[INFO] cloning repository https://github.com/TQCasey/rcasey
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/TQCasey/rcasey" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTQCasey%2Frcasey", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTQCasey%2Frcasey'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 331b309770ef5fad20de6db73bc5b4b6c28a52ea
[INFO] checking TQCasey/rcasey/331b309770ef5fad20de6db73bc5b4b6c28a52ea against try#31561a63598a0f21fc74c024747ef1310fdd2eb2 for pr-133536
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FTQCasey%2Frcasey" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/TQCasey/rcasey on toolchain 31561a63598a0f21fc74c024747ef1310fdd2eb2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-4-tc2/source/.cargo/config
[INFO] started tweaking git repo https://github.com/TQCasey/rcasey
[INFO] finished tweaking git repo https://github.com/TQCasey/rcasey
[INFO] tweaked toml for git repo https://github.com/TQCasey/rcasey written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/TQCasey/rcasey 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" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "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 bootloader v0.9.20
[INFO] [stderr]   Downloaded x86_64 v0.14.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 21403583308f0bca6c70e7c3f0781802ee7e05a34cde78d447d4ac7ebaf3ed54
[INFO] running `Command { std: "docker" "start" "-a" "21403583308f0bca6c70e7c3f0781802ee7e05a34cde78d447d4ac7ebaf3ed54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21403583308f0bca6c70e7c3f0781802ee7e05a34cde78d447d4ac7ebaf3ed54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21403583308f0bca6c70e7c3f0781802ee7e05a34cde78d447d4ac7ebaf3ed54", kill_on_drop: false }`
[INFO] [stdout] 21403583308f0bca6c70e7c3f0781802ee7e05a34cde78d447d4ac7ebaf3ed54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b1b4630150c1731b567c2fd173c2084ae79a8ce7710fbe397c2f20c59642c6a6
[INFO] running `Command { std: "docker" "start" "-a" "b1b4630150c1731b567c2fd173c2084ae79a8ce7710fbe397c2f20c59642c6a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling x86_64 v0.14.8
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling bootloader v0.9.20
[INFO] [stderr]     Checking conquer-util v0.3.0
[INFO] [stderr]     Checking volatile v0.4.4
[INFO] [stderr]     Checking font8x8 v0.3.1
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]     Checking conquer-once v0.3.2
[INFO] [stderr]     Checking spinning_top v0.2.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking vga v0.2.7 (/opt/rustwide/workdir/vga)
[INFO] [stdout] warning: associated function `cast` is never used
[INFO] [stdout]   --> vga/src/drawing/mod.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub(crate) trait SignedNum: Signed + Ord + Copy + NumCast + NumAssignOps {
[INFO] [stdout]    |                  --------- associated function in this trait
[INFO] [stdout] 15 |     fn cast<T: NumCast>(value: T) -> Self {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `st00_read`, `st01_read_cga`, `st01_read_mda`, `fcr_read`, `fcr_write_cga`, and `fcr_write_mda` are never read
[INFO] [stdout]   --> vga/src/registers/general.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub struct GeneralRegisters {
[INFO] [stdout]    |            ---------------- fields in this struct
[INFO] [stdout] 10 |     st00_read: PortReadOnly<u8>,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 11 |     st01_read_cga: PortReadOnly<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 12 |     st01_read_mda: PortReadOnly<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 13 |     fcr_read: PortReadOnly<u8>,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 14 |     fcr_write_cga: PortWriteOnly<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 15 |     fcr_write_mda: PortWriteOnly<u8>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `GeneralRegisters` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rcaseyos v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `llvm_asm`
[INFO] [stdout]  --> src/main.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(llvm_asm)]
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `vga_buffer`
[INFO] [stdout]   --> src/main.rs:23:9
[INFO] [stdout]    |
[INFO] [stdout] 23 |     let vga_buffer = 0xb8000 as *mut u8;
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_vga_buffer`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]   --> src/main.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | / fn panic(_info: &PanicInfo) -> ! {
[INFO] [stdout] 16 | |     loop {}
[INFO] [stdout] 17 | | }
[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/31561a63598a0f21fc74c024747ef1310fdd2eb2/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-cb5ec2ef594bb30c.rlib
[INFO] [stdout]    = note: second definition in the local crate (`rcaseyos`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rcaseyos` (bin "rcaseyos" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rcaseyos` (bin "rcaseyos") due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "b1b4630150c1731b567c2fd173c2084ae79a8ce7710fbe397c2f20c59642c6a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b1b4630150c1731b567c2fd173c2084ae79a8ce7710fbe397c2f20c59642c6a6", kill_on_drop: false }`
[INFO] [stdout] b1b4630150c1731b567c2fd173c2084ae79a8ce7710fbe397c2f20c59642c6a6
