INFO] frobbed toml for Kylebrown9/Slang written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Kylebrown9/Slang/Cargo.toml
[INFO] crate Kylebrown9/Slang already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Kylebrown9/Slang against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Kylebrown9/Slang:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] f967589d823d8bb7c043dba7200ffce77f796ab15ea84ad0552a91ae425c80b8
[INFO] running `"docker" "start" "-a" "f967589d823d8bb7c043dba7200ffce77f796ab15ea84ad0552a91ae425c80b8"`
[INFO] [stderr]    Compiling slang v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/io_helpers.rs:22:19
[INFO] [stderr]    |
[INFO] [stderr] 22 |     contents: Box<Write>
[INFO] [stderr]    |                   ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/io_helpers.rs:33:36
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub fn simplify_output(writer: Box<Write>) -> SimpleOutput {
[INFO] [stderr]    |                                    ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:73:25
[INFO] [stderr]    |
[INFO] [stderr] 73 |     let out_stream: Box<Write> = match task.out_file {
[INFO] [stderr]    |                         ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `map`
[INFO] [stderr]    --> src/trie/hash.rs:165:44
[INFO] [stderr]     |
[INFO] [stderr] 165 |                 trie: HashTrie::Standard { map, .. }, 
[INFO] [stderr]     |                                            ^^^ help: consider prefixing with an underscore: `_map`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `next_id`
[INFO] [stderr]    --> src/trie/hash.rs:320:49
[INFO] [stderr]     |
[INFO] [stderr] 320 |                 trie: HashTrie::Standard { map, next_id }, 
[INFO] [stderr]     |                                                 ^^^^^^^ help: consider prefixing with an underscore: `_next_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr]   --> src/macro_def.rs:52:35
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn read_macros(&mut self, tokens: &[Token]) {
[INFO] [stderr]    |                                   ^^^^^^ help: consider prefixing with an underscore: `_tokens`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr]   --> src/macro_def.rs:56:30
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn read_macro(&mut self, tokens: &[Token]) {
[INFO] [stderr]    |                              ^^^^^^ help: consider prefixing with an underscore: `_tokens`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `trie_root`
[INFO] [stderr]   --> src/macro_def.rs:61:13
[INFO] [stderr]    |
[INFO] [stderr] 61 |         let trie_root = self.contents.as_view();
[INFO] [stderr]    |             ^^^^^^^^^ help: consider prefixing with an underscore: `_trie_root`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `remaining`
[INFO] [stderr]   --> src/macro_def.rs:63:17
[INFO] [stderr]    |
[INFO] [stderr] 63 |         let mut remaining = input;
[INFO] [stderr]    |                 ^^^^^^^^^ help: consider prefixing with an underscore: `_remaining`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `out_stream`
[INFO] [stderr]   --> src/macro_def.rs:60:50
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn expand_tokens(&self, input: &[Token], out_stream: &mut SimpleOutput) -> Result<()> {
[INFO] [stderr]    |                                                  ^^^^^^^^^^ help: consider prefixing with an underscore: `_out_stream`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/trie/hash.rs:346:13
[INFO] [stderr]     |
[INFO] [stderr] 346 |         let mut next_edge;
[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/macro_def.rs:63:13
[INFO] [stderr]    |
[INFO] [stderr] 63 |         let mut remaining = input;
[INFO] [stderr]    |             ----^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Var`
[INFO] [stderr]   --> src/macro_def.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Var,
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Token`
[INFO] [stderr]   --> src/macro_def.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | /     Token {
[INFO] [stderr] 18 | |         value: String
[INFO] [stderr] 19 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `BlockVar`
[INFO] [stderr]   --> src/macro_def.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | /     BlockVar {
[INFO] [stderr] 22 | |         block_delim: BlockDelimiter
[INFO] [stderr] 23 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SquareBracket`
