[INFO] crate rs64-periph 0.1.0 is already in cache
[INFO] testing rs64-periph-0.1.0 against 1.44.0 for beta-1.45-1
[INFO] extracting crate rs64-periph 0.1.0 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate rs64-periph 0.1.0 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate rs64-periph 0.1.0
[INFO] finished tweaking crates.io crate rs64-periph 0.1.0
[INFO] tweaked toml for crates.io crate rs64-periph 0.1.0 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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=warn" "-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" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3eb0f132f9fb15d9556ae62e27ff497d2a4c5846c2b2e2486a06475486828d5e
[INFO] running `"docker" "start" "-a" "3eb0f132f9fb15d9556ae62e27ff497d2a4c5846c2b2e2486a06475486828d5e"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling volatile v0.2.6
[INFO] [stderr]    Compiling rs64-periph v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(asm)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(lang_items)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(const_fn)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![feature(exclusive_range_pattern)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #![feature(naked_functions)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | #![feature(start)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'asm': the syntax of asm! will change soon, use llvm_asm! to avoid breakage
[INFO] [stderr]  --> src/mips.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     asm!("mtc0 $0, $$9"
[INFO] [stderr]   |     ^^^ help: replace the use of the deprecated item: `llvm_asm`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'asm': the syntax of asm! will change soon, use llvm_asm! to avoid breakage
[INFO] [stderr]   --> src/mips.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     asm!("mfc0 $0, $$9"
[INFO] [stderr]    |     ^^^ help: replace the use of the deprecated item: `llvm_asm`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'asm': the syntax of asm! will change soon, use llvm_asm! to avoid breakage
[INFO] [stderr]   --> src/mips.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     asm!("mtc0 $0, $$11"
[INFO] [stderr]    |     ^^^ help: replace the use of the deprecated item: `llvm_asm`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'asm': the syntax of asm! will change soon, use llvm_asm! to avoid breakage
[INFO] [stderr]   --> src/mips.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     asm!("mfc0 $0, $$11"
[INFO] [stderr]    |     ^^^ help: replace the use of the deprecated item: `llvm_asm`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'asm': the syntax of asm! will change soon, use llvm_asm! to avoid breakage
[INFO] [stderr]   --> src/mips.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     asm!("mfc0 $0, $$12"
[INFO] [stderr]    |     ^^^ help: replace the use of the deprecated item: `llvm_asm`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'asm': the syntax of asm! will change soon, use llvm_asm! to avoid breakage
[INFO] [stderr]   --> src/mips.rs:39:5
[INFO] [stderr]    |
[INFO] [stderr] 39 |     asm!("mfc0 $0, $$13"
[INFO] [stderr]    |     ^^^ help: replace the use of the deprecated item: `llvm_asm`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'asm': the syntax of asm! will change soon, use llvm_asm! to avoid breakage
[INFO] [stderr]   --> src/mips.rs:54:13
[INFO] [stderr]    |
[INFO] [stderr] 54 |             asm!("cache 0x15,($0)"
[INFO] [stderr]    |             ^^^ help: replace the use of the deprecated item: `llvm_asm`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 6 previous errors; 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: could not compile `rs64-periph`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "3eb0f132f9fb15d9556ae62e27ff497d2a4c5846c2b2e2486a06475486828d5e"`
[INFO] running `"docker" "rm" "-f" "3eb0f132f9fb15d9556ae62e27ff497d2a4c5846c2b2e2486a06475486828d5e"`
[INFO] [stdout] 3eb0f132f9fb15d9556ae62e27ff497d2a4c5846c2b2e2486a06475486828d5e