[INFO] updating cached repository https://github.com/pjzhong/rust-os
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] df9cb8378f07cddcb038e346e76c483a72a172db
[INFO] checking pjzhong/rust-os against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpjzhong%2Frust-os" "/workspace/builds/worker-13/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pjzhong/rust-os on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/pjzhong/rust-os
[INFO] finished tweaking git repo https://github.com/pjzhong/rust-os
[INFO] tweaked toml for git repo https://github.com/pjzhong/rust-os written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/pjzhong/rust-os already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "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] 268db0f147b901671fef0a1b9236aa6410ec584f04458489a1f843541741dc13
[INFO] running `"docker" "start" "-a" "268db0f147b901671fef0a1b9236aa6410ec584f04458489a1f843541741dc13"`
[INFO] [stderr]    Compiling libc v0.2.51
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling cc v1.0.34
[INFO] [stderr]    Compiling llvm-tools v0.1.1
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking usize_conversions v0.2.0
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]     Checking bit_field v0.9.0
[INFO] [stderr]     Checking os_bootinfo v0.2.1
[INFO] [stderr]     Checking ux v0.1.3
[INFO] [stderr]     Checking zero v0.1.2
[INFO] [stderr]     Checking spin v0.5.0
[INFO] [stderr]     Checking font8x8 v0.2.4
[INFO] [stderr]     Checking cpuio v0.2.0
[INFO] [stderr]     Checking volatile v0.2.6
[INFO] [stderr]     Checking spin v0.4.10
[INFO] [stderr]     Checking pc-keyboard v0.3.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking array-init v0.0.4
[INFO] [stderr]     Checking array-init v0.0.3
[INFO] [stderr]    Compiling getopts v0.2.18
[INFO] [stderr]     Checking xmas-elf v0.6.2
[INFO] [stderr]     Checking pic8259_simple v0.1.1
[INFO] [stderr]     Checking x86_64 v0.2.14
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling bootloader v0.5.3
[INFO] [stderr]    Compiling pulldown-cmark v0.0.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling raw-cpuid v6.1.0
[INFO] [stderr]     Checking uart_16550 v0.1.0
[INFO] [stderr]     Checking x86_64 v0.3.6
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling skeptic v0.5.0
[INFO] [stderr]    Compiling fixedvec v0.2.3
[INFO] [stderr]     Checking x86_64 v0.5.3
[INFO] [stderr]     Checking rust_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/vga_buffer.rs:116:21
[INFO] [stderr]     |
[INFO] [stderr] 116 |                 0x20...0x7E | b'\n' => self.write_byte(byte),
[INFO] [stderr]     |                     ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/vga_buffer.rs:116:21
[INFO] [stderr]     |
[INFO] [stderr] 116 |                 0x20...0x7E | b'\n' => self.write_byte(byte),
[INFO] [stderr]     |                     ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Box` is imported redundantly
[INFO] [stderr]    --> src/vga_buffer.rs:157:13
[INFO] [stderr]     |
[INFO] [stderr] 157 |         use std::boxed::Box;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `unused_macors`
[INFO] [stderr]  --> src/bin/test-exception-breakpoint.rs:3:36
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![cfg_attr(test, allow(dead_code, unused_macors, unused_imports))]
[INFO] [stderr]   |                                    ^^^^^^^^^^^^^ help: did you mean: `unused_macros`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unknown_lints)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `unused_omports`
[INFO] [stderr]  --> src/bin/test-basic-boot.rs:3:25
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![cfg_attr(test, allow(unused_omports))]
[INFO] [stderr]   |                         ^^^^^^^^^^^^^^ help: did you mean: `unused_imports`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unknown_lints)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unknown lint: `unused_omports`
[INFO] [stderr]  --> src/bin/test-page-implementation.rs:3:25
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![cfg_attr(test, allow(unused_omports))]
[INFO] [stderr]   |                         ^^^^^^^^^^^^^^ help: did you mean: `unused_imports`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unknown_lints)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `BootInfo`
[INFO] [stderr]  --> src/bin/test-page-implementation.rs:5:31
[INFO] [stderr]   |
[INFO] [stderr] 5 | use bootloader::{entry_point, BootInfo};
[INFO] [stderr]   |                               ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::panic::PanicInfo`
[INFO] [stderr]  --> src/bin/test-page-implementation.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use core::panic::PanicInfo;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rust_os::println`
[INFO] [stderr]  --> src/bin/test-page-implementation.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use rust_os::println;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `exit_qemu`, `serial_println`
[INFO] [stderr]  --> src/bin/test-page-implementation.rs:8:15
[INFO] [stderr]   |
[INFO] [stderr] 8 | use rust_os::{exit_qemu, serial_println};
[INFO] [stderr]   |               ^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `VirtAddr`, `structures::paging::PageTable`
[INFO] [stderr]  --> src/bin/test-page-implementation.rs:9:14
[INFO] [stderr]   |
[INFO] [stderr] 9 | use x86_64::{structures::paging::PageTable, VirtAddr};
[INFO] [stderr]   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::panic::PanicInfo`
[INFO] [stderr]  --> src/bin/test-basic-boot.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use core::panic::PanicInfo;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `exit_qemu`, `serial_println`
[INFO] [stderr]  --> src/bin/test-basic-boot.rs:6:15
[INFO] [stderr]   |
[INFO] [stderr] 6 | use rust_os::{exit_qemu, serial_println};
[INFO] [stderr]   |               ^^^^^^^^^  ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/vga_buffer.rs:116:21
[INFO] [stderr]     |
[INFO] [stderr] 116 |                 0x20...0x7E | b'\n' => self.write_byte(byte),
[INFO] [stderr]     |                     ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `structures::paging::PageTable`
[INFO] [stderr]  --> src/bin/test-page-implementation.rs:9:14
[INFO] [stderr]   |
[INFO] [stderr] 9 | use x86_64::{structures::paging::PageTable, VirtAddr};
[INFO] [stderr]   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `structures::paging::PageTable`
[INFO] [stderr]  --> src/main.rs:9:14
[INFO] [stderr]   |
[INFO] [stderr] 9 | use x86_64::{structures::paging::PageTable, VirtAddr};
[INFO] [stderr]   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.15s
[INFO] running `"docker" "inspect" "268db0f147b901671fef0a1b9236aa6410ec584f04458489a1f843541741dc13"`
[INFO] running `"docker" "rm" "-f" "268db0f147b901671fef0a1b9236aa6410ec584f04458489a1f843541741dc13"`
[INFO] [stdout] 268db0f147b901671fef0a1b9236aa6410ec584f04458489a1f843541741dc13