[INFO] cloning repository https://github.com/nashpotato/cpu-sim
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nashpotato/cpu-sim" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnashpotato%2Fcpu-sim", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnashpotato%2Fcpu-sim'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2920d27d7152369f17296b4d712ddc6d6f6cba97
[INFO] checking nashpotato/cpu-sim against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnashpotato%2Fcpu-sim" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nashpotato/cpu-sim on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nashpotato/cpu-sim
[INFO] finished tweaking git repo https://github.com/nashpotato/cpu-sim
[INFO] tweaked toml for git repo https://github.com/nashpotato/cpu-sim written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/nashpotato/cpu-sim already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "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] ee0f0ae9e1f48fd48b9890d94a235a0c699bb029025b54338c3e9ff09234cb30
[INFO] running `Command { std: "docker" "start" "-a" "ee0f0ae9e1f48fd48b9890d94a235a0c699bb029025b54338c3e9ff09234cb30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ee0f0ae9e1f48fd48b9890d94a235a0c699bb029025b54338c3e9ff09234cb30", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee0f0ae9e1f48fd48b9890d94a235a0c699bb029025b54338c3e9ff09234cb30", kill_on_drop: false }`
[INFO] [stdout] ee0f0ae9e1f48fd48b9890d94a235a0c699bb029025b54338c3e9ff09234cb30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 292a605831d0e72b176a0020c27378d9a2874bb56fd69e4c98ad24236b62a9ca
[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" "292a605831d0e72b176a0020c27378d9a2874bb56fd69e4c98ad24236b62a9ca", kill_on_drop: false }`
[INFO] [stderr]     Checking text_io v0.1.8
[INFO] [stderr]     Checking cpu-sim v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]  --> src/cpu/util.rs:6:32
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn string_to_instr(op: &str)-> (fn(u32, u32) -> Instr){
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/cpu/util.rs:18:36
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn string_to_3arginstr(op: &str)-> (fn(u32, u32, u32) -> Instr){
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]  --> src/cpu/util.rs:6:32
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn string_to_instr(op: &str)-> (fn(u32, u32) -> Instr){
[INFO] [stdout]   |                                ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/cpu/util.rs:18:36
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn string_to_3arginstr(op: &str)-> (fn(u32, u32, u32) -> Instr){
[INFO] [stdout]    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `flags`
[INFO] [stdout]   --> src/cpu/cpu.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     flags: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `compare`
[INFO] [stdout]    --> src/cpu/cpu.rs:107:8
[INFO] [stdout]     |
[INFO] [stdout] 107 |     fn compare(&mut self) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `flags`
[INFO] [stdout]   --> src/cpu/cpu.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |     flags: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `compare`
[INFO] [stdout]    --> src/cpu/cpu.rs:107:8
[INFO] [stdout]     |
[INFO] [stdout] 107 |     fn compare(&mut self) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.30s
[INFO] running `Command { std: "docker" "inspect" "292a605831d0e72b176a0020c27378d9a2874bb56fd69e4c98ad24236b62a9ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "292a605831d0e72b176a0020c27378d9a2874bb56fd69e4c98ad24236b62a9ca", kill_on_drop: false }`
[INFO] [stdout] 292a605831d0e72b176a0020c27378d9a2874bb56fd69e4c98ad24236b62a9ca