[INFO] fetching crate libos 0.1.2...
[INFO] checking libos-0.1.2 against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] extracting crate libos 0.1.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate libos 0.1.2 on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate libos 0.1.2
[INFO] finished tweaking crates.io crate libos 0.1.2
[INFO] tweaked toml for crates.io crate libos 0.1.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+45d050cde277b22a755847338f2acc2c7b834141" "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] fda5db48c9c5d999ba45bcab2679343369c63f1134f80009808bc2d2efb1db88
[INFO] running `"docker" "start" "-a" "fda5db48c9c5d999ba45bcab2679343369c63f1134f80009808bc2d2efb1db88"`
[INFO] [stderr]    Compiling llvm-tools v0.1.1
[INFO] [stderr]     Checking ux v0.1.3
[INFO] [stderr]     Checking bit_field v0.9.0
[INFO] [stderr]     Checking zero v0.1.2
[INFO] [stderr]     Checking usize_conversions v0.2.0
[INFO] [stderr]     Checking fixedvec v0.2.4
[INFO] [stderr]     Checking array-init v0.0.4
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking xmas-elf v0.6.2
[INFO] [stderr]    Compiling bootloader v0.6.4
[INFO] [stderr]     Checking x86_64 v0.7.7
[INFO] [stderr]     Checking libos v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0152]: found duplicate lang item `oom`
[INFO] [stderr]   --> src/heap.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | / pub fn alloc_error_handler(layout: Layout) -> ! {
[INFO] [stderr] 21 | |     panic!("allocation error: {:?}", layout)
[INFO] [stderr] 22 | | }
[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 `libos`.
[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] warning: constant item is never used: `CMD_SINGLE`
[INFO] [stderr]   --> src/pic.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | const CMD_SINGLE: u8 = 0x2;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `CMD_INTERVAL4`
[INFO] [stderr]   --> src/pic.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | const CMD_INTERVAL4: u8 = 0x4;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `CMD_LEVEL`
[INFO] [stderr]   --> src/pic.rs:16:1
[INFO] [stderr]    |
[INFO] [stderr] 16 | const CMD_LEVEL: u8 = 0x8;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `CMD_AUTO`
[INFO] [stderr]   --> src/pic.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | const CMD_AUTO: u8 = 0x2;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `CMD_BUF_SLAVE`
[INFO] [stderr]   --> src/pic.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | const CMD_BUF_SLAVE: u8 = 0x8;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `CMD_BUF_MASTER`
[INFO] [stderr]   --> src/pic.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | const CMD_BUF_MASTER: u8 = 0xc;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `CMD_SFNM`
[INFO] [stderr]   --> src/pic.rs:26:1
[INFO] [stderr]    |
[INFO] [stderr] 26 | const CMD_SFNM: u8 = 0x10;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "fda5db48c9c5d999ba45bcab2679343369c63f1134f80009808bc2d2efb1db88"`
[INFO] running `"docker" "rm" "-f" "fda5db48c9c5d999ba45bcab2679343369c63f1134f80009808bc2d2efb1db88"`
[INFO] [stdout] fda5db48c9c5d999ba45bcab2679343369c63f1134f80009808bc2d2efb1db88