[INFO] updating cached repository Xe/novos
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Xe/novos
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Xe/novos" "work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/Xe/novos"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/Xe/novos'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Xe/novos" "work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/Xe/novos"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/Xe/novos'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 275aa00c76c255375cc53cb4ac99230bcb7d2bd9
[INFO] sha for GitHub repo Xe/novos: 275aa00c76c255375cc53cb4ac99230bcb7d2bd9
[INFO] validating manifest of Xe/novos on toolchain master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Xe/novos on toolchain try#58b21121d0b447ceb3f1a655155d802191acf044
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Xe/novos
[INFO] finished frobbing Xe/novos
[INFO] frobbed toml for Xe/novos written to work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/Xe/novos/Cargo.toml
[INFO] started frobbing Xe/novos
[INFO] finished frobbing Xe/novos
[INFO] frobbed toml for Xe/novos written to work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/Xe/novos/Cargo.toml
[INFO] crate Xe/novos already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] checking Xe/novos against master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504 for pr-61100
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-61100/worker-1/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/Xe/novos:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] dc698aa922d83ba7d68b6867b2634edfdea5ff19a8baefc22c1cf8bf7ca56bbe
[INFO] running `"docker" "start" "-a" "dc698aa922d83ba7d68b6867b2634edfdea5ff19a8baefc22c1cf8bf7ca56bbe"`
[INFO] [stderr]     Checking pc-keyboard v0.3.1
[INFO] [stderr]     Checking x86_64 v0.4.1
[INFO] [stderr]     Checking novos v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `Box` is imported redundantly
[INFO] [stderr]    --> src/vga_buffer.rs:154:13
[INFO] [stderr]     |
[INFO] [stderr] 154 |         use std::boxed::Box;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `translate_addr`
[INFO] [stderr]   --> src/bin/test-paging.rs:26:31
[INFO] [stderr]    |
[INFO] [stderr] 26 |     use novos::memory::{self, translate_addr};
[INFO] [stderr]    |                               ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `EmptyFrameAllocator`
[INFO] [stderr]   --> src/main.rs:23:49
[INFO] [stderr]    |
[INFO] [stderr] 23 |     use novos::memory::{create_example_mapping, EmptyFrameAllocator};
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `recursive_page_table`
[INFO] [stderr]   --> src/main.rs:30:13
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let mut recursive_page_table = unsafe {
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_recursive_page_table`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:30:9
[INFO] [stderr]    |
[INFO] [stderr] 30 |     let mut recursive_page_table = unsafe {
[INFO] [stderr]    |         ----^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.17s
[INFO] running `"docker" "inspect" "dc698aa922d83ba7d68b6867b2634edfdea5ff19a8baefc22c1cf8bf7ca56bbe"`
[INFO] running `"docker" "rm" "-f" "dc698aa922d83ba7d68b6867b2634edfdea5ff19a8baefc22c1cf8bf7ca56bbe"`
[INFO] [stdout] dc698aa922d83ba7d68b6867b2634edfdea5ff19a8baefc22c1cf8bf7ca56bbe