[INFO] crate nrf51 0.5.2 is already in cache [INFO] extracting crate nrf51 0.5.2 into work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/reg/nrf51/0.5.2 [INFO] extracting crate nrf51 0.5.2 into work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/reg/nrf51/0.5.2 [INFO] validating manifest of nrf51-0.5.2 on toolchain master#f66e4697ae286985ddefc53c3a047614568458bb [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of nrf51-0.5.2 on toolchain try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c3b22200e6f5b70eb1f99ae6944d989ae17a458a-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing nrf51-0.5.2 [INFO] finished frobbing nrf51-0.5.2 [INFO] frobbed toml for nrf51-0.5.2 written to work/ex/pr-58592/sources/master#f66e4697ae286985ddefc53c3a047614568458bb/reg/nrf51/0.5.2/Cargo.toml [INFO] started frobbing nrf51-0.5.2 [INFO] finished frobbing nrf51-0.5.2 [INFO] frobbed toml for nrf51-0.5.2 written to work/ex/pr-58592/sources/try#c3b22200e6f5b70eb1f99ae6944d989ae17a458a/reg/nrf51/0.5.2/Cargo.toml [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c3b22200e6f5b70eb1f99ae6944d989ae17a458a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-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=-Tlink.x -C linker=arm-none-eabi-ld -Z linker-flavor=ld --emit=asm --target thumbv6m-none-eabi --crate-type bin --crate-type rlib --crate-type dylib --crate-type cdylib --crate-type staticlib --crate-type proc-macro` (exit code: 1) [INFO] [stderr] --- stderr [INFO] [stderr] error: unknown debugging option: `linker-flavor` [INFO] [stderr] [INFO] [stderr] [ERROR] this task or one of its parent failed! [ERROR] command `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+f66e4697ae286985ddefc53c3a047614568458bb-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` failed