[INFO] cloning repository https://github.com/jgvt5/cpu_emu
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jgvt5/cpu_emu" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgvt5%2Fcpu_emu", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgvt5%2Fcpu_emu'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a81066e68d1554bc10272e179d2a0c5329e2ddf9
[INFO] checking jgvt5/cpu_emu against master#dfd7b8d03fb93d0e03147d28b3be6d93260fa94d for pr-87050
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgvt5%2Fcpu_emu" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jgvt5/cpu_emu on toolchain dfd7b8d03fb93d0e03147d28b3be6d93260fa94d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jgvt5/cpu_emu
[INFO] finished tweaking git repo https://github.com/jgvt5/cpu_emu
[INFO] tweaked toml for git repo https://github.com/jgvt5/cpu_emu written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/jgvt5/cpu_emu already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c04bc7702230cb5b71958a9db89c04cb130922088ff0d86f49fda4782d413e26
[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" "c04bc7702230cb5b71958a9db89c04cb130922088ff0d86f49fda4782d413e26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c04bc7702230cb5b71958a9db89c04cb130922088ff0d86f49fda4782d413e26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c04bc7702230cb5b71958a9db89c04cb130922088ff0d86f49fda4782d413e26", kill_on_drop: false }`
[INFO] [stdout] c04bc7702230cb5b71958a9db89c04cb130922088ff0d86f49fda4782d413e26
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+dfd7b8d03fb93d0e03147d28b3be6d93260fa94d" "check" "--frozen" "--all" "--all-targets" "--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] 3b4504fe297c0d29b925e8e9ce020cec1eb3878c5a4f0879d054e657341e9fd0
[INFO] running `Command { std: "docker" "start" "-a" "3b4504fe297c0d29b925e8e9ce020cec1eb3878c5a4f0879d054e657341e9fd0", kill_on_drop: false }`
[INFO] [stderr]     Checking simulator v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant is never used: `REG4`
[INFO] [stdout]   --> src/regs.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub const REG4:u16 = 4;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `REG5`
[INFO] [stdout]   --> src/regs.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub const REG5:u16 = 5;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `REG6`
[INFO] [stdout]   --> src/regs.rs:26:1
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub const REG6:u16 = 6;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `REG7`
[INFO] [stdout]   --> src/regs.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub const REG7:u16 = 7;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mov`
[INFO] [stdout]   --> src/regs.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn mov(ra: u16, rb: u16) -> u16 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sub`
[INFO] [stdout]   --> src/regs.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn sub(ra: u16, rb: u16) -> u16 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `and`
[INFO] [stdout]   --> src/regs.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn and(ra: u16, rb: u16) -> u16 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `or`
[INFO] [stdout]   --> src/regs.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn or(ra: u16, rb: u16) -> u16 {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sl`
[INFO] [stdout]   --> src/regs.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn sl(ra: u16) -> u16 {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sr`
[INFO] [stdout]   --> src/regs.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn sr(ra: u16) -> u16 {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sra`
[INFO] [stdout]   --> src/regs.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn sra(ra: u16) -> u16 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ld`
[INFO] [stdout]   --> src/regs.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | pub fn ld(ra: u16, addr: u16) -> u16 {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `REG4`
[INFO] [stdout]   --> src/regs.rs:24:1
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub const REG4:u16 = 4;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `REG5`
[INFO] [stdout]   --> src/regs.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub const REG5:u16 = 5;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `REG6`
[INFO] [stdout]   --> src/regs.rs:26:1
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub const REG6:u16 = 6;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `REG7`
[INFO] [stdout]   --> src/regs.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | pub const REG7:u16 = 7;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `mov`
[INFO] [stdout]   --> src/regs.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn mov(ra: u16, rb: u16) -> u16 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sub`
[INFO] [stdout]   --> src/regs.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn sub(ra: u16, rb: u16) -> u16 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `and`
[INFO] [stdout]   --> src/regs.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn and(ra: u16, rb: u16) -> u16 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `or`
[INFO] [stdout]   --> src/regs.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub fn or(ra: u16, rb: u16) -> u16 {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sl`
[INFO] [stdout]   --> src/regs.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 | pub fn sl(ra: u16) -> u16 {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sr`
[INFO] [stdout]   --> src/regs.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn sr(ra: u16) -> u16 {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sra`
[INFO] [stdout]   --> src/regs.rs:51:8
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn sra(ra: u16) -> u16 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `ld`
[INFO] [stdout]   --> src/regs.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 69 | pub fn ld(ra: u16, addr: u16) -> u16 {
[INFO] [stdout]    |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
[INFO] running `Command { std: "docker" "inspect" "3b4504fe297c0d29b925e8e9ce020cec1eb3878c5a4f0879d054e657341e9fd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b4504fe297c0d29b925e8e9ce020cec1eb3878c5a4f0879d054e657341e9fd0", kill_on_drop: false }`
[INFO] [stdout] 3b4504fe297c0d29b925e8e9ce020cec1eb3878c5a4f0879d054e657341e9fd0