[INFO] crate kravl-parser 0.3.3 is already in cache
[INFO] extracting crate kravl-parser 0.3.3 into work/ex/beta-1.38-1/sources/1.37.0/reg/kravl-parser/0.3.3
[INFO] extracting crate kravl-parser 0.3.3 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/kravl-parser/0.3.3
[INFO] validating manifest of kravl-parser-0.3.3 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 kravl-parser-0.3.3 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 kravl-parser-0.3.3
[INFO] finished frobbing kravl-parser-0.3.3
[INFO] frobbed toml for kravl-parser-0.3.3 written to work/ex/beta-1.38-1/sources/1.37.0/reg/kravl-parser/0.3.3/Cargo.toml
[INFO] started frobbing kravl-parser-0.3.3
[INFO] finished frobbing kravl-parser-0.3.3
[INFO] frobbed toml for kravl-parser-0.3.3 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/kravl-parser/0.3.3/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing kravl-parser-0.3.3 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-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/kravl-parser/0.3.3:/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] 4572d566209b9c48bd3e2bd5d344d7ebd87d796ee16a24717ca87df888a7ae05
[INFO] running `"docker" "start" "-a" "4572d566209b9c48bd3e2bd5d344d7ebd87d796ee16a24717ca87df888a7ae05"`
[INFO] [stderr]    Compiling kravl-parser v0.3.3 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `"docker" "inspect" "4572d566209b9c48bd3e2bd5d344d7ebd87d796ee16a24717ca87df888a7ae05"`
[INFO] running `"docker" "rm" "-f" "4572d566209b9c48bd3e2bd5d344d7ebd87d796ee16a24717ca87df888a7ae05"`
[INFO] [stdout] 4572d566209b9c48bd3e2bd5d344d7ebd87d796ee16a24717ca87df888a7ae05
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/kravl-parser/0.3.3:/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] df86490c2f1e426011ddb307b07322d8137161209046bb62a07762d98e210747
[INFO] running `"docker" "start" "-a" "df86490c2f1e426011ddb307b07322d8137161209046bb62a07762d98e210747"`
[INFO] [stderr]    Compiling kravl-parser v0.3.3 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `stack`
[INFO] [stderr]   --> src/syntax/mod.rs:46:13
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let stack = parser.parse_full();
[INFO] [stderr]    |             ^^^^^ help: consider prefixing with an underscore: `_stack`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/syntax/mod.rs:13:9
[INFO] [stderr]    |
[INFO] [stderr] 13 | /         lexer.tokenize(String::from("
[INFO] [stderr] 14 | |             define fib_sum(a -> int, b -> int) -> int
[INFO] [stderr] 15 | |                 if a + b <= 2
[INFO] [stderr] 16 | |                     return c
[INFO] [stderr] ...  |
[INFO] [stderr] 20 | |             end
[INFO] [stderr] 21 | |         "));
[INFO] [stderr]    | |____________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/syntax/mod.rs:33:9
[INFO] [stderr]    |
[INFO] [stderr] 33 | /         lexer.tokenize(String::from("
[INFO] [stderr] 34 | |             foo = \"hey aywa\"
[INFO] [stderr] 35 | |             foo = 22.2
[INFO] [stderr] 36 | |
[INFO] [stderr] ...  |
[INFO] [stderr] 41 | |             sum = 1337 - 2 - 10.2 * 100
[INFO] [stderr] 42 | |         "));
[INFO] [stderr]    | |____________^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.55s
[INFO] running `"docker" "inspect" "df86490c2f1e426011ddb307b07322d8137161209046bb62a07762d98e210747"`
[INFO] running `"docker" "rm" "-f" "df86490c2f1e426011ddb307b07322d8137161209046bb62a07762d98e210747"`
[INFO] [stdout] df86490c2f1e426011ddb307b07322d8137161209046bb62a07762d98e210747
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/kravl-parser/0.3.3:/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] 167f725cf834aab8736da09f6aecbb4ed6f1dd72667f356b3201faf078645007
[INFO] running `"docker" "start" "-a" "167f725cf834aab8736da09f6aecbb4ed6f1dd72667f356b3201faf078645007"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/kravl_parser-d0876e7aeb3dff1a
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test syntax::tests::parser_tokenize ... ok
[INFO] [stdout] test syntax::tests::lexer_tokenize ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests kravl_parser
[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" "167f725cf834aab8736da09f6aecbb4ed6f1dd72667f356b3201faf078645007"`
[INFO] running `"docker" "rm" "-f" "167f725cf834aab8736da09f6aecbb4ed6f1dd72667f356b3201faf078645007"`
[INFO] [stdout] 167f725cf834aab8736da09f6aecbb4ed6f1dd72667f356b3201faf078645007