Dec 19 21:23:49.085 INFO checking VratnamT/firecracker against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 21:23:49.085 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-1/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/VratnamT/firecracker:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 21:23:49.716 INFO [stdout] da69fd88b72499f5733e07d96c79a7d8d75cac5747bc5b1aea9fc2ac43f6aac0
Dec 19 21:23:49.718 INFO running `"docker" "start" "-a" "da69fd88b72499f5733e07d96c79a7d8d75cac5747bc5b1aea9fc2ac43f6aac0"`
Dec 19 21:23:52.028 INFO [stderr]    Compiling version_check v0.1.5
Dec 19 21:23:52.028 INFO [stderr]    Compiling cfg-if v0.1.6
Dec 19 21:23:52.028 INFO [stderr]    Compiling libc v0.2.44
Dec 19 21:23:52.028 INFO [stderr]    Compiling unicode-xid v0.0.4
Dec 19 21:23:52.028 INFO [stderr]    Compiling rustc-serialize v0.3.24
Dec 19 21:23:52.028 INFO [stderr]    Compiling semver-parser v0.7.0
Dec 19 21:23:52.028 INFO [stderr]    Compiling quote v0.3.15
Dec 19 21:23:52.028 INFO [stderr]    Compiling unicode-xid v0.0.3
Dec 19 21:23:52.544 INFO [stderr]    Compiling term v0.4.6
Dec 19 21:23:52.800 INFO [stderr]    Compiling num-traits v0.2.6
Dec 19 21:23:55.868 INFO [stderr]    Compiling lazy_static v1.2.0
Dec 19 21:23:55.928 INFO [stderr]    Compiling ucd-util v0.1.3
Dec 19 21:23:57.416 INFO [stderr]    Compiling regex v0.2.11
Dec 19 21:23:57.436 INFO [stderr]    Compiling bitflags v0.5.0
Dec 19 21:23:57.552 INFO [stderr]    Compiling num-integer v0.1.39
Dec 19 21:23:57.564 INFO [stderr]     Checking itoa v0.4.3
Dec 19 21:23:57.672 INFO [stderr]    Compiling utf8-ranges v1.0.2
Dec 19 21:23:58.074 INFO [stderr] error[E0463]: can't find crate for `std`
Dec 19 21:23:58.075 INFO [stderr]   |
Dec 19 21:23:58.075 INFO [stderr]   = note: the `x86_64-unknown-linux-musl` target may not be installed
Dec 19 21:23:58.075 INFO [stderr] 
Dec 19 21:23:58.076 INFO [stderr] error: aborting due to previous error
Dec 19 21:23:58.076 INFO [stderr] 
Dec 19 21:23:58.076 INFO [stderr] For more information about this error, try `rustc --explain E0463`.
Dec 19 21:23:58.101 INFO [stderr] error: Could not compile `itoa`.
Dec 19 21:23:58.102 INFO [stderr] warning: build failed, waiting for other jobs to finish...
Dec 19 21:24:07.108 INFO [stderr] error: build failed
Dec 19 21:24:08.316 INFO running `"docker" "inspect" "da69fd88b72499f5733e07d96c79a7d8d75cac5747bc5b1aea9fc2ac43f6aac0"`
Dec 19 21:24:08.610 INFO running `"docker" "rm" "-f" "da69fd88b72499f5733e07d96c79a7d8d75cac5747bc5b1aea9fc2ac43f6aac0"`
Dec 19 21:24:08.956 INFO [stdout] da69fd88b72499f5733e07d96c79a7d8d75cac5747bc5b1aea9fc2ac43f6aac0