[INFO] cloning repository https://github.com/robot-rover/cpusim
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/robot-rover/cpusim" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobot-rover%2Fcpusim", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobot-rover%2Fcpusim'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 91d70cb34415086d0e4cd820c936c42813679dc9
[INFO] checking robot-rover/cpusim against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frobot-rover%2Fcpusim" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/robot-rover/cpusim
[INFO] finished tweaking git repo https://github.com/robot-rover/cpusim
[INFO] tweaked toml for git repo https://github.com/robot-rover/cpusim written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/robot-rover/cpusim on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/robot-rover/cpusim 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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] 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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bf6d693285f7efdf7431269bdd2d6e37304200006f37e786e1425dd39c33a826
[INFO] running `Command { std: "docker" "start" "-a" "bf6d693285f7efdf7431269bdd2d6e37304200006f37e786e1425dd39c33a826", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bf6d693285f7efdf7431269bdd2d6e37304200006f37e786e1425dd39c33a826", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf6d693285f7efdf7431269bdd2d6e37304200006f37e786e1425dd39c33a826", kill_on_drop: false }`
[INFO] [stdout] bf6d693285f7efdf7431269bdd2d6e37304200006f37e786e1425dd39c33a826
[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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 55a4fc842b6403b827913b06af0dfb38f70a165d569f895d5a1e158832ad556c
[INFO] running `Command { std: "docker" "start" "-a" "55a4fc842b6403b827913b06af0dfb38f70a165d569f895d5a1e158832ad556c", kill_on_drop: false }`
[INFO] [stderr]     Checking bitflags v2.8.0
[INFO] [stderr]     Checking managed v0.8.0
[INFO] [stderr]     Checking log v0.4.25
[INFO] [stderr]     Checking elf v0.7.4
[INFO] [stderr]    Compiling cc v1.2.10
[INFO] [stderr]     Checking gdbstub v0.7.3
[INFO] [stderr]    Compiling cmake v0.1.52
[INFO] [stderr]     Checking gdbstub_arch v0.3.1
[INFO] [stderr]    Compiling unicorn-engine v2.1.1
[INFO] [stderr]     Checking cpusim v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/gdb.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]  --> src/gdb.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SECOND_SCALE`
[INFO] [stdout]   --> src/main.rs:14:61
[INFO] [stdout]    |
[INFO] [stdout] 14 | use unicorn_engine::unicorn_const::{Arch, Mode, Permission, SECOND_SCALE};
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SECOND_SCALE`
[INFO] [stdout]   --> src/main.rs:14:61
[INFO] [stdout]    |
[INFO] [stdout] 14 | use unicorn_engine::unicorn_const::{Arch, Mode, Permission, SECOND_SCALE};
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]   --> src/gdb.rs:92:64
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let handle = self.uni.add_code_hook(addr, addr , |uni, addr, instr_size| uni.emu_stop().unwrap()).unwrap();
[INFO] [stdout]    |                                                                ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `addr`
[INFO] [stdout]   --> src/gdb.rs:92:64
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let handle = self.uni.add_code_hook(addr, addr , |uni, addr, instr_size| uni.emu_stop().unwrap()).unwrap();
[INFO] [stdout]    |                                                                ^^^^ help: if this is intentional, prefix it with an underscore: `_addr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `instr_size`
[INFO] [stdout]   --> src/gdb.rs:92:70
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let handle = self.uni.add_code_hook(addr, addr , |uni, addr, instr_size| uni.emu_stop().unwrap()).unwrap();
[INFO] [stdout]    |                                                                      ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_instr_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `instr_size`
[INFO] [stdout]   --> src/gdb.rs:92:70
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let handle = self.uni.add_code_hook(addr, addr , |uni, addr, instr_size| uni.emu_stop().unwrap()).unwrap();
[INFO] [stdout]    |                                                                      ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_instr_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]    --> src/gdb.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |         target: &mut Self::Target,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]    --> src/gdb.rs:146:9
[INFO] [stdout]     |
[INFO] [stdout] 146 |         target: &mut Self::Target,
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]    --> src/gdb.rs:131:22
[INFO] [stdout]     |
[INFO] [stdout] 131 |             let pc = target.uni.reg_read(RegisterARM::PC).unwrap().try_into().unwrap();
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u64, Infallible>
[INFO] [stdout]    --> src/gdb.rs:131:22
[INFO] [stdout]     |
[INFO] [stdout] 131 |             let pc = target.uni.reg_read(RegisterARM::PC).unwrap().try_into().unwrap();
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cpusim` (bin "cpusim") due to 1 previous error; 5 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `cpusim` (bin "cpusim" test) due to 1 previous error; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "55a4fc842b6403b827913b06af0dfb38f70a165d569f895d5a1e158832ad556c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55a4fc842b6403b827913b06af0dfb38f70a165d569f895d5a1e158832ad556c", kill_on_drop: false }`
[INFO] [stdout] 55a4fc842b6403b827913b06af0dfb38f70a165d569f895d5a1e158832ad556c
