[INFO] cloning repository https://github.com/Ben-Lichtman/uart_buster
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ben-Lichtman/uart_buster" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBen-Lichtman%2Fuart_buster", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBen-Lichtman%2Fuart_buster'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b4f0f1fceba6d19ec7f7058a90ea9763152e6891
[INFO] checking Ben-Lichtman/uart_buster against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBen-Lichtman%2Fuart_buster" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Ben-Lichtman/uart_buster on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1/source/.cargo/config
[INFO] started tweaking git repo https://github.com/Ben-Lichtman/uart_buster
[INFO] finished tweaking git repo https://github.com/Ben-Lichtman/uart_buster
[INFO] tweaked toml for git repo https://github.com/Ben-Lichtman/uart_buster written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/Ben-Lichtman/uart_buster already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded volatile-register v0.1.2
[INFO] [stderr]   Downloaded fpa v0.1.0
[INFO] [stderr]   Downloaded cortex-m v0.1.8
[INFO] [stderr]   Downloaded as-slice v0.1.2
[INFO] [stderr]   Downloaded nrf51 v0.7.0
[INFO] [stderr]   Downloaded linked_list_allocator v0.6.4
[INFO] [stderr]   Downloaded cortex-m v0.6.1
[INFO] [stderr]   Downloaded nrf51-hal v0.7.1
[INFO] [stderr]   Downloaded alloc-cortex-m v0.3.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 14ba3c960d1b04c26297ef37e3078f2326d16e0959c2d0c99c2a1c2f9c5d0ecb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "14ba3c960d1b04c26297ef37e3078f2326d16e0959c2d0c99c2a1c2f9c5d0ecb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "14ba3c960d1b04c26297ef37e3078f2326d16e0959c2d0c99c2a1c2f9c5d0ecb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14ba3c960d1b04c26297ef37e3078f2326d16e0959c2d0c99c2a1c2f9c5d0ecb", kill_on_drop: false }`
[INFO] [stdout] 14ba3c960d1b04c26297ef37e3078f2326d16e0959c2d0c99c2a1c2f9c5d0ecb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4089f7127b988921d110db9e5b83a499aebe10202236b7f1474107dee7c2b27
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e4089f7127b988921d110db9e5b83a499aebe10202236b7f1474107dee7c2b27", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling cortex-m v0.6.1
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]     Checking vcell v0.1.2
[INFO] [stderr]    Compiling cortex-m-rt v0.6.12
[INFO] [stderr]    Compiling nrf51 v0.7.0
[INFO] [stderr]    Compiling cortex-m-semihosting v0.3.5
[INFO] [stderr]    Compiling fpa v0.1.0
[INFO] [stderr]     Checking r0 v0.2.2
[INFO] [stderr]     Checking volatile-register v0.1.2
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking nb v0.1.2
[INFO] [stderr]     Checking linked_list_allocator v0.6.4
[INFO] [stderr]    Compiling uart-buster v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking cortex-m v0.1.8
[INFO] [stderr]     Checking volatile-register v0.2.0
[INFO] [stdout] error[E0432]: unresolved imports `alloc::alloc::Alloc`, `alloc::alloc::AllocErr`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/linked_list_allocator-0.6.4/src/lib.rs:14:20
[INFO] [stdout]    |
[INFO] [stdout] 14 | use alloc::alloc::{Alloc, AllocErr, Layout};
[INFO] [stdout]    |                    ^^^^^  ^^^^^^^^ no `AllocErr` in `alloc`
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    no `Alloc` in `alloc`
[INFO] [stdout]    |
[INFO] [stdout] help: a similar name exists in the module
[INFO] [stdout]    |
[INFO] [stdout] 14 | use alloc::alloc::{alloc, AllocErr, Layout};
[INFO] [stdout]    |                    ^^^^^
[INFO] [stdout] help: a similar name exists in the module
[INFO] [stdout]    |
[INFO] [stdout] 14 | use alloc::alloc::{Alloc, AllocError, Layout};
[INFO] [stdout]    |                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `alloc::alloc::AllocErr`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/linked_list_allocator-0.6.4/src/hole.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use alloc::alloc::{AllocErr, Layout};
[INFO] [stdout]   |                    ^^^^^^^^
[INFO] [stdout]   |                    |
[INFO] [stdout]   |                    no `AllocErr` in `alloc`
[INFO] [stdout]   |                    help: a similar name exists in the module: `AllocError`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `linked_list_allocator`
[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] [stdout] error: the legacy LLVM-style asm! syntax is no longer supported
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cortex-m-0.1.8/src/asm.rs:56:9
[INFO] [stdout]    |
[INFO] [stdout] 56 |         asm!("nop" :::: "volatile");
[INFO] [stdout]    |         ----^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: replace with: `llvm_asm!`
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider migrating to the new asm! syntax specified in RFC 2873
[INFO] [stdout]    = note: alternatively, switch to llvm_asm! to keep your code working as it is
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e4089f7127b988921d110db9e5b83a499aebe10202236b7f1474107dee7c2b27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4089f7127b988921d110db9e5b83a499aebe10202236b7f1474107dee7c2b27", kill_on_drop: false }`
[INFO] [stdout] e4089f7127b988921d110db9e5b83a499aebe10202236b7f1474107dee7c2b27