[INFO] cloning repository https://github.com/AlbinMartinsson/E7020E_labs
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AlbinMartinsson/E7020E_labs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlbinMartinsson%2FE7020E_labs"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlbinMartinsson%2FE7020E_labs'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c06967d0dabccffeb399f2d7acab78aa27320e48
[INFO] checking AlbinMartinsson/E7020E_labs against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAlbinMartinsson%2FE7020E_labs" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] [stderr] Checking out files:  24% (200/816)   
Checking out files:  25% (204/816)   
Checking out files:  26% (213/816)   
Checking out files:  27% (221/816)   
Checking out files:  28% (229/816)   
Checking out files:  29% (237/816)   
Checking out files:  30% (245/816)   
Checking out files:  31% (253/816)   
Checking out files:  32% (262/816)   
Checking out files:  33% (270/816)   
Checking out files:  34% (278/816)   
Checking out files:  35% (286/816)   
Checking out files:  36% (294/816)   
Checking out files:  37% (302/816)   
Checking out files:  38% (311/816)   
Checking out files:  39% (319/816)   
Checking out files:  40% (327/816)   
Checking out files:  41% (335/816)   
Checking out files:  42% (343/816)   
Checking out files:  43% (351/816)   
Checking out files:  44% (360/816)   
Checking out files:  45% (368/816)   
Checking out files:  46% (376/816)   
Checking out files:  47% (384/816)   
Checking out files:  48% (392/816)   
Checking out files:  49% (400/816)   
Checking out files:  50% (408/816)   
Checking out files:  51% (417/816)   
Checking out files:  52% (425/816)   
Checking out files:  53% (433/816)   
Checking out files:  54% (441/816)   
Checking out files:  55% (449/816)   
Checking out files:  56% (457/816)   
Checking out files:  57% (466/816)   
Checking out files:  58% (474/816)   
Checking out files:  59% (482/816)   
Checking out files:  60% (490/816)   
Checking out files:  61% (498/816)   
Checking out files:  62% (506/816)   
Checking out files:  63% (515/816)   
Checking out files:  64% (523/816)   
Checking out files:  65% (531/816)   
Checking out files:  66% (539/816)   
Checking out files:  67% (547/816)   
Checking out files:  68% (555/816)   
Checking out files:  69% (564/816)   
Checking out files:  70% (572/816)   
Checking out files:  71% (580/816)   
Checking out files:  72% (588/816)   
Checking out files:  73% (596/816)   
Checking out files:  74% (604/816)   
Checking out files:  75% (612/816)   
Checking out files:  76% (621/816)   
Checking out files:  77% (629/816)   
Checking out files:  78% (637/816)   
Checking out files:  79% (645/816)   
Checking out files:  80% (653/816)   
Checking out files:  81% (661/816)   
Checking out files:  82% (670/816)   
Checking out files:  83% (678/816)   
Checking out files:  84% (686/816)   
Checking out files:  85% (694/816)   
Checking out files:  86% (702/816)   
Checking out files:  87% (710/816)   
Checking out files:  88% (719/816)   
Checking out files:  89% (727/816)   
Checking out files:  90% (735/816)   
Checking out files:  91% (743/816)   
Checking out files:  92% (751/816)   
Checking out files:  93% (759/816)   
Checking out files:  94% (768/816)   
Checking out files:  95% (776/816)   
Checking out files:  96% (784/816)   
Checking out files:  97% (792/816)   
Checking out files:  98% (800/816)   
Checking out files:  99% (808/816)   
Checking out files: 100% (816/816)   
Checking out files: 100% (816/816), done.
[INFO] validating manifest of git repo https://github.com/AlbinMartinsson/E7020E_labs on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/AlbinMartinsson/E7020E_labs
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/AlbinMartinsson/E7020E_labs
[INFO] tweaked toml for git repo https://github.com/AlbinMartinsson/E7020E_labs written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/AlbinMartinsson/E7020E_labs already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 86bcf67854cd46e6eca719109def4dfa854420fe7e418f04a3f0af7a600f5bf8
[INFO] running `"docker" "start" "-a" "86bcf67854cd46e6eca719109def4dfa854420fe7e418f04a3f0af7a600f5bf8"`
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling cortex-m v0.6.2
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking vcell v0.1.2
[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] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[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] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0606]: casting `f64` as `u32` is invalid
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/typenum-1.11.2/build/main.rs:84:23
[INFO] [stderr]    |
[INFO] [stderr] 84 |     let first2: u32 = (highest as f64).log(2.0).round() as u32 + 1;
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `u32` is invalid
[INFO] [stderr]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/typenum-1.11.2/build/main.rs:85:24
[INFO] [stderr]    |
[INFO] [stderr] 85 |     let first10: u32 = (highest as f64).log(10.0) as u32 + 1;
[INFO] [stderr]    |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0606`.
[INFO] [stderr] error: could not compile `typenum`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "86bcf67854cd46e6eca719109def4dfa854420fe7e418f04a3f0af7a600f5bf8"`
[INFO] running `"docker" "rm" "-f" "86bcf67854cd46e6eca719109def4dfa854420fe7e418f04a3f0af7a600f5bf8"`
[INFO] [stdout] 86bcf67854cd46e6eca719109def4dfa854420fe7e418f04a3f0af7a600f5bf8