[INFO] cloning repository https://github.com/kabeone/my_os
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kabeone/my_os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkabeone%2Fmy_os"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkabeone%2Fmy_os'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 48cec5f40ec0b8a625163f55313a7a8fcd8b21f2
[INFO] checking kabeone/my_os against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkabeone%2Fmy_os" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] [stderr] Checking out files:   3% (60/1612)   
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Checking out files: 100% (1612/1612), done.
[INFO] validating manifest of git repo https://github.com/kabeone/my_os 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/kabeone/my_os
[INFO] finished tweaking git repo https://github.com/kabeone/my_os
[INFO] tweaked toml for git repo https://github.com/kabeone/my_os written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/kabeone/my_os 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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] d366cfc31145d0f304652c53cac603c008d874e6194f98dcf10f12de97febf0a
[INFO] running `"docker" "start" "-a" "d366cfc31145d0f304652c53cac603c008d874e6194f98dcf10f12de97febf0a"`
[INFO] [stderr]    Compiling x86_64 v0.9.6
[INFO] [stderr]    Compiling bootloader v0.8.9
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking bit_field v0.9.0
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking cpuio v0.2.0
[INFO] [stderr]     Checking volatile v0.2.6
[INFO] [stderr]     Checking pc-keyboard v0.5.0
[INFO] [stderr]     Checking bitflags v1.2.1
[INFO] [stderr]     Checking lock_api v0.3.3
[INFO] [stderr]     Checking pic8259_simple v0.1.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking spinning_top v0.1.0
[INFO] [stderr]     Checking linked_list_allocator v0.8.1
[INFO] [stderr]     Checking uart_16550 v0.2.4
[INFO] [stderr]     Checking rust_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0152]: found duplicate lang item `oom`
[INFO] [stderr]   --> src/lib.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | / fn alloc_error_handler(layout: alloc::alloc::Layout) -> ! {
[INFO] [stderr] 35 | |     panic!("allocation error: {:?}", layout)
[INFO] [stderr] 36 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: the lang item is first defined in crate `std` (which `test` depends on)
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0152`.
[INFO] [stderr] error: could not compile `rust_os`.
[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" "d366cfc31145d0f304652c53cac603c008d874e6194f98dcf10f12de97febf0a"`
[INFO] running `"docker" "rm" "-f" "d366cfc31145d0f304652c53cac603c008d874e6194f98dcf10f12de97febf0a"`
[INFO] [stdout] d366cfc31145d0f304652c53cac603c008d874e6194f98dcf10f12de97febf0a