[INFO] cloning repository m-labs/adc2tcp
[INFO] running `"git" "clone" "--bare" "git://github.com/m-labs/adc2tcp.git" "work/cache/sources/gh/m-labs/adc2tcp"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/m-labs/adc2tcp'...
[INFO] running `"git" "clone" "work/cache/sources/gh/m-labs/adc2tcp" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/m-labs/adc2tcp"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/m-labs/adc2tcp'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/m-labs/adc2tcp" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/m-labs/adc2tcp"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/m-labs/adc2tcp'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 91c27d24998488031d6484c5a46c659a4b2b42cf
[INFO] sha for GitHub repo m-labs/adc2tcp: 91c27d24998488031d6484c5a46c659a4b2b42cf
[INFO] validating manifest of m-labs/adc2tcp on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of m-labs/adc2tcp on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing m-labs/adc2tcp
[INFO] finished frobbing m-labs/adc2tcp
[INFO] frobbed toml for m-labs/adc2tcp written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/m-labs/adc2tcp/Cargo.toml
[INFO] started frobbing m-labs/adc2tcp
[INFO] finished frobbing m-labs/adc2tcp
[INFO] frobbed toml for m-labs/adc2tcp written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/m-labs/adc2tcp/Cargo.toml
[INFO] crate m-labs/adc2tcp already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded stm32f4xx-hal v0.5.0
[INFO] [stderr]   Downloaded hash2hwaddr v0.0.1
[INFO] [stderr]   Downloaded cortex-m-log v0.5.0
[INFO] [stderr]   Downloaded stm32f4 v0.7.0
[INFO] [stderr]   Downloaded stm32-eth v0.1.2
[INFO] [stderr]   Downloaded smoltcp v0.5.0
[INFO] [stderr]   Downloaded managed v0.7.1
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing m-labs/adc2tcp against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/m-labs/adc2tcp:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"`
[INFO] [stdout] f0cad7da85ee0aef5fa2cfa721aefcdc36837ce0c59d647c48060df14953d528
[INFO] running `"docker" "start" "-a" "f0cad7da85ee0aef5fa2cfa721aefcdc36837ce0c59d647c48060df14953d528"`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.28
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling rand_core v0.4.0
[INFO] [stderr]    Compiling stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling vcell v0.1.0
[INFO] [stderr] error[E0463]: can't find crate for `core`
[INFO] [stderr]   |
[INFO] [stderr]   = note: the `thumbv7em-none-eabihf` 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 `thumbv7em-none-eabihf` 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" "f0cad7da85ee0aef5fa2cfa721aefcdc36837ce0c59d647c48060df14953d528"`
[INFO] running `"docker" "rm" "-f" "f0cad7da85ee0aef5fa2cfa721aefcdc36837ce0c59d647c48060df14953d528"`
[INFO] [stdout] f0cad7da85ee0aef5fa2cfa721aefcdc36837ce0c59d647c48060df14953d528