[INFO] fetching crate vex-rt 0.7.0...
[INFO] checking vex-rt-0.7.0 against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] extracting crate vex-rt 0.7.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate vex-rt 0.7.0 on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-1/source/.cargo/config
[INFO] removed /workspace/builds/worker-1/source/rust-toolchain
[INFO] started tweaking crates.io crate vex-rt 0.7.0
[INFO] finished tweaking crates.io crate vex-rt 0.7.0
[INFO] tweaked toml for crates.io crate vex-rt 0.7.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate vex-rt 0.7.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c2fe66f4bd5abb561a59d07745cc3e12b1b3adf18f1ea3ec3579ebafcfe31167
[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" "c2fe66f4bd5abb561a59d07745cc3e12b1b3adf18f1ea3ec3579ebafcfe31167", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c2fe66f4bd5abb561a59d07745cc3e12b1b3adf18f1ea3ec3579ebafcfe31167", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2fe66f4bd5abb561a59d07745cc3e12b1b3adf18f1ea3ec3579ebafcfe31167", kill_on_drop: false }`
[INFO] [stdout] c2fe66f4bd5abb561a59d07745cc3e12b1b3adf18f1ea3ec3579ebafcfe31167
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 25a24ba318ba2f60458f16be538be36c3f1ed08fcd3af865e5332e95504c6792
[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" "25a24ba318ba2f60458f16be538be36c3f1ed08fcd3af865e5332e95504c6792", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.91
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling syn v1.0.65
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling bindgen v0.58.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling shlex v1.0.0
[INFO] [stderr]     Checking rcstring v0.2.1
[INFO] [stderr]     Checking owner-monad v0.1.0
[INFO] [stderr]     Checking by_address v1.0.4
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking array-init v2.0.0
[INFO] [stderr]    Compiling clang-sys v1.1.1
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]    Compiling libloading v0.7.0
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]     Checking raii-map v0.1.0
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking spin v0.9.0
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]     Checking cstring-interop v0.1.0
[INFO] [stderr]     Checking libc-print v0.1.16
[INFO] [stderr]     Checking newlib-alloc v0.1.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling flate2 v1.0.14
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling bzip2-sys v0.1.10+1.0.8
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]     Checking safe-modular-arithmetic v0.2.4
[INFO] [stderr]     Checking queue-model v0.1.2
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stderr]    Compiling bzip2 v0.3.3
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling env_logger v0.8.3
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling thiserror v1.0.24
[INFO] [stderr]    Compiling zip v0.5.11
[INFO] [stderr]    Compiling zip-extensions v0.6.0
[INFO] [stderr]    Compiling vex-rt v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: found duplicate lang item `oom`
[INFO] [stdout]  --> src/allocator.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | fn handle(layout: Layout) -> ! {
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: the lang item is first defined in crate `std` (which `test` depends on)
[INFO] [stdout]   = note: first definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-c6dddd3d354e6bea.rlib
[INFO] [stdout]   = note: second definition in the local crate (`vex_rt`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/lib.rs:36:1
[INFO] [stdout]    |
[INFO] [stdout] 36 | fn panic(panic_info: &PanicInfo) -> ! {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the lang item is first defined in crate `std` (which `test` depends on)
[INFO] [stdout]    = note: first definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/a5f164faad4a2fed606b8160fd7ecd2d5cbba381/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-c6dddd3d354e6bea.rlib
[INFO] [stdout]    = note: second definition in the local crate (`vex_rt`)
[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 E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `vex-rt`
[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 `Command { std: "docker" "inspect" "25a24ba318ba2f60458f16be538be36c3f1ed08fcd3af865e5332e95504c6792", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "25a24ba318ba2f60458f16be538be36c3f1ed08fcd3af865e5332e95504c6792", kill_on_drop: false }`
[INFO] [stdout] 25a24ba318ba2f60458f16be538be36c3f1ed08fcd3af865e5332e95504c6792