[INFO] updating cached repository j16r/virtual68
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/j16r/virtual68
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/j16r/virtual68" "work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/j16r/virtual68"`
[INFO] [stderr] Cloning into 'work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/j16r/virtual68'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/j16r/virtual68" "work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/j16r/virtual68"`
[INFO] [stderr] Cloning into 'work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/j16r/virtual68'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d6049874ca9e2565cb666b61d6c9f5cf01f8994e
[INFO] sha for GitHub repo j16r/virtual68: d6049874ca9e2565cb666b61d6c9f5cf01f8994e
[INFO] validating manifest of j16r/virtual68 on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of j16r/virtual68 on toolchain try#74092351c05ae61047b2be02024415546595e974
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+74092351c05ae61047b2be02024415546595e974-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing j16r/virtual68
[INFO] finished frobbing j16r/virtual68
[INFO] frobbed toml for j16r/virtual68 written to work/ex/pr-60174/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/j16r/virtual68/Cargo.toml
[INFO] started frobbing j16r/virtual68
[INFO] finished frobbing j16r/virtual68
[INFO] frobbed toml for j16r/virtual68 written to work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/j16r/virtual68/Cargo.toml
[INFO] crate j16r/virtual68 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+74092351c05ae61047b2be02024415546595e974-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking j16r/virtual68 against try#74092351c05ae61047b2be02024415546595e974 for pr-60174
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60174/worker-1/try#74092351c05ae61047b2be02024415546595e974:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60174/sources/try#74092351c05ae61047b2be02024415546595e974/gh/j16r/virtual68:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+74092351c05ae61047b2be02024415546595e974-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 3488731cd48cd716ab4f49323745b84f1d693ac7b0d166b4d8279e443e21c8a0
[INFO] running `"docker" "start" "-a" "3488731cd48cd716ab4f49323745b84f1d693ac7b0d166b4d8279e443e21c8a0"`
[INFO] [stderr]     Checking combine v1.3.0
[INFO] [stderr]     Checking virtual68 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/linker.rs:95:21
[INFO] [stderr]    |
[INFO] [stderr] 95 |                 let mut opcode = opcode(command);
[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/linker.rs:116:21
[INFO] [stderr]     |
[INFO] [stderr] 116 |                 let mut opcode = opcode(command);
[INFO] [stderr]     |                     ----^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/linker.rs:158:13
[INFO] [stderr]     |
[INFO] [stderr] 158 |         let mut program = Program::new();
[INFO] [stderr]     |             ----^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/linker.rs:95:21
[INFO] [stderr]    |
[INFO] [stderr] 95 |                 let mut opcode = opcode(command);
[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/linker.rs:116:21
[INFO] [stderr]     |
[INFO] [stderr] 116 |                 let mut opcode = opcode(command);
[INFO] [stderr]     |                     ----^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_decimal`
[INFO] [stderr]  --> src/grammar.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn is_decimal(input: &str) -> bool {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_decimal`
[INFO] [stderr]  --> src/grammar.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn is_decimal(input: &str) -> bool {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.14s
[INFO] running `"docker" "inspect" "3488731cd48cd716ab4f49323745b84f1d693ac7b0d166b4d8279e443e21c8a0"`
[INFO] running `"docker" "rm" "-f" "3488731cd48cd716ab4f49323745b84f1d693ac7b0d166b4d8279e443e21c8a0"`
[INFO] [stdout] 3488731cd48cd716ab4f49323745b84f1d693ac7b0d166b4d8279e443e21c8a0