[INFO] crate hamlrs 0.4.2 is already in cache
[INFO] extracting crate hamlrs 0.4.2 into work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/reg/hamlrs/0.4.2
[INFO] extracting crate hamlrs 0.4.2 into work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/reg/hamlrs/0.4.2
[INFO] validating manifest of hamlrs-0.4.2 on toolchain master#6ea4036cd20a4b1ab1d56e555108c21735ff6946
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of hamlrs-0.4.2 on toolchain try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing hamlrs-0.4.2
[INFO] finished frobbing hamlrs-0.4.2
[INFO] frobbed toml for hamlrs-0.4.2 written to work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/reg/hamlrs/0.4.2/Cargo.toml
[INFO] started frobbing hamlrs-0.4.2
[INFO] finished frobbing hamlrs-0.4.2
[INFO] frobbed toml for hamlrs-0.4.2 written to work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/reg/hamlrs/0.4.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "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" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking hamlrs-0.4.2 against master#6ea4036cd20a4b1ab1d56e555108c21735ff6946 for pr-62181
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62181/worker-1/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/reg/hamlrs/0.4.2:/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" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c4c8b1f9ba8d06c8b8578fb70fb9d66cad86eea651b081c2abe342f01e02fc8d
[INFO] running `"docker" "start" "-a" "c4c8b1f9ba8d06c8b8578fb70fb9d66cad86eea651b081c2abe342f01e02fc8d"`
[INFO] [stderr]     Checking hamlrs v0.4.2 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `token` is never read
[INFO] [stderr]   --> src/parser.rs:71:17
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let mut token: Option<&Token> = None;
[INFO] [stderr]    |                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `class` is never read
[INFO] [stderr]   --> src/parser.rs:86:33
[INFO] [stderr]    |
[INFO] [stderr] 86 |                         let mut class = String::new();
[INFO] [stderr]    |                                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `id` is never read
[INFO] [stderr]    --> src/parser.rs:101:33
[INFO] [stderr]     |
[INFO] [stderr] 101 |                         let mut id = String::new();
[INFO] [stderr]     |                                 ^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `value` is never read
[INFO] [stderr]   --> src/scanner.rs:68:25
[INFO] [stderr]    |
[INFO] [stderr] 68 |                 let mut value: Option<Token> = None;
[INFO] [stderr]    |                         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `token` is never read
[INFO] [stderr]   --> src/parser.rs:71:17
[INFO] [stderr]    |
[INFO] [stderr] 71 |         let mut token: Option<&Token> = None;
[INFO] [stderr]    |                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `class` is never read
[INFO] [stderr]   --> src/parser.rs:86:33
[INFO] [stderr]    |
[INFO] [stderr] 86 |                         let mut class = String::new();
[INFO] [stderr]    |                                 ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `id` is never read
[INFO] [stderr]    --> src/parser.rs:101:33
[INFO] [stderr]     |
[INFO] [stderr] 101 |                         let mut id = String::new();
[INFO] [stderr]     |                                 ^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `value` is never read
[INFO] [stderr]   --> src/scanner.rs:68:25
[INFO] [stderr]    |
[INFO] [stderr] 68 |                 let mut value: Option<Token> = None;
[INFO] [stderr]    |                         ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.51s
[INFO] running `"docker" "inspect" "c4c8b1f9ba8d06c8b8578fb70fb9d66cad86eea651b081c2abe342f01e02fc8d"`
[INFO] running `"docker" "rm" "-f" "c4c8b1f9ba8d06c8b8578fb70fb9d66cad86eea651b081c2abe342f01e02fc8d"`
[INFO] [stdout] c4c8b1f9ba8d06c8b8578fb70fb9d66cad86eea651b081c2abe342f01e02fc8d