[INFO] updating cached repository PeronTheDuck/rust_6502_assembler
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/PeronTheDuck/rust_6502_assembler
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/PeronTheDuck/rust_6502_assembler" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/PeronTheDuck/rust_6502_assembler"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/PeronTheDuck/rust_6502_assembler'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/PeronTheDuck/rust_6502_assembler" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/PeronTheDuck/rust_6502_assembler"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/PeronTheDuck/rust_6502_assembler'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 438dc6aa160213ef3949332f63a260e400a34a7f
[INFO] sha for GitHub repo PeronTheDuck/rust_6502_assembler: 438dc6aa160213ef3949332f63a260e400a34a7f
[INFO] validating manifest of PeronTheDuck/rust_6502_assembler 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 PeronTheDuck/rust_6502_assembler 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 PeronTheDuck/rust_6502_assembler
[INFO] removed path dependency argument-parser from PeronTheDuck/rust_6502_assembler
[INFO] finished frobbing PeronTheDuck/rust_6502_assembler
[INFO] frobbed toml for PeronTheDuck/rust_6502_assembler written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/PeronTheDuck/rust_6502_assembler/Cargo.toml
[INFO] started frobbing PeronTheDuck/rust_6502_assembler
[INFO] removed path dependency argument-parser from PeronTheDuck/rust_6502_assembler
[INFO] finished frobbing PeronTheDuck/rust_6502_assembler
[INFO] frobbed toml for PeronTheDuck/rust_6502_assembler written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/PeronTheDuck/rust_6502_assembler/Cargo.toml
[INFO] crate PeronTheDuck/rust_6502_assembler 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] [stderr]     Updating crates.io index
[INFO] [stderr] error: no matching package named `argument-parser` found
[INFO] [stderr] location searched: registry `https://github.com/rust-lang/crates.io-index`
[INFO] [stderr] required by package `crustacean_6502_assembler v0.1.0 (/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/PeronTheDuck/rust_6502_assembler)`
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed