[INFO] cloning repository https://github.com/tarberd/playos
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tarberd/playos" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftarberd%2Fplayos", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftarberd%2Fplayos'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d2023ca32dbef26c55670daf99d7ca31766a42e1
[INFO] checking tarberd/playos against master#cfbc6d4cf1acbac5c025acf8ed68929caa551df3 for pr-75494-beta
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftarberd%2Fplayos" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tarberd/playos on toolchain cfbc6d4cf1acbac5c025acf8ed68929caa551df3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-9/source/.cargo/config
[INFO] started tweaking git repo https://github.com/tarberd/playos
[INFO] finished tweaking git repo https://github.com/tarberd/playos
[INFO] tweaked toml for git repo https://github.com/tarberd/playos written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/tarberd/playos already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "metadata" "--no-deps" "--format-version=1", 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] f12eb555171311f16b7d967ce01c98e1fd6e229f3faac3ddbc3ee1c565df93db
[INFO] running `Command { std: "docker" "start" "-a" "f12eb555171311f16b7d967ce01c98e1fd6e229f3faac3ddbc3ee1c565df93db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f12eb555171311f16b7d967ce01c98e1fd6e229f3faac3ddbc3ee1c565df93db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f12eb555171311f16b7d967ce01c98e1fd6e229f3faac3ddbc3ee1c565df93db", kill_on_drop: false }`
[INFO] [stdout] f12eb555171311f16b7d967ce01c98e1fd6e229f3faac3ddbc3ee1c565df93db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4d88651566d5769050f1e3b7a00f443dda4feb7fad3c5370d07bffec60759122
[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" "4d88651566d5769050f1e3b7a00f443dda4feb7fad3c5370d07bffec60759122", kill_on_drop: false }`
[INFO] [stderr]     Checking playos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:5:1
[INFO] [stdout]    |
[INFO] [stdout] 5  | / #![feature(
[INFO] [stdout] 6  | |     panic_info_message,
[INFO] [stdout] 7  | |     allocator_api,
[INFO] [stdout] 8  | |     alloc_error_handler,
[INFO] [stdout] ...  |
[INFO] [stdout] 12 | |     const_raw_ptr_to_usize_cast
[INFO] [stdout] 13 | | )]
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | #![feature(custom_test_frameworks)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: language item required, but not found: `eh_personality`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:5:1
[INFO] [stdout]    |
[INFO] [stdout] 5  | / #![feature(
[INFO] [stdout] 6  | |     panic_info_message,
[INFO] [stdout] 7  | |     allocator_api,
[INFO] [stdout] 8  | |     alloc_error_handler,
[INFO] [stdout] ...  |
[INFO] [stdout] 12 | |     const_raw_ptr_to_usize_cast
[INFO] [stdout] 13 | | )]
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | #![feature(custom_test_frameworks)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: language item required, but not found: `eh_personality`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/lib.rs:109:5
[INFO] [stdout]     |
[INFO] [stdout] 106 |         switch_to_user(frame, mepc, satp);
[INFO] [stdout]     |         --------------------------------- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 109 |     panic!("Did not switch context");
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/lib.rs:109:5
[INFO] [stdout]     |
[INFO] [stdout] 106 |         switch_to_user(frame, mepc, satp);
[INFO] [stdout]     |         --------------------------------- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 109 |     panic!("Did not switch context");
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/lib.rs:33:18
[INFO] [stdout]    |
[INFO] [stdout] 33 |       ($fmt:expr) => ({
[INFO] [stdout]    |  _____________________^
[INFO] [stdout] 34 | |         print!(concat!($fmt, "\r\n"))
[INFO] [stdout] 35 | |     });
[INFO] [stdout]    | |_____^ unreachable statement
[INFO] [stdout]    | 
[INFO] [stdout]   ::: src/trap.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 |                   switch_to_user(frame, mepc, satp);
[INFO] [stdout]    |                   --------------------------------- any code following this expression is unreachable
[INFO] [stdout] 44 |                   println!("hit");
[INFO] [stdout]    |                   ---------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/trap.rs:80:17
[INFO] [stdout]    |
[INFO] [stdout] 76 | /                 panic!(
[INFO] [stdout] 77 | |                     "Illegal instruction CPU#{} -> 0x{:08x}: 0x{:08x}\n",
[INFO] [stdout] 78 | |                     hart, epc, tval
[INFO] [stdout] 79 | |                 );
[INFO] [stdout]    | |__________________- any code following this expression is unreachable
[INFO] [stdout] 80 |                   loop {}
[INFO] [stdout]    |                   ^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `playos`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/lib.rs:33:18
[INFO] [stdout]    |
[INFO] [stdout] 33 |       ($fmt:expr) => ({
[INFO] [stdout]    |  _____________________^
[INFO] [stdout] 34 | |         print!(concat!($fmt, "\r\n"))
[INFO] [stdout] 35 | |     });
[INFO] [stdout]    | |_____^ unreachable statement
[INFO] [stdout]    | 
[INFO] [stdout]   ::: src/trap.rs:43:17
[INFO] [stdout]    |
[INFO] [stdout] 43 |                   switch_to_user(frame, mepc, satp);
[INFO] [stdout]    |                   --------------------------------- any code following this expression is unreachable
[INFO] [stdout] 44 |                   println!("hit");
[INFO] [stdout]    |                   ---------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/trap.rs:80:17
[INFO] [stdout]    |
[INFO] [stdout] 76 | /                 panic!(
[INFO] [stdout] 77 | |                     "Illegal instruction CPU#{} -> 0x{:08x}: 0x{:08x}\n",
[INFO] [stdout] 78 | |                     hart, epc, tval
[INFO] [stdout] 79 | |                 );
[INFO] [stdout]    | |__________________- any code following this expression is unreachable
[INFO] [stdout] 80 |                   loop {}
[INFO] [stdout]    |                   ^^^^^^^ unreachable expression
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4d88651566d5769050f1e3b7a00f443dda4feb7fad3c5370d07bffec60759122", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d88651566d5769050f1e3b7a00f443dda4feb7fad3c5370d07bffec60759122", kill_on_drop: false }`
[INFO] [stdout] 4d88651566d5769050f1e3b7a00f443dda4feb7fad3c5370d07bffec60759122