[INFO] [stderr]   --> src/macro_def.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     SquareBracket,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CurlyBracket`
[INFO] [stderr]   --> src/macro_def.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     CurlyBracket,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Parenthesis`
[INFO] [stderr]   --> src/macro_def.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     Parenthesis
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Text`
[INFO] [stderr]   --> src/macro_def.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 | /     Text {
[INFO] [stderr] 38 | |         data: String
[INFO] [stderr] 39 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Var`
[INFO] [stderr]   --> src/macro_def.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 | /     Var {
[INFO] [stderr] 41 | |         index: u8
[INFO] [stderr] 42 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read_macro`
[INFO] [stderr]   --> src/macro_def.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn read_macro(&mut self, tokens: &[Token]) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `contents`
[INFO] [stderr]   --> src/io_helpers.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     contents: Box<Write>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write`
[INFO] [stderr]   --> src/io_helpers.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn write(&mut self, val: &str) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.34s
[INFO] running `"docker" "inspect" "f967589d823d8bb7c043dba7200ffce77f796ab15ea84ad0552a91ae425c80b8"`
[INFO] running `"docker" "rm" "-f" "f967589d823d8bb7c043dba7200ffce77f796ab15ea84ad0552a91ae425c80b8"`
[INFO] [stdout] f967589d823d8bb7c043dba7200ffce77f796ab15ea84ad0552a91ae425c80b8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Kylebrown9/Slang:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] c25654b442dc72a56c64daf0f1d676a61f45358460f82d8b5b14850f8837b815
[INFO] running `"docker" "start" "-a" "c25654b442dc72a56c64daf0f1d676a61f45358460f82d8b5b14850f8837b815"`
[INFO] [stderr]    Compiling slang v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/io_helpers.rs:22:19
[INFO] [stderr]    |
[INFO] [stderr] 22 |     contents: Box<Write>
[INFO] [stderr]    |                   ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/io_helpers.rs:33:36
[INFO] [stderr]    |
[INFO] [stderr] 33 | pub fn simplify_output(writer: Box<Write>) -> SimpleOutput {
[INFO] [stderr]    |                                    ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:73:25
[INFO] [stderr]    |
[INFO] [stderr] 73 |     let out_stream: Box<Write> = match task.out_file {
[INFO] [stderr]    |                         ^^^^^ help: use `dyn`: `dyn Write`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `map`
[INFO] [stderr]    --> src/trie/hash.rs:165:44
[INFO] [stderr]     |
[INFO] [stderr] 165 |                 trie: HashTrie::Standard { map, .. }, 
[INFO] [stderr]     |                                            ^^^ help: consider prefixing with an underscore: `_map`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `next_id`
[INFO] [stderr]    --> src/trie/hash.rs:320:49
[INFO] [stderr]     |
[INFO] [stderr] 320 |                 trie: HashTrie::Standard { map, next_id }, 
[INFO] [stderr]     |                                                 ^^^^^^^ help: consider prefixing with an underscore: `_next_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr]   --> src/macro_def.rs:52:35
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn read_macros(&mut self, tokens: &[Token]) {
[INFO] [stderr]    |                                   ^^^^^^ help: consider prefixing with an underscore: `_tokens`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr]   --> src/macro_def.rs:56:30
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn read_macro(&mut self, tokens: &[Token]) {
[INFO] [stderr]    |                              ^^^^^^ help: consider prefixing with an underscore: `_tokens`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `trie_root`
[INFO] [stderr]   --> src/macro_def.rs:61:13
[INFO] [stderr]    |
[INFO] [stderr] 61 |         let trie_root = self.contents.as_view();
[INFO] [stderr]    |             ^^^^^^^^^ help: consider prefixing with an underscore: `_trie_root`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `remaining`
