[INFO] updating cached repository sebastianblunt/cargo-6999
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sebastianblunt/cargo-6999
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sebastianblunt/cargo-6999" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/sebastianblunt/cargo-6999"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/sebastianblunt/cargo-6999'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sebastianblunt/cargo-6999" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/sebastianblunt/cargo-6999"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/sebastianblunt/cargo-6999'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ff3ec8066738b9f35c9c2d0a8498a0badac456f1
[INFO] sha for GitHub repo sebastianblunt/cargo-6999: ff3ec8066738b9f35c9c2d0a8498a0badac456f1
[INFO] validating manifest of sebastianblunt/cargo-6999 on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of sebastianblunt/cargo-6999 on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing sebastianblunt/cargo-6999
[INFO] finished frobbing sebastianblunt/cargo-6999
[INFO] frobbed toml for sebastianblunt/cargo-6999 written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/sebastianblunt/cargo-6999/Cargo.toml
[INFO] started frobbing sebastianblunt/cargo-6999
[INFO] finished frobbing sebastianblunt/cargo-6999
[INFO] frobbed toml for sebastianblunt/cargo-6999 written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/sebastianblunt/cargo-6999/Cargo.toml
[INFO] crate sebastianblunt/cargo-6999 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]    Unpacking stable_deref_trait v1.1.1 (registry `/mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/sebastianblunt/cargo-6999/vendor`)
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]    Unpacking stable_deref_trait v1.1.1 (registry `/mnt/big/crater/work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/sebastianblunt/cargo-6999/vendor`)
[INFO] checking sebastianblunt/cargo-6999 against try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-2/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/sebastianblunt/cargo-6999:/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" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 20a9544f9b73c89a9b903610de2640f26e4ed09036b95c4ea69f604ecc78ecc5
[INFO] running `"docker" "start" "-a" "20a9544f9b73c89a9b903610de2640f26e4ed09036b95c4ea69f604ecc78ecc5"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Unpacking stable_deref_trait v1.1.1 (registry `/opt/crater/workdir/vendor`)
[INFO] [stderr] error: failed to download `stable_deref_trait v1.1.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   unable to get packages from source
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to download replaced source registry `https://github.com/rust-lang/crates.io-index`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to unpack package `stable_deref_trait v1.1.1 (registry `/opt/crater/workdir/vendor`)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   Read-only file system (os error 30)
[INFO] running `"docker" "inspect" "20a9544f9b73c89a9b903610de2640f26e4ed09036b95c4ea69f604ecc78ecc5"`
[INFO] running `"docker" "rm" "-f" "20a9544f9b73c89a9b903610de2640f26e4ed09036b95c4ea69f604ecc78ecc5"`
[INFO] [stdout] 20a9544f9b73c89a9b903610de2640f26e4ed09036b95c4ea69f604ecc78ecc5