[INFO] cloning repository https://github.com/Error1000/ron
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Error1000/ron" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FError1000%2Fron", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FError1000%2Fron'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7b0aab38a71d22ae790420278f370145f4d5ad4b
[INFO] checking Error1000/ron against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FError1000%2Fron" "/workspace/builds/worker-50/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-50/source'...
[INFO] [stderr] done.
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[INFO] validating manifest of git repo https://github.com/Error1000/ron on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-50/source/.cargo/config
[INFO] started tweaking git repo https://github.com/Error1000/ron
[INFO] finished tweaking git repo https://github.com/Error1000/ron
[INFO] tweaked toml for git repo https://github.com/Error1000/ron written to /workspace/builds/worker-50/source/Cargo.toml
[INFO] crate git repo https://github.com/Error1000/ron already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded wyz v0.4.0
[INFO] [stderr]   Downloaded bitvec v0.22.3
[INFO] [stderr]   Downloaded funty v1.2.0
[INFO] [stderr]   Downloaded packed_struct_codegen v0.10.0
[INFO] [stderr]   Downloaded packed_struct v0.10.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 63a0d543e07c56d60a4ef522c0d1baef9c24941499db8decf784d8ef6da1dbfc
[INFO] running `Command { std: "docker" "start" "-a" "63a0d543e07c56d60a4ef522c0d1baef9c24941499db8decf784d8ef6da1dbfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63a0d543e07c56d60a4ef522c0d1baef9c24941499db8decf784d8ef6da1dbfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63a0d543e07c56d60a4ef522c0d1baef9c24941499db8decf784d8ef6da1dbfc", kill_on_drop: false }`
[INFO] [stdout] 63a0d543e07c56d60a4ef522c0d1baef9c24941499db8decf784d8ef6da1dbfc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7615c1ad6215b804597cdae8bd7c55484a373a61dc24eb6f4ddb5c6f79dc5ae4
[INFO] running `Command { std: "docker" "start" "-a" "7615c1ad6215b804597cdae8bd7c55484a373a61dc24eb6f4ddb5c6f79dc5ae4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling radium v0.6.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling syn v1.0.77
[INFO] [stderr]    Compiling packed_struct v0.10.0
[INFO] [stderr]    Compiling cc v1.0.70
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking funty v1.2.0
[INFO] [stderr]     Checking wyz v0.4.0
[INFO] [stderr]     Checking bitvec v0.22.3
[INFO] [stderr]    Compiling ron v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr] warning: cargo:rustc-link-arg requires -Zextra-link-arg flag
[INFO] [stderr] warning: cargo:rustc-link-arg requires -Zextra-link-arg flag
[INFO] [stderr] warning: cargo:rustc-link-arg requires -Zextra-link-arg flag
[INFO] [stderr] warning: cargo:rustc-link-arg requires -Zextra-link-arg flag
[INFO] [stderr] warning: cargo:rustc-link-arg requires -Zextra-link-arg flag
[INFO] [stderr] warning: cargo:rustc-link-arg requires -Zextra-link-arg flag
[INFO] [stderr]    Compiling packed_struct_codegen v0.10.0
[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(bench_black_box)]
[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:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(asm)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ops::Add`
[INFO] [stdout]  --> src/virtmem.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::{marker::PhantomData, ops::Add};
[INFO] [stdout]   |                                 ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/main.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | fn panic(_p: &::core::panic::PanicInfo) -> ! {
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the lang item is first defined in crate `std` (which `test` depends on)
[INFO] [stdout]    = note: first definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-008055cc7d873802.rlib
[INFO] [stdout]    = note: second definition in the local crate (`ron`)
[INFO] [stdout] 
[INFO] [stdout] 
[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(bench_black_box)]
[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:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(asm)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ops::Add`
[INFO] [stdout]  --> src/virtmem.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::{marker::PhantomData, ops::Add};
[INFO] [stdout]   |                                 ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:242:5
[INFO] [stdout]     |
[INFO] [stdout] 146 | /     loop {
[INFO] [stdout] 147 | |         sub_x_next_time = false;
[INFO] [stdout] 148 | |         if x >= 0{ unsafe{ vga.set_cursor_position(x as usize, y as usize); }}
[INFO] [stdout] 149 | |         let b = unsafe { ps2.read_byte() };
[INFO] [stdout] ...   |
[INFO] [stdout] 239 | |         }
[INFO] [stdout] 240 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 241 | 
[INFO] [stdout] 242 | /     loop {
[INFO] [stdout] 243 | |         unsafe {
[INFO] [stdout] 244 | |             asm!("hlt");
[INFO] [stdout] 245 | |         }
[INFO] [stdout] 246 | |     }
[INFO] [stdout]     | |_____^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/main.rs:242:5
[INFO] [stdout]     |
[INFO] [stdout] 146 | /     loop {
[INFO] [stdout] 147 | |         sub_x_next_time = false;
[INFO] [stdout] 148 | |         if x >= 0{ unsafe{ vga.set_cursor_position(x as usize, y as usize); }}
[INFO] [stdout] 149 | |         let b = unsafe { ps2.read_byte() };
[INFO] [stdout] ...   |
[INFO] [stdout] 239 | |         }
[INFO] [stdout] 240 | |     }
[INFO] [stdout]     | |_____- any code following this expression is unreachable
[INFO] [stdout] 241 | 
[INFO] [stdout] 242 | /     loop {
[INFO] [stdout] 243 | |         unsafe {
[INFO] [stdout] 244 | |             asm!("hlt");
[INFO] [stdout] 245 | |         }
[INFO] [stdout] 246 | |     }
[INFO] [stdout]     | |_____^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] The following warnings were emitted during compilation:
[INFO] [stdout] error: aborting due to 3 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] Some errors have detailed explanations: E0152, E0554.
[INFO] [stdout] 
[INFO] [stderr] warning: cargo:rustc-link-arg requires -Zextra-link-arg flag
[INFO] [stdout] For more information about an error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] warning: cargo:rustc-link-arg requires -Zextra-link-arg flag
[INFO] [stdout] error: aborting due to 2 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: cargo:rustc-link-arg requires -Zextra-link-arg flag
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] warning: cargo:rustc-link-arg requires -Zextra-link-arg flag
[INFO] [stderr] warning: cargo:rustc-link-arg requires -Zextra-link-arg flag
[INFO] [stderr] warning: cargo:rustc-link-arg requires -Zextra-link-arg flag
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `ron` due to 4 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] The following warnings were emitted during compilation:
[INFO] [stderr] 
[INFO] [stderr] warning: cargo:rustc-link-arg requires -Zextra-link-arg flag
[INFO] [stderr] warning: cargo:rustc-link-arg requires -Zextra-link-arg flag
[INFO] [stderr] warning: cargo:rustc-link-arg requires -Zextra-link-arg flag
[INFO] [stderr] warning: cargo:rustc-link-arg requires -Zextra-link-arg flag
[INFO] [stderr] warning: cargo:rustc-link-arg requires -Zextra-link-arg flag
[INFO] [stderr] warning: cargo:rustc-link-arg requires -Zextra-link-arg flag
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "7615c1ad6215b804597cdae8bd7c55484a373a61dc24eb6f4ddb5c6f79dc5ae4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7615c1ad6215b804597cdae8bd7c55484a373a61dc24eb6f4ddb5c6f79dc5ae4", kill_on_drop: false }`
[INFO] [stdout] 7615c1ad6215b804597cdae8bd7c55484a373a61dc24eb6f4ddb5c6f79dc5ae4