[INFO] cloning repository https://github.com/rodrigovalle/os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rodrigovalle/os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frodrigovalle%2Fos", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frodrigovalle%2Fos'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6ee8e104d49b2257407627aeeee8e410ef10dd8b
[INFO] checking rodrigovalle/os against try#b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f for pr-76104
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frodrigovalle%2Fos" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rodrigovalle/os on toolchain b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4/source/.cargo/config
[INFO] started tweaking git repo https://github.com/rodrigovalle/os
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/rodrigovalle/os
[INFO] tweaked toml for git repo https://github.com/rodrigovalle/os written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/rodrigovalle/os already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded volatile v0.2.7
[INFO] [stderr]   Downloaded x86_64 v0.11.5
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1d06dc0da507430a9c75a406f44be593429c45ebf4ff867fe208eceea9af9281
[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" "1d06dc0da507430a9c75a406f44be593429c45ebf4ff867fe208eceea9af9281", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1d06dc0da507430a9c75a406f44be593429c45ebf4ff867fe208eceea9af9281", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d06dc0da507430a9c75a406f44be593429c45ebf4ff867fe208eceea9af9281", kill_on_drop: false }`
[INFO] [stdout] 1d06dc0da507430a9c75a406f44be593429c45ebf4ff867fe208eceea9af9281
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 29982f08de757c0d7dbd77f003fbd30131f83fb51e6d374e7992e170c8b666a1
[INFO] running `Command { std: "docker" "start" "-a" "29982f08de757c0d7dbd77f003fbd30131f83fb51e6d374e7992e170c8b666a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling x86_64 v0.11.5
[INFO] [stderr]    Compiling bootloader v0.9.8
[INFO] [stderr]     Checking bit_field v0.9.0
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking volatile v0.2.7
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking uart_16550 v0.2.7
[INFO] [stderr]     Checking os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: language item required, but not found: `eh_personality`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack_frame`
[INFO] [stdout]   --> src/interrupt.rs:31:40
[INFO] [stdout]    |
[INFO] [stdout] 31 | extern "x86-interrupt" fn divide_error(stack_frame: &mut InterruptStackFrame) {
[INFO] [stdout]    |                                        ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack_frame`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack_frame`
[INFO] [stdout]   --> src/interrupt.rs:48:5
[INFO] [stdout]    |
[INFO] [stdout] 48 |     stack_frame: &mut InterruptStackFrame,
[INFO] [stdout]    |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack_frame`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack_frame`
[INFO] [stdout]   --> src/interrupt.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 |     stack_frame: &mut InterruptStackFrame,
[INFO] [stdout]    |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack_frame`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error_code`
[INFO] [stdout]   --> src/interrupt.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 |     error_code: u64,
[INFO] [stdout]    |     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_error_code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `stack_frame`
[INFO] [stdout]   --> src/interrupt.rs:61:5
[INFO] [stdout]    |
[INFO] [stdout] 61 |     stack_frame: &mut InterruptStackFrame,
[INFO] [stdout]    |     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_stack_frame`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `error_code`
[INFO] [stdout]   --> src/interrupt.rs:81:5
[INFO] [stdout]    |
[INFO] [stdout] 81 |     error_code: u64,
[INFO] [stdout]    |     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_error_code`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `divide_error`
[INFO] [stdout]   --> src/interrupt.rs:31:27
[INFO] [stdout]    |
[INFO] [stdout] 31 | extern "x86-interrupt" fn divide_error(stack_frame: &mut InterruptStackFrame) {
[INFO] [stdout]    |                           ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `general_protection_fault`
[INFO] [stdout]   --> src/interrupt.rs:53:27
[INFO] [stdout]    |
[INFO] [stdout] 53 | extern "x86-interrupt" fn general_protection_fault(
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `page_fault`
[INFO] [stdout]   --> src/interrupt.rs:60:27
[INFO] [stdout]    |
[INFO] [stdout] 60 | extern "x86-interrupt" fn page_fault(
[INFO] [stdout]    |                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `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] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "29982f08de757c0d7dbd77f003fbd30131f83fb51e6d374e7992e170c8b666a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29982f08de757c0d7dbd77f003fbd30131f83fb51e6d374e7992e170c8b666a1", kill_on_drop: false }`
[INFO] [stdout] 29982f08de757c0d7dbd77f003fbd30131f83fb51e6d374e7992e170c8b666a1