[INFO] cloning repository https://github.com/ejlangev/rust_os
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ejlangev/rust_os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fejlangev%2Frust_os"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fejlangev%2Frust_os'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c103789ef4f17e09976108402bc57b5fe09534b6
[INFO] checking ejlangev/rust_os against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fejlangev%2Frust_os" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ejlangev/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/ejlangev/rust_os
[INFO] finished tweaking git repo https://github.com/ejlangev/rust_os
[INFO] tweaked toml for git repo https://github.com/ejlangev/rust_os written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/ejlangev/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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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] 8b8ad60f07f6e6a345736dcd3330a796f896efa05b0548f4c89ea8103acb6df0
[INFO] running `"docker" "start" "-a" "8b8ad60f07f6e6a345736dcd3330a796f896efa05b0548f4c89ea8103acb6df0"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling remove_dir_all v0.5.1
[INFO] [stderr]     Checking os_bootinfo v0.2.1
[INFO] [stderr]     Checking bit_field v0.9.0
[INFO] [stderr]     Checking ux v0.1.2
[INFO] [stderr]     Checking usize_conversions v0.2.0
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking font8x8 v0.2.4
[INFO] [stderr]    Compiling libc v0.2.44
[INFO] [stderr]     Checking array-init v0.0.3
[INFO] [stderr]    Compiling rand v0.4.3
[INFO] [stderr]    Compiling tempdir v0.3.7
[INFO] [stderr]    Compiling skeptic v0.5.0
[INFO] [stderr]    Compiling fixedvec v0.2.3
[INFO] [stderr]     Checking bootloader v0.3.7
[INFO] [stderr]     Checking ethan_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/vga_buffer/mod.rs:75:50
[INFO] [stderr]    |
[INFO] [stderr] 75 |   fn with_color(&mut self, color: ColorCode, f: &Fn(&mut Self)) {
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Self)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/vga_buffer/mod.rs:86:13
[INFO] [stderr]    |
[INFO] [stderr] 86 |         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: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Checking x86_64 v0.2.14
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/vga_buffer/mod.rs:75:50
[INFO] [stderr]    |
[INFO] [stderr] 75 |   fn with_color(&mut self, color: ColorCode, f: &Fn(&mut Self)) {
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut Self)`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/vga_buffer/mod.rs:86:13
[INFO] [stderr]    |
[INFO] [stderr] 86 |         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: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.44s
[INFO] running `"docker" "inspect" "8b8ad60f07f6e6a345736dcd3330a796f896efa05b0548f4c89ea8103acb6df0"`
[INFO] running `"docker" "rm" "-f" "8b8ad60f07f6e6a345736dcd3330a796f896efa05b0548f4c89ea8103acb6df0"`
[INFO] [stdout] 8b8ad60f07f6e6a345736dcd3330a796f896efa05b0548f4c89ea8103acb6df0