[INFO] cloning repository https://github.com/msjtw/rust-baremetal
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/msjtw/rust-baremetal" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmsjtw%2Frust-baremetal", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmsjtw%2Frust-baremetal'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9d4690aedea65265e2832d2ec8175036e84589f3
[INFO] checking msjtw/rust-baremetal against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmsjtw%2Frust-baremetal" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-0-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/msjtw/rust-baremetal
[INFO] finished tweaking git repo https://github.com/msjtw/rust-baremetal
[INFO] tweaked toml for git repo https://github.com/msjtw/rust-baremetal written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/msjtw/rust-baremetal on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/msjtw/rust-baremetal 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded buddy_system_allocator v0.12.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ea6b4fa214f25f27bebeb547f103f1c5cbb3f328b736238b62dde8299f64216
[INFO] running `Command { std: "docker" "start" "-a" "1ea6b4fa214f25f27bebeb547f103f1c5cbb3f328b736238b62dde8299f64216", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ea6b4fa214f25f27bebeb547f103f1c5cbb3f328b736238b62dde8299f64216", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ea6b4fa214f25f27bebeb547f103f1c5cbb3f328b736238b62dde8299f64216", kill_on_drop: false }`
[INFO] [stdout] 1ea6b4fa214f25f27bebeb547f103f1c5cbb3f328b736238b62dde8299f64216
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e2c3f8f63bc519c56b63d6640acb318486394becfcc30337ed9916731f9140b
[INFO] running `Command { std: "docker" "start" "-a" "6e2c3f8f63bc519c56b63d6640acb318486394becfcc30337ed9916731f9140b", kill_on_drop: false }`
[INFO] [stderr]     Checking spin v0.10.0
[INFO] [stderr]     Checking buddy_system_allocator v0.12.0
[INFO] [stderr]     Checking rust-baremetal v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(ascii_char)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: formatting may not be suitable for sub-register argument
[INFO] [stdout]    --> src/csr.rs:17:17
[INFO] [stdout]     |
[INFO] [stdout]  17 |                 concat!("csrrw x0, ", stringify!($csr), ", {0}"),
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]    ::: src/kmemory.rs:221:35
[INFO] [stdout]     |
[INFO] [stdout] 221 |         unsafe { write_csr!(satp, satp) };
[INFO] [stdout]     |                  ----------------------
[INFO] [stdout]     |                  |                |
[INFO] [stdout]     |                  |                for this argument
[INFO] [stdout]     |                  in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = help: use `{0:e}` to have the register formatted as `eax` (for 32-bit values)
[INFO] [stdout]     = help: or use `{0:r}` to keep the default formatting of `rax` (for 64-bit values)
[INFO] [stdout]     = note: `#[warn(asm_sub_register)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `write_csr` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-baremetal` (bin "main") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "6e2c3f8f63bc519c56b63d6640acb318486394becfcc30337ed9916731f9140b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e2c3f8f63bc519c56b63d6640acb318486394becfcc30337ed9916731f9140b", kill_on_drop: false }`
[INFO] [stdout] 6e2c3f8f63bc519c56b63d6640acb318486394becfcc30337ed9916731f9140b
