[INFO] updating cached repository MabezDev/xtensa-rust-core
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/MabezDev/xtensa-rust-core
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/MabezDev/xtensa-rust-core" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/MabezDev/xtensa-rust-core"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/MabezDev/xtensa-rust-core'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/MabezDev/xtensa-rust-core" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/MabezDev/xtensa-rust-core"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/MabezDev/xtensa-rust-core'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 3a33a064d010c67539128611833dcf64aa43e1b7
[INFO] sha for GitHub repo MabezDev/xtensa-rust-core: 3a33a064d010c67539128611833dcf64aa43e1b7
[INFO] validating manifest of MabezDev/xtensa-rust-core on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of MabezDev/xtensa-rust-core on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing MabezDev/xtensa-rust-core
[INFO] finished frobbing MabezDev/xtensa-rust-core
[INFO] frobbed toml for MabezDev/xtensa-rust-core written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/MabezDev/xtensa-rust-core/Cargo.toml
[INFO] started frobbing MabezDev/xtensa-rust-core
[INFO] finished frobbing MabezDev/xtensa-rust-core
[INFO] frobbed toml for MabezDev/xtensa-rust-core written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/MabezDev/xtensa-rust-core/Cargo.toml
[INFO] crate MabezDev/xtensa-rust-core already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: failed to run `rustc` to learn about target-specific information
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc - --crate-name ___ --print=file-names -C link-arg=-nostartfiles --target xtensa-none-elf --crate-type bin --crate-type rlib --crate-type dylib --crate-type cdylib --crate-type staticlib --crate-type proc-macro --print=sysroot --print=cfg` (exit code: 1)
[INFO] [stderr] --- stderr
[INFO] [stderr] error: Error loading target specification: Could not find specification for target "xtensa-none-elf"
[INFO] [stderr]   |
[INFO] [stderr]   = help: Use `--print target-list` for a list of built-in targets
[INFO] [stderr] 
[INFO] [stderr] 
[ERROR] this task or one of its parent failed!
[ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed