[INFO] updating cached repository DomParfitt/rex
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/DomParfitt/rex
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/DomParfitt/rex" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/DomParfitt/rex"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/DomParfitt/rex'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/DomParfitt/rex" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/DomParfitt/rex"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/DomParfitt/rex'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 81a4dd2ca4d3cfbb8d07fd9c6849062f8fc4d4eb
[INFO] sha for GitHub repo DomParfitt/rex: 81a4dd2ca4d3cfbb8d07fd9c6849062f8fc4d4eb
[INFO] validating manifest of DomParfitt/rex on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of DomParfitt/rex on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing DomParfitt/rex
[INFO] finished frobbing DomParfitt/rex
[INFO] frobbed toml for DomParfitt/rex written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/DomParfitt/rex/Cargo.toml
[INFO] started frobbing DomParfitt/rex
[INFO] finished frobbing DomParfitt/rex
[INFO] frobbed toml for DomParfitt/rex written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/DomParfitt/rex/Cargo.toml
[INFO] crate DomParfitt/rex has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing DomParfitt/rex against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-4/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/DomParfitt/rex:/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=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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "build" "--frozen"`
[INFO] [stdout] 21b0322a640b447e59233cbc64101a4b6fa9ad38128795adf4646291e9d2acfd
[INFO] running `"docker" "start" "-a" "21b0322a640b447e59233cbc64101a4b6fa9ad38128795adf4646291e9d2acfd"`
[INFO] [stderr]    Compiling rex v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `lexer::token::TokenType::Digit`
[INFO] [stderr]  --> src/lexer/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use lexer::token::TokenType::Digit;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TokenType`
[INFO] [stderr]  --> src/lexer/mod.rs:2:27
[INFO] [stderr]   |
[INFO] [stderr] 2 | use lexer::token::{Token, TokenType};
[INFO] [stderr]   |                           ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Whitespace`
[INFO] [stderr]  --> src/lexer/token/mod.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Whitespace,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `OpenBrace`
[INFO] [stderr]   --> src/lexer/token/mod.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     OpenBrace,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CloseBrace`
[INFO] [stderr]   --> src/lexer/token/mod.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     CloseBrace,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Dash`
[INFO] [stderr]   --> src/lexer/token/mod.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Dash,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Dot`
[INFO] [stderr]   --> src/lexer/token/mod.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Dot,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Wildcard`
[INFO] [stderr]   --> src/lexer/token/mod.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Wildcard,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_letter`
[INFO] [stderr]   --> src/lexer/token/mod.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn is_letter(ch: char) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.59s
[INFO] running `"docker" "inspect" "21b0322a640b447e59233cbc64101a4b6fa9ad38128795adf4646291e9d2acfd"`
[INFO] running `"docker" "rm" "-f" "21b0322a640b447e59233cbc64101a4b6fa9ad38128795adf4646291e9d2acfd"`
[INFO] [stdout] 21b0322a640b447e59233cbc64101a4b6fa9ad38128795adf4646291e9d2acfd
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-4/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/DomParfitt/rex:/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=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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 20701055cebb2ee262e44314779d0e78b07d5a904dc91eae011aee55c9d55bfa
[INFO] running `"docker" "start" "-a" "20701055cebb2ee262e44314779d0e78b07d5a904dc91eae011aee55c9d55bfa"`
[INFO] [stderr]    Compiling rex v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `lexer::token::TokenType::Digit`
[INFO] [stderr]  --> src/lexer/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use lexer::token::TokenType::Digit;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TokenType`
[INFO] [stderr]  --> src/lexer/mod.rs:2:27
[INFO] [stderr]   |
[INFO] [stderr] 2 | use lexer::token::{Token, TokenType};
[INFO] [stderr]   |                           ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Whitespace`
[INFO] [stderr]  --> src/lexer/token/mod.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     Whitespace,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `OpenBrace`
[INFO] [stderr]   --> src/lexer/token/mod.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     OpenBrace,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CloseBrace`
[INFO] [stderr]   --> src/lexer/token/mod.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     CloseBrace,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Dash`
[INFO] [stderr]   --> src/lexer/token/mod.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Dash,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Dot`
[INFO] [stderr]   --> src/lexer/token/mod.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Dot,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Wildcard`
[INFO] [stderr]   --> src/lexer/token/mod.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Wildcard,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_letter`
[INFO] [stderr]   --> src/lexer/token/mod.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     fn is_letter(ch: char) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `"docker" "inspect" "20701055cebb2ee262e44314779d0e78b07d5a904dc91eae011aee55c9d55bfa"`
[INFO] running `"docker" "rm" "-f" "20701055cebb2ee262e44314779d0e78b07d5a904dc91eae011aee55c9d55bfa"`
[INFO] [stdout] 20701055cebb2ee262e44314779d0e78b07d5a904dc91eae011aee55c9d55bfa
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-4/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/DomParfitt/rex:/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=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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen"`
[INFO] [stdout] 202fc2167ea06514d8c8efd64308a64c447da8f2b21bbb22559c43cb5c71442a
[INFO] running `"docker" "start" "-a" "202fc2167ea06514d8c8efd64308a64c447da8f2b21bbb22559c43cb5c71442a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rex-743cd58ecb52fe32
[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" "202fc2167ea06514d8c8efd64308a64c447da8f2b21bbb22559c43cb5c71442a"`
[INFO] running `"docker" "rm" "-f" "202fc2167ea06514d8c8efd64308a64c447da8f2b21bbb22559c43cb5c71442a"`
[INFO] [stdout] 202fc2167ea06514d8c8efd64308a64c447da8f2b21bbb22559c43cb5c71442a