[INFO] cloning repository https://github.com/Sanshit-sagar/RustOS
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Sanshit-sagar/RustOS" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSanshit-sagar%2FRustOS", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSanshit-sagar%2FRustOS'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 10ed0c75e2a9f5130a611f0d5d4b1af5aa4845ef
[INFO] checking Sanshit-sagar/RustOS against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSanshit-sagar%2FRustOS" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] [stderr] Updating files:  51% (548/1062)
Updating files:  52% (553/1062)
Updating files:  53% (563/1062)
Updating files:  54% (574/1062)
Updating files:  55% (585/1062)
Updating files:  56% (595/1062)
Updating files:  57% (606/1062)
Updating files:  58% (616/1062)
Updating files:  59% (627/1062)
Updating files:  60% (638/1062)
Updating files:  61% (648/1062)
Updating files:  62% (659/1062)
Updating files:  63% (670/1062)
Updating files:  64% (680/1062)
Updating files:  65% (691/1062)
Updating files:  66% (701/1062)
Updating files:  67% (712/1062)
Updating files:  68% (723/1062)
Updating files:  69% (733/1062)
Updating files:  70% (744/1062)
Updating files:  71% (755/1062)
Updating files:  72% (765/1062)
Updating files:  73% (776/1062)
Updating files:  74% (786/1062)
Updating files:  75% (797/1062)
Updating files:  76% (808/1062)
Updating files:  77% (818/1062)
Updating files:  78% (829/1062)
Updating files:  79% (839/1062)
Updating files:  80% (850/1062)
Updating files:  81% (861/1062)
Updating files:  82% (871/1062)
Updating files:  83% (882/1062)
Updating files:  84% (893/1062)
Updating files:  85% (903/1062)
Updating files:  86% (914/1062)
Updating files:  87% (924/1062)
Updating files:  88% (935/1062)
Updating files:  89% (946/1062)
Updating files:  90% (956/1062)
Updating files:  91% (967/1062)
Updating files:  92% (978/1062)
Updating files:  93% (988/1062)
Updating files:  94% (999/1062)
Updating files:  95% (1009/1062)
Updating files:  96% (1020/1062)
Updating files:  97% (1031/1062)
Updating files:  98% (1041/1062)
Updating files:  99% (1052/1062)
Updating files: 100% (1062/1062)
Updating files: 100% (1062/1062), done.
[INFO] validating manifest of git repo https://github.com/Sanshit-sagar/RustOS on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-10/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/Sanshit-sagar/RustOS
[INFO] removed 0 missing tests
[INFO] finished tweaking git repo https://github.com/Sanshit-sagar/RustOS
[INFO] tweaked toml for git repo https://github.com/Sanshit-sagar/RustOS written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/Sanshit-sagar/RustOS already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2dc4382805a99c3bfee6ec6a8bdaad2e8984024b0be9600367cee2ac0b7bf946
[INFO] running `Command { std: "docker" "start" "-a" "2dc4382805a99c3bfee6ec6a8bdaad2e8984024b0be9600367cee2ac0b7bf946", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2dc4382805a99c3bfee6ec6a8bdaad2e8984024b0be9600367cee2ac0b7bf946", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dc4382805a99c3bfee6ec6a8bdaad2e8984024b0be9600367cee2ac0b7bf946", kill_on_drop: false }`
[INFO] [stdout] 2dc4382805a99c3bfee6ec6a8bdaad2e8984024b0be9600367cee2ac0b7bf946
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6ae2cce8daa5e7d02c6178c8cdcfc091ff6e445473ccd4c8004784d5a55c42a9
[INFO] running `Command { std: "docker" "start" "-a" "6ae2cce8daa5e7d02c6178c8cdcfc091ff6e445473ccd4c8004784d5a55c42a9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking scopeguard v1.1.0
[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 cpuio v0.3.0
[INFO] [stderr]     Checking rlibc v1.0.0
[INFO] [stderr]     Checking volatile v0.2.7
[INFO] [stderr]     Checking pc-keyboard v0.5.1
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/cpuio-0.3.0/src/lib.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(llvm_asm, const_fn)]
[INFO] [stdout]   |                      ^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: split into finer-grained feature gates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cpuio`
[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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6ae2cce8daa5e7d02c6178c8cdcfc091ff6e445473ccd4c8004784d5a55c42a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ae2cce8daa5e7d02c6178c8cdcfc091ff6e445473ccd4c8004784d5a55c42a9", kill_on_drop: false }`
[INFO] [stdout] 6ae2cce8daa5e7d02c6178c8cdcfc091ff6e445473ccd4c8004784d5a55c42a9