[INFO] cloning repository https://github.com/NZqian/ning-os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NZqian/ning-os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNZqian%2Fning-os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNZqian%2Fning-os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f276e1f1dbadf7140717d1c4b3b27e4415956a14
[INFO] checking NZqian/ning-os against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNZqian%2Fning-os" "/workspace/builds/worker-63/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-63/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/NZqian/ning-os on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-63/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/NZqian/ning-os
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/NZqian/ning-os
[INFO] tweaked toml for git repo https://github.com/NZqian/ning-os written to /workspace/builds/worker-63/source/Cargo.toml
[INFO] crate git repo https://github.com/NZqian/ning-os already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded spin v0.7.1
[INFO] [stderr]   Downloaded x86_64 v0.14.3
[INFO] [stderr]   Downloaded buddy_system_allocator v0.8.0
[INFO] [stderr]   Downloaded linked_list_allocator v0.9.0
[INFO] [stderr]   Downloaded bootloader v0.9.18
[INFO] [stderr]   Downloaded uart_16550 v0.2.15
[INFO] [stderr]   Downloaded pic8259 v0.10.1
[INFO] [stderr]   Downloaded volatile v0.4.4
[INFO] [stderr]   Downloaded spinning_top v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d274826f9c60706f6489c283b39483f7448eed73335d238f490d737422d17f79
[INFO] running `Command { std: "docker" "start" "-a" "d274826f9c60706f6489c283b39483f7448eed73335d238f490d737422d17f79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d274826f9c60706f6489c283b39483f7448eed73335d238f490d737422d17f79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d274826f9c60706f6489c283b39483f7448eed73335d238f490d737422d17f79", kill_on_drop: false }`
[INFO] [stdout] d274826f9c60706f6489c283b39483f7448eed73335d238f490d737422d17f79
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-63/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 734be8e8efbd49aab8457424bd2b4642aae85776fe60dedaa849ad11f3ba039a
[INFO] running `Command { std: "docker" "start" "-a" "734be8e8efbd49aab8457424bd2b4642aae85776fe60dedaa849ad11f3ba039a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling x86_64 v0.14.3
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking bit_field v0.9.0
[INFO] [stderr]     Checking volatile v0.4.4
[INFO] [stderr]    Compiling bootloader v0.9.18
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking spin v0.7.1
[INFO] [stderr]     Checking pc-keyboard v0.5.1
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking buddy_system_allocator v0.8.0
[INFO] [stderr]     Checking spinning_top v0.2.4
[INFO] [stderr]     Checking spin v0.9.2
[INFO] [stderr]     Checking linked_list_allocator v0.9.0
[INFO] [stderr]     Checking uart_16550 v0.2.15
[INFO] [stderr]     Checking pic8259 v0.10.1
[INFO] [stderr]     Checking ning_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `GlobalAlloc`, `Layout`
[INFO] [stdout]  --> src/allocator.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use alloc::alloc::{GlobalAlloc, Layout};
[INFO] [stdout]   |                    ^^^^^^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `panic`, `ptr::null_mut`
[INFO] [stdout]  --> src/allocator.rs:3:28
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::{result::Result, panic, ptr::null_mut};
[INFO] [stdout]   |                            ^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: language item required, but not found: `eh_personality`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `GlobalAlloc`, `Layout`
[INFO] [stdout]  --> src/allocator.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use alloc::alloc::{GlobalAlloc, Layout};
[INFO] [stdout]   |                    ^^^^^^^^^^^  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `panic`, `ptr::null_mut`
[INFO] [stdout]  --> src/allocator.rs:3:28
[INFO] [stdout]   |
[INFO] [stdout] 3 | use core::{result::Result, panic, ptr::null_mut};
[INFO] [stdout]   |                            ^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ning_os` due to 2 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: static variable `time_cnt` should have an upper case name
[INFO] [stdout]   --> src/interrupts.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 85 | static mut time_cnt: u8 = 0;
[INFO] [stdout]    |            ^^^^^^^^ help: convert the identifier to upper case: `TIME_CNT`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "734be8e8efbd49aab8457424bd2b4642aae85776fe60dedaa849ad11f3ba039a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "734be8e8efbd49aab8457424bd2b4642aae85776fe60dedaa849ad11f3ba039a", kill_on_drop: false }`
[INFO] [stdout] 734be8e8efbd49aab8457424bd2b4642aae85776fe60dedaa849ad11f3ba039a