[INFO] cloning repository https://github.com/niklabh/RustGreenThreads
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/niklabh/RustGreenThreads" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fniklabh%2FRustGreenThreads", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fniklabh%2FRustGreenThreads'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7be5265e54fb61ae6ee9fff8e065a890f41d1740
[INFO] testing niklabh/RustGreenThreads/7be5265e54fb61ae6ee9fff8e065a890f41d1740 against 1.84.0 for beta-1.85-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fniklabh%2FRustGreenThreads" "/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/niklabh/RustGreenThreads on toolchain 1.84.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.84.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/niklabh/RustGreenThreads
[INFO] finished tweaking git repo https://github.com/niklabh/RustGreenThreads
[INFO] tweaked toml for git repo https://github.com/niklabh/RustGreenThreads written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/niklabh/RustGreenThreads 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" "+1.84.0" "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@sha256:86ea7c7af713d31e8cfdb68a6d0db50b5cf7cbeecde3d112f9f257f747318d36" "/opt/rustwide/cargo-home/bin/cargo" "+1.84.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0e5484ed039af2b1134bca151d4ad0d02f57a77ba2257f4a07b7efacf6cd39c8
[INFO] running `Command { std: "docker" "start" "-a" "0e5484ed039af2b1134bca151d4ad0d02f57a77ba2257f4a07b7efacf6cd39c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0e5484ed039af2b1134bca151d4ad0d02f57a77ba2257f4a07b7efacf6cd39c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e5484ed039af2b1134bca151d4ad0d02f57a77ba2257f4a07b7efacf6cd39c8", kill_on_drop: false }`
[INFO] [stdout] 0e5484ed039af2b1134bca151d4ad0d02f57a77ba2257f4a07b7efacf6cd39c8
[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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:86ea7c7af713d31e8cfdb68a6d0db50b5cf7cbeecde3d112f9f257f747318d36" "/opt/rustwide/cargo-home/bin/cargo" "+1.84.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb07bff6b346b92841c474d68ad52d3f9665d76401d10901c3d6637aabe8f508
[INFO] running `Command { std: "docker" "start" "-a" "bb07bff6b346b92841c474d68ad52d3f9665d76401d10901c3d6637aabe8f508", kill_on_drop: false }`
[INFO] [stderr]    Compiling RustGreenThread v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: cannot find macro `asm` in this scope
[INFO] [stdout]    --> src/main.rs:155:5
[INFO] [stdout]     |
[INFO] [stdout] 155 |     asm!("
[INFO] [stdout]     |     ^^^
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this macro
[INFO] [stdout]     |
[INFO] [stdout] 3   + use std::arch::asm;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(asm)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(naked_functions)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: Rust ABI is unsupported in naked functions
[INFO] [stdout]    --> src/main.rs:136:1
[INFO] [stdout]     |
[INFO] [stdout] 136 | fn guard() {
[INFO] [stdout]     | ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(undefined_naked_function_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0787]: naked functions must contain a single `naked_asm!` invocation
[INFO] [stdout]    --> src/main.rs:136:1
[INFO] [stdout]     |
[INFO] [stdout] 136 | fn guard() {
[INFO] [stdout]     | ^^^^^^^^^^
[INFO] [stdout] 137 |     unsafe {
[INFO] [stdout] 138 |         let rt_ptr = RUNTIME as *mut Runtime;
[INFO] [stdout]     |         ------------------------------------- not allowed in naked functions
[INFO] [stdout] 139 |         let rt = &mut *rt_ptr;
[INFO] [stdout]     |         ---------------------- not allowed in naked functions
[INFO] [stdout] 140 |         println!("THREAD {} FINISHED.", rt.threads[rt.current].id);
[INFO] [stdout]     |         ---------------------------------------------------------- not allowed in naked functions
[INFO] [stdout] 141 |         rt.t_return();
[INFO] [stdout]     |         -------------- not allowed in naked functions
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: Rust ABI is unsupported in naked functions
[INFO] [stdout]    --> src/main.rs:154:1
[INFO] [stdout]     |
[INFO] [stdout] 154 | unsafe fn switch(old: *mut ThreadContext, new: *const ThreadContext) {
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `asm` has been stable since 1.59.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(asm)]
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0787.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `RustGreenThread` (bin "RustGreenThread") due to 4 previous errors; 3 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "bb07bff6b346b92841c474d68ad52d3f9665d76401d10901c3d6637aabe8f508", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb07bff6b346b92841c474d68ad52d3f9665d76401d10901c3d6637aabe8f508", kill_on_drop: false }`
[INFO] [stdout] bb07bff6b346b92841c474d68ad52d3f9665d76401d10901c3d6637aabe8f508