[INFO] cloning repository https://github.com/willerf/mips-emulator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/willerf/mips-emulator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillerf%2Fmips-emulator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillerf%2Fmips-emulator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 95898d670ac083963bef9f56279ad4681ac1e720
[INFO] checking willerf/mips-emulator against try#fafe42c59556a4233f03dd0d900b575a9afeece8 for pr-143764
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillerf%2Fmips-emulator" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/willerf/mips-emulator
[INFO] finished tweaking git repo https://github.com/willerf/mips-emulator
[INFO] tweaked toml for git repo https://github.com/willerf/mips-emulator written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/willerf/mips-emulator on toolchain fafe42c59556a4233f03dd0d900b575a9afeece8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/willerf/mips-emulator 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" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae56fbefe9cc181a49df500c5364013a9078e1576ce6bfc0bf1c24417d3d955f
[INFO] running `Command { std: "docker" "start" "-a" "ae56fbefe9cc181a49df500c5364013a9078e1576ce6bfc0bf1c24417d3d955f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae56fbefe9cc181a49df500c5364013a9078e1576ce6bfc0bf1c24417d3d955f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae56fbefe9cc181a49df500c5364013a9078e1576ce6bfc0bf1c24417d3d955f", kill_on_drop: false }`
[INFO] [stdout] ae56fbefe9cc181a49df500c5364013a9078e1576ce6bfc0bf1c24417d3d955f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+fafe42c59556a4233f03dd0d900b575a9afeece8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97ac3801ee44e105e8eaee3ce6ff0fe19075284b4dbf9652421af21ac570de95
[INFO] running `Command { std: "docker" "start" "-a" "97ac3801ee44e105e8eaee3ce6ff0fe19075284b4dbf9652421af21ac570de95", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling libc v0.2.135
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking env_logger v0.9.1
[INFO] [stderr]     Checking rust-cs241e v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `temp_sp` is never read
[INFO] [stdout]    --> src/mips_cpu.rs:190:13
[INFO] [stdout]     |
[INFO] [stdout] 190 |     let mut temp_sp = 0;
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `heap_addr`
[INFO] [stdout]   --> src/main.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let heap_addr = mem.size();
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_heap_addr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mips_arr_example` is never used
[INFO] [stdout]   --> src/main.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn mips_arr_example() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `temp_sp` is never read
[INFO] [stdout]    --> src/mips_cpu.rs:190:13
[INFO] [stdout]     |
[INFO] [stdout] 190 |     let mut temp_sp = 0;
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `heap_addr`
[INFO] [stdout]   --> src/main.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let heap_addr = mem.size();
[INFO] [stdout]    |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_heap_addr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `mips_arr_example` is never used
[INFO] [stdout]   --> src/main.rs:60:4
[INFO] [stdout]    |
[INFO] [stdout] 60 | fn mips_arr_example() {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.76s
[INFO] running `Command { std: "docker" "inspect" "97ac3801ee44e105e8eaee3ce6ff0fe19075284b4dbf9652421af21ac570de95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97ac3801ee44e105e8eaee3ce6ff0fe19075284b4dbf9652421af21ac570de95", kill_on_drop: false }`
[INFO] [stdout] 97ac3801ee44e105e8eaee3ce6ff0fe19075284b4dbf9652421af21ac570de95