[INFO] cloning repository https://github.com/HoshinoTented/yis-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/HoshinoTented/yis-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHoshinoTented%2Fyis-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHoshinoTented%2Fyis-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bdecde31c0252bb7073e47311f79314c2b1b2797
[INFO] testing HoshinoTented/yis-rs against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHoshinoTented%2Fyis-rs" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/HoshinoTented/yis-rs on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/HoshinoTented/yis-rs
[INFO] finished tweaking git repo https://github.com/HoshinoTented/yis-rs
[INFO] tweaked toml for git repo https://github.com/HoshinoTented/yis-rs written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/HoshinoTented/yis-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 50c314a5a23721fdfd8c9d86f3a5baefb96cb9525818fffa4ed176afcd60fdd8
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "50c314a5a23721fdfd8c9d86f3a5baefb96cb9525818fffa4ed176afcd60fdd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50c314a5a23721fdfd8c9d86f3a5baefb96cb9525818fffa4ed176afcd60fdd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50c314a5a23721fdfd8c9d86f3a5baefb96cb9525818fffa4ed176afcd60fdd8", kill_on_drop: false }`
[INFO] [stdout] 50c314a5a23721fdfd8c9d86f3a5baefb96cb9525818fffa4ed176afcd60fdd8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6dd85638b84ca6a8bca5e1746eea1cf7c2f2ef469d03f7eb6365cf63b9efa6f7
[INFO] running `Command { std: "docker" "start" "-a" "6dd85638b84ca6a8bca5e1746eea1cf7c2f2ef469d03f7eb6365cf63b9efa6f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling yis-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_generics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `const_generics` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(const_generics)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout]   = note: see issue #44580 <https://github.com/rust-lang/rust/issues/44580> for more information
[INFO] [stdout]   = help: consider using `min_const_generics` instead, which is more stable and complete
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Environment`
[INFO] [stdout]  --> src/interpreter/code.rs:6:38
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::interpreter::{Executable, Environment, Interpreter, alias::*};
[INFO] [stdout]   |                                      ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `EOF_ERR`
[INFO] [stdout]  --> src/interpreter/code.rs:7:28
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::error::{Result, EOF_ERR, Error, ErrorKind, CODE_ERR};
[INFO] [stdout]   |                            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ErrorKind`, `Error`
[INFO] [stdout]  --> src/mem.rs:3:28
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::error::{Result, ErrorKind, Error, MEMORY_ERR};
[INFO] [stdout]   |                            ^^^^^^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BitOr`, `Shl`
[INFO] [stdout]  --> src/mem.rs:6:21
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::ops::{Add, Shl, Sub, BitOr, Index, IndexMut};
[INFO] [stdout]   |                     ^^^       ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::array::TryFromSliceError`
[INFO] [stdout]  --> src/mem.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::array::TryFromSliceError;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `yis-rs`
[INFO] [stdout] error: aborting due to previous error; 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "6dd85638b84ca6a8bca5e1746eea1cf7c2f2ef469d03f7eb6365cf63b9efa6f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dd85638b84ca6a8bca5e1746eea1cf7c2f2ef469d03f7eb6365cf63b9efa6f7", kill_on_drop: false }`
[INFO] [stdout] 6dd85638b84ca6a8bca5e1746eea1cf7c2f2ef469d03f7eb6365cf63b9efa6f7