[INFO] updating cached repository ExcaliburZero/jvm-class-file-parser
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ExcaliburZero/jvm-class-file-parser
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ExcaliburZero/jvm-class-file-parser" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/ExcaliburZero/jvm-class-file-parser"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/ExcaliburZero/jvm-class-file-parser'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ExcaliburZero/jvm-class-file-parser" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/ExcaliburZero/jvm-class-file-parser"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/ExcaliburZero/jvm-class-file-parser'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 612bc50bcf238a451b8beb6b957f714a51d1602c
[INFO] sha for GitHub repo ExcaliburZero/jvm-class-file-parser: 612bc50bcf238a451b8beb6b957f714a51d1602c
[INFO] validating manifest of ExcaliburZero/jvm-class-file-parser on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ExcaliburZero/jvm-class-file-parser on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ExcaliburZero/jvm-class-file-parser
[INFO] finished frobbing ExcaliburZero/jvm-class-file-parser
[INFO] frobbed toml for ExcaliburZero/jvm-class-file-parser written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/ExcaliburZero/jvm-class-file-parser/Cargo.toml
[INFO] started frobbing ExcaliburZero/jvm-class-file-parser
[INFO] finished frobbing ExcaliburZero/jvm-class-file-parser
[INFO] frobbed toml for ExcaliburZero/jvm-class-file-parser written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/ExcaliburZero/jvm-class-file-parser/Cargo.toml
[INFO] crate ExcaliburZero/jvm-class-file-parser already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ExcaliburZero/jvm-class-file-parser against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-4/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/ExcaliburZero/jvm-class-file-parser:/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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 18a273b5667148a8350b9de3bb9adef45eb9ad6372caed242a8a6e18b2910e6b
[INFO] running `"docker" "start" "-a" "18a273b5667148a8350b9de3bb9adef45eb9ad6372caed242a8a6e18b2910e6b"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking jvm-class-file-parser v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: constant item is never used: `CONSTANT_TAG_FIELDREF`
[INFO] [stderr]   --> src/writing.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | const CONSTANT_TAG_FIELDREF: u8 = 9;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(try_from)]
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `CONSTANT_TAG_FIELDREF`
[INFO] [stderr]   --> src/writing.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | const CONSTANT_TAG_FIELDREF: u8 = 9;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `try_from` has been stable since 1.34.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(try_from)]
[INFO] [stderr]   |            ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `class_file`
[INFO] [stderr]    --> src/main.rs:221:19
[INFO] [stderr]     |
[INFO] [stderr] 221 | fn print_bytecode(class_file: &ClassFile, code: &[(usize, Bytecode)]) {
[INFO] [stderr]     |                   ^^^^^^^^^^ help: consider prefixing with an underscore: `_class_file`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `class_file`
[INFO] [stderr]    --> src/main.rs:221:19
[INFO] [stderr]     |
[INFO] [stderr] 221 | fn print_bytecode(class_file: &ClassFile, code: &[(usize, Bytecode)]) {
[INFO] [stderr]     |                   ^^^^^^^^^^ help: consider prefixing with an underscore: `_class_file`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.23s
[INFO] running `"docker" "inspect" "18a273b5667148a8350b9de3bb9adef45eb9ad6372caed242a8a6e18b2910e6b"`
[INFO] running `"docker" "rm" "-f" "18a273b5667148a8350b9de3bb9adef45eb9ad6372caed242a8a6e18b2910e6b"`
[INFO] [stdout] 18a273b5667148a8350b9de3bb9adef45eb9ad6372caed242a8a6e18b2910e6b