[INFO] [stderr]   --> src/macro_def.rs:63:17
[INFO] [stderr]    |
[INFO] [stderr] 63 |         let mut remaining = input;
[INFO] [stderr]    |                 ^^^^^^^^^ help: consider prefixing with an underscore: `_remaining`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `out_stream`
[INFO] [stderr]   --> src/macro_def.rs:60:50
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn expand_tokens(&self, input: &[Token], out_stream: &mut SimpleOutput) -> Result<()> {
[INFO] [stderr]    |                                                  ^^^^^^^^^^ help: consider prefixing with an underscore: `_out_stream`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/trie/hash.rs:346:13
[INFO] [stderr]     |
[INFO] [stderr] 346 |         let mut next_edge;
[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/macro_def.rs:63:13
[INFO] [stderr]    |
[INFO] [stderr] 63 |         let mut remaining = input;
[INFO] [stderr]    |             ----^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Var`
[INFO] [stderr]   --> src/macro_def.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Var,
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Token`
[INFO] [stderr]   --> src/macro_def.rs:17:5
[INFO] [stderr]    |
[INFO] [stderr] 17 | /     Token {
[INFO] [stderr] 18 | |         value: String
[INFO] [stderr] 19 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `BlockVar`
[INFO] [stderr]   --> src/macro_def.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | /     BlockVar {
[INFO] [stderr] 22 | |         block_delim: BlockDelimiter
[INFO] [stderr] 23 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SquareBracket`
[INFO] [stderr]   --> src/macro_def.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     SquareBracket,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CurlyBracket`
[INFO] [stderr]   --> src/macro_def.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     CurlyBracket,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Parenthesis`
[INFO] [stderr]   --> src/macro_def.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     Parenthesis
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Text`
[INFO] [stderr]   --> src/macro_def.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 37 | /     Text {
[INFO] [stderr] 38 | |         data: String
[INFO] [stderr] 39 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Var`
[INFO] [stderr]   --> src/macro_def.rs:40:5
[INFO] [stderr]    |
[INFO] [stderr] 40 | /     Var {
[INFO] [stderr] 41 | |         index: u8
[INFO] [stderr] 42 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read_macro`
[INFO] [stderr]   --> src/macro_def.rs:56:5
[INFO] [stderr]    |
[INFO] [stderr] 56 |     fn read_macro(&mut self, tokens: &[Token]) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `contents`
[INFO] [stderr]   --> src/io_helpers.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     contents: Box<Write>
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write`
[INFO] [stderr]   --> src/io_helpers.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn write(&mut self, val: &str) -> Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.89s
[INFO] running `"docker" "inspect" "c25654b442dc72a56c64daf0f1d676a61f45358460f82d8b5b14850f8837b815"`
[INFO] running `"docker" "rm" "-f" "c25654b442dc72a56c64daf0f1d676a61f45358460f82d8b5b14850f8837b815"`
[INFO] [stdout] c25654b442dc72a56c64daf0f1d676a61f45358460f82d8b5b14850f8837b815
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Kylebrown9/Slang:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 19125c83b6252be58d4711074c22a271664e0fc9ee9ecbd8e893ec6aa553b2bc
[INFO] running `"docker" "start" "-a" "19125c83b6252be58d4711074c22a271664e0fc9ee9ecbd8e893ec6aa553b2bc"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/slang-f17b055c889aa57b
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test trie::hash::test::insert_get ... ok
[INFO] [stdout] test tokenizer::tests::function_like ... ok
[INFO] [stdout] test tokenizer::tests::preserves_suffixes ... ok
[INFO] [stdout] test tokenizer::tests::keeps_singletons_separate ... ok
[INFO] [stdout] test trie::hash::test::insert_insert_get ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "19125c83b6252be58d4711074c22a271664e0fc9ee9ecbd8e893ec6aa553b2bc"`
[INFO] running `"docker" "rm" "-f" "19125c83b6252be58d4711074c22a271664e0fc9ee9ecbd8e893ec6aa553b2bc"`
[INFO] [stdout] 19125c83b6252be58d4711074c22a271664e0fc9ee9ecbd8e893ec6aa553b2bc