[INFO] cloning repository https://github.com/mochi-sann/mochi_os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mochi-sann/mochi_os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmochi-sann%2Fmochi_os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmochi-sann%2Fmochi_os'...
[INFO] [stderr] error: copy-fd: write returned: No space left on device
[INFO] [stderr] fatal: cannot copy '/usr/share/git-core/templates/hooks/commit-msg.sample' to '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmochi-sann%2Fmochi_os/hooks/commit-msg.sample': No space left on device
[WARN] Retrying crate fetch in 3 seconds (attempt 1)
[INFO] cloning repository https://github.com/mochi-sann/mochi_os
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mochi-sann/mochi_os" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmochi-sann%2Fmochi_os", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmochi-sann%2Fmochi_os'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9fcde19b727cf10fd87ff5b029e4a5d1fed9444a
[INFO] testing mochi-sann/mochi_os against master#552a959051cebf8f88a8f558399baf733bec9ce0 for pr-136932
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmochi-sann%2Fmochi_os" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mochi-sann/mochi_os on toolchain 552a959051cebf8f88a8f558399baf733bec9ce0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-2-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/mochi-sann/mochi_os
[INFO] finished tweaking git repo https://github.com/mochi-sann/mochi_os
[INFO] tweaked toml for git repo https://github.com/mochi-sann/mochi_os written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mochi-sann/mochi_os already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 60d3fb77ed2a2af79d070dc3c494bfd55a50b7908999bf704a15de1b75055525
[INFO] running `Command { std: "docker" "start" "-a" "60d3fb77ed2a2af79d070dc3c494bfd55a50b7908999bf704a15de1b75055525", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60d3fb77ed2a2af79d070dc3c494bfd55a50b7908999bf704a15de1b75055525", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60d3fb77ed2a2af79d070dc3c494bfd55a50b7908999bf704a15de1b75055525", kill_on_drop: false }`
[INFO] [stdout] 60d3fb77ed2a2af79d070dc3c494bfd55a50b7908999bf704a15de1b75055525
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+552a959051cebf8f88a8f558399baf733bec9ce0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cff39eadd1831f8ce1097ac81deaea860c500f183c70a887a2182534307580ed
[INFO] running `Command { std: "docker" "start" "-a" "cff39eadd1831f8ce1097ac81deaea860c500f183c70a887a2182534307580ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling bootloader v0.9.28
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling volatile v0.2.7
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling mochi_os v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: an inner attribute is not permitted in this context
[INFO] [stdout]   --> src/main.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 |   #![reexport_test_harness_main = "test_main"]
[INFO] [stdout]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 13 | / pub extern "C" fn _start() -> ! {
[INFO] [stdout] 14 | |
[INFO] [stdout] 15 | |     use core::fmt::Write; 
[INFO] [stdout] ...  |
[INFO] [stdout] 22 | |     loop {}
[INFO] [stdout] 23 | | }
[INFO] [stdout]    | |_- the inner attribute doesn't annotate this function
[INFO] [stdout]    |
[INFO] [stdout]    = note: inner attributes, like `#![no_std]`, annotate the item enclosing them, and are usually found at the beginning of source files
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `vga_buffer::print_something`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use vga_buffer::print_something;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `core::fmt::Write`
[INFO] [stdout]   --> src/main.rs:15:9
[INFO] [stdout]    |
[INFO] [stdout] 15 |     use core::fmt::Write; 
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `mochi_os` (bin "mochi_os") due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "cff39eadd1831f8ce1097ac81deaea860c500f183c70a887a2182534307580ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cff39eadd1831f8ce1097ac81deaea860c500f183c70a887a2182534307580ed", kill_on_drop: false }`
[INFO] [stdout] cff39eadd1831f8ce1097ac81deaea860c500f183c70a887a2182534307580ed