[INFO] updating cached repository JerTH/Violet
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/JerTH/Violet
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/JerTH/Violet" "work/ex/beta-1.38-1/sources/1.37.0/gh/JerTH/Violet"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/JerTH/Violet'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/JerTH/Violet" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/JerTH/Violet"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/JerTH/Violet'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6fa3b0f6f763f272c3c7cf8c8419e07bb17103b7
[INFO] sha for GitHub repo JerTH/Violet: 6fa3b0f6f763f272c3c7cf8c8419e07bb17103b7
[INFO] validating manifest of JerTH/Violet 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 JerTH/Violet 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 JerTH/Violet
[INFO] finished frobbing JerTH/Violet
[INFO] frobbed toml for JerTH/Violet written to work/ex/beta-1.38-1/sources/1.37.0/gh/JerTH/Violet/Cargo.toml
[INFO] started frobbing JerTH/Violet
[INFO] finished frobbing JerTH/Violet
[INFO] frobbed toml for JerTH/Violet written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/JerTH/Violet/Cargo.toml
[INFO] crate JerTH/Violet 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing JerTH/Violet against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/JerTH/Violet:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] a2ea9cca93732a520f0a312bf8d8c9f0de58d58d6baccbcb6f1c2ddd899b4d02
[INFO] running `"docker" "start" "-a" "a2ea9cca93732a520f0a312bf8d8c9f0de58d58d6baccbcb6f1c2ddd899b4d02"`
[INFO] [stderr]    Compiling violet v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `ast`
[INFO] [stderr]   --> src/parser.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     ast: VtAst,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `op_stack`
[INFO] [stderr]   --> src/parser.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     op_stack: VecDeque<VtToken>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_expr`
[INFO] [stderr]    --> src/parser.rs:216:1
[INFO] [stderr]     |
[INFO] [stderr] 216 | fn parse_expr(state: &mut VtParser) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `violet::parser::*`
[INFO] [stderr]  --> src/bin/violet.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use violet::parser::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.40s
[INFO] running `"docker" "inspect" "a2ea9cca93732a520f0a312bf8d8c9f0de58d58d6baccbcb6f1c2ddd899b4d02"`
[INFO] running `"docker" "rm" "-f" "a2ea9cca93732a520f0a312bf8d8c9f0de58d58d6baccbcb6f1c2ddd899b4d02"`
[INFO] [stdout] a2ea9cca93732a520f0a312bf8d8c9f0de58d58d6baccbcb6f1c2ddd899b4d02
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/JerTH/Violet:/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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] ae01899dcd6dc5c523e49066be8e22bf49096cf737fb66b68b3d42c8914aeb87
[INFO] running `"docker" "start" "-a" "ae01899dcd6dc5c523e49066be8e22bf49096cf737fb66b68b3d42c8914aeb87"`
[INFO] [stderr]    Compiling violet v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `violet::parser::*`
[INFO] [stderr]  --> src/bin/violet.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use violet::parser::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `ast`
[INFO] [stderr]   --> src/parser.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 |     ast: VtAst,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `op_stack`
[INFO] [stderr]   --> src/parser.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     op_stack: VecDeque<VtToken>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_expr`
[INFO] [stderr]    --> src/parser.rs:216:1
[INFO] [stderr]     |
[INFO] [stderr] 216 | fn parse_expr(state: &mut VtParser) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.00s
[INFO] running `"docker" "inspect" "ae01899dcd6dc5c523e49066be8e22bf49096cf737fb66b68b3d42c8914aeb87"`
[INFO] running `"docker" "rm" "-f" "ae01899dcd6dc5c523e49066be8e22bf49096cf737fb66b68b3d42c8914aeb87"`
[INFO] [stdout] ae01899dcd6dc5c523e49066be8e22bf49096cf737fb66b68b3d42c8914aeb87
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/JerTH/Violet:/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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] b94c762f1a6a75ae525f9c107adef5e6fceaef36c12093924165a2914e6c6192
[INFO] running `"docker" "start" "-a" "b94c762f1a6a75ae525f9c107adef5e6fceaef36c12093924165a2914e6c6192"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/violet-17b5282f89bcd2ba
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test tests::lexer_tests::lex_simple_source ... ok
[INFO] [stdout] test tests::lexer_tests::lex_mixed_numbers ... ok
[INFO] [stdout] test tests::lexer_tests::lex_keywords ... ok
[INFO] [stdout] test tests::lexer_tests::lex_floats ... ok
[INFO] [stdout] test tests::lexer_tests::lex_complex_source ... ok
[INFO] [stdout] test tests::lexer_tests::lex_single_integer ... ok
[INFO] [stdout] test tests::lexer_tests::lex_string_literal ... ok
[INFO] [stdout] test tests::lexer_tests::lex_char_literal ... ok
[INFO] [stdout] test tests::parser_tests::manually_construct_simple_tree ... ok
[INFO] [stdout] test tests::parser_tests::node_handle_deref ... ok
[INFO] [stdout] test tests::parser_tests::node_handle_ref_count ... ok
[INFO] [stdout] test tests::lexer_tests::lex_loop_source ... ok
[INFO] [stdout] test tests::lexer_tests::lex_empty_source ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/violet-8b4739128e4f0fd7
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests violet
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "b94c762f1a6a75ae525f9c107adef5e6fceaef36c12093924165a2914e6c6192"`
[INFO] running `"docker" "rm" "-f" "b94c762f1a6a75ae525f9c107adef5e6fceaef36c12093924165a2914e6c6192"`
[INFO] [stdout] b94c762f1a6a75ae525f9c107adef5e6fceaef36c12093924165a2914e6c6192