[INFO] updating cached repository holmesmr/blog_os
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/holmesmr/blog_os
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/holmesmr/blog_os" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/holmesmr/blog_os"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/holmesmr/blog_os'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/holmesmr/blog_os" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/holmesmr/blog_os"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/holmesmr/blog_os'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4057c867ce29a8430ba3ce53fcc15f2fea3d30e5
[INFO] sha for GitHub repo holmesmr/blog_os: 4057c867ce29a8430ba3ce53fcc15f2fea3d30e5
[INFO] validating manifest of holmesmr/blog_os on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of holmesmr/blog_os on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing holmesmr/blog_os
[INFO] finished frobbing holmesmr/blog_os
[INFO] frobbed toml for holmesmr/blog_os written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/holmesmr/blog_os/Cargo.toml
[INFO] started frobbing holmesmr/blog_os
[INFO] finished frobbing holmesmr/blog_os
[INFO] frobbed toml for holmesmr/blog_os written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/holmesmr/blog_os/Cargo.toml
[INFO] crate holmesmr/blog_os already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking holmesmr/blog_os against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-4/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/holmesmr/blog_os:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 720d92fbbf2808719effec0d05433b8ffcd842449bf2377f8d81acc67b7748c4
[INFO] running `"docker" "start" "-a" "720d92fbbf2808719effec0d05433b8ffcd842449bf2377f8d81acc67b7748c4"`
[INFO] [stderr]     Checking zero v0.1.2
[INFO] [stderr]     Checking font8x8 v0.2.4
[INFO] [stderr]     Checking cpuio v0.2.0
[INFO] [stderr]     Checking lazy_static v1.2.0
[INFO] [stderr]     Checking array-init v0.0.3
[INFO] [stderr]     Checking pic8259_simple v0.1.1
[INFO] [stderr]    Compiling raw-cpuid v6.1.0
[INFO] [stderr]    Compiling skeptic v0.5.0
[INFO] [stderr]     Checking xmas-elf v0.6.2
[INFO] [stderr]    Compiling fixedvec v0.2.3
[INFO] [stderr]     Checking bootloader v0.3.12
[INFO] [stderr]     Checking x86_64 v0.4.1
[INFO] [stderr]     Checking blog_os v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `crate::util::halt`
[INFO] [stderr]  --> src/interrupts.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::util::halt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/vga_buffer.rs:106:21
[INFO] [stderr]     |
[INFO] [stderr] 106 |                 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: unused import: `crate::util::halt`
[INFO] [stderr]  --> src/interrupts.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::util::halt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/vga_buffer.rs:106:21
[INFO] [stderr]     |
[INFO] [stderr] 106 |                 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: unused import: `crate::util::halt`
[INFO] [stderr]  --> src/interrupts.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::util::halt;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/vga_buffer.rs:106:21
[INFO] [stderr]     |
[INFO] [stderr] 106 |                 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:168:13
[INFO] [stderr]     |
[INFO] [stderr] 168 |         use std::boxed::Box;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: duplicate lang item in crate `blog_os`: `panic_impl`.
[INFO] [stderr]   |
[INFO] [stderr]   = note: first defined in crate `std`.
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: duplicate lang item in crate `blog_os`: `panic_impl`.
[INFO] [stderr] error: Could not compile `blog_os`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr]   |
[INFO] [stderr]   = note: first defined in crate `std`.
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `blog_os`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: duplicate lang item in crate `blog_os`: `panic_impl`.
[INFO] [stderr]   |
[INFO] [stderr]   = note: first defined in crate `std`.
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `blog_os`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: duplicate lang item in crate `blog_os`: `panic_impl`.
[INFO] [stderr]   |
[INFO] [stderr]   = note: first defined in crate `std`.
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `blog_os`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: duplicate lang item in crate `blog_os`: `panic_impl`.
[INFO] [stderr]   |
[INFO] [stderr]   = note: first defined in crate `std`.
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `blog_os`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "720d92fbbf2808719effec0d05433b8ffcd842449bf2377f8d81acc67b7748c4"`
[INFO] running `"docker" "rm" "-f" "720d92fbbf2808719effec0d05433b8ffcd842449bf2377f8d81acc67b7748c4"`
[INFO] [stdout] 720d92fbbf2808719effec0d05433b8ffcd842449bf2377f8d81acc67b7748c4