[INFO] crate ssd1331 0.2.0-alpha.2 is already in cache
[INFO] checking ssd1331-0.2.0-alpha.2 against master#6250d56355d72264ece721e8d0dc95b16a6824b1 for pr-68350
[INFO] extracting crate ssd1331 0.2.0-alpha.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate ssd1331 0.2.0-alpha.2 on toolchain 6250d56355d72264ece721e8d0dc95b16a6824b1
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate ssd1331 0.2.0-alpha.2
[INFO] finished tweaking crates.io crate ssd1331 0.2.0-alpha.2
[INFO] tweaked toml for crates.io crate ssd1331 0.2.0-alpha.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate ssd1331 0.2.0-alpha.2 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+6250d56355d72264ece721e8d0dc95b16a6824b1" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 3e4d0f65e581ed77de237f9739a738d7f5d0eb8b8b73c52167b535668dd813e4
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "3e4d0f65e581ed77de237f9739a738d7f5d0eb8b8b73c52167b535668dd813e4"`
[INFO] [stderr]    Compiling proc-macro2 v1.0.7
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking vcell v0.1.2
[INFO] [stderr]    Compiling syn v1.0.13
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling cortex-m-rt v0.6.11
[INFO] [stderr] error[E0463]: can't find crate for `core`
[INFO] [stderr]   |
[INFO] [stderr]   = note: the `thumbv7m-none-eabi` target may not be installed
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: could not compile `stable_deref_trait`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0463]: can't find crate for `core`
[INFO] [stderr]   |
[INFO] [stderr]   = note: the `thumbv7m-none-eabi` target may not be installed
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: could not compile `vcell`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "3e4d0f65e581ed77de237f9739a738d7f5d0eb8b8b73c52167b535668dd813e4"`
[INFO] running `"docker" "rm" "-f" "3e4d0f65e581ed77de237f9739a738d7f5d0eb8b8b73c52167b535668dd813e4"`
[INFO] [stdout] 3e4d0f65e581ed77de237f9739a738d7f5d0eb8b8b73c52167b535668dd813e4