[INFO] fetching crate vex-rt 0.10.0...
[INFO] checking vex-rt-0.10.0 against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] extracting crate vex-rt 0.10.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate vex-rt 0.10.0 on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4/source/.cargo/config
[INFO] removed /workspace/builds/worker-4/source/rust-toolchain
[INFO] started tweaking crates.io crate vex-rt 0.10.0
[INFO] finished tweaking crates.io crate vex-rt 0.10.0
[INFO] tweaked toml for crates.io crate vex-rt 0.10.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate vex-rt 0.10.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded by_address v1.0.4
[INFO] [stderr]   Downloaded array-init v2.0.0
[INFO] [stderr]   Downloaded clang-sys v1.1.1
[INFO] [stderr]   Downloaded zip-extensions v0.6.0
[INFO] [stderr]   Downloaded libc-print v0.1.16
[INFO] [stderr]   Downloaded spin v0.9.1
[INFO] [stderr]   Downloaded owner-monad v0.1.0
[INFO] [stderr]   Downloaded newlib-alloc v0.1.0
[INFO] [stderr]   Downloaded rcstring v0.2.1
[INFO] [stderr]   Downloaded cstring-interop v0.1.0
[INFO] [stderr]   Downloaded queue-model v0.1.2
[INFO] [stderr]   Downloaded raii-map v0.1.0
[INFO] [stderr]   Downloaded safe-modular-arithmetic v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1dc63d28d41ae43781c1db1c963585c5ce361787b9d4b88c33663f0368b8fc58
[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" "1dc63d28d41ae43781c1db1c963585c5ce361787b9d4b88c33663f0368b8fc58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1dc63d28d41ae43781c1db1c963585c5ce361787b9d4b88c33663f0368b8fc58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1dc63d28d41ae43781c1db1c963585c5ce361787b9d4b88c33663f0368b8fc58", kill_on_drop: false }`
[INFO] [stdout] 1dc63d28d41ae43781c1db1c963585c5ce361787b9d4b88c33663f0368b8fc58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e07250094bd32b4e0b3c4706b3efdd0394fa96bfbf020953dc0247e58b78d4ab
[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" "e07250094bd32b4e0b3c4706b3efdd0394fa96bfbf020953dc0247e58b78d4ab", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.91
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling syn v1.0.65
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking owner-monad v0.1.0
[INFO] [stderr]     Checking rcstring v0.2.1
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking by_address v1.0.4
[INFO] [stderr]    Compiling bzip2-sys v0.1.10+1.0.8
[INFO] [stderr]    Compiling libloading v0.7.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling miniz_oxide v0.3.7
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking raii-map v0.1.0
[INFO] [stderr]     Checking itertools v0.10.1
[INFO] [stderr]     Checking safe-modular-arithmetic v0.2.4
[INFO] [stderr]     Checking spin v0.9.1
[INFO] [stderr]     Checking queue-model v0.1.2
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling clang-sys v1.1.1
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling flate2 v1.0.14
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]     Checking libc-print v0.1.16
[INFO] [stderr]     Checking cstring-interop v0.1.0
[INFO] [stderr]     Checking newlib-alloc v0.1.0
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling bindgen v0.58.1
[INFO] [stderr]    Compiling bzip2 v0.3.3
[INFO] [stderr]    Compiling regex v1.4.5
[INFO] [stderr]    Compiling env_logger v0.8.3
[INFO] [stderr]    Compiling cexpr v0.4.0
[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 v0.10.0 (/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/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-1a95cddb5b8aaf6b.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:38:1
[INFO] [stdout]    |
[INFO] [stdout] 38 | 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/3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-1a95cddb5b8aaf6b.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` due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "e07250094bd32b4e0b3c4706b3efdd0394fa96bfbf020953dc0247e58b78d4ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e07250094bd32b4e0b3c4706b3efdd0394fa96bfbf020953dc0247e58b78d4ab", kill_on_drop: false }`
[INFO] [stdout] e07250094bd32b4e0b3c4706b3efdd0394fa96bfbf020953dc0247e58b78d4ab