[INFO] cloning repository https://github.com/arch-sim/alpha_sim
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arch-sim/alpha_sim" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farch-sim%2Falpha_sim", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farch-sim%2Falpha_sim'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 71f47b4d32829044b460456e07263de63c0183ef
[INFO] checking arch-sim/alpha_sim against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farch-sim%2Falpha_sim" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/arch-sim/alpha_sim on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/arch-sim/alpha_sim
[INFO] finished tweaking git repo https://github.com/arch-sim/alpha_sim
[INFO] tweaked toml for git repo https://github.com/arch-sim/alpha_sim written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/arch-sim/alpha_sim already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 88fe62b310780ffa28536690c38f16a8a581fb8b25371b0278208d85d9828b31
[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" "88fe62b310780ffa28536690c38f16a8a581fb8b25371b0278208d85d9828b31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88fe62b310780ffa28536690c38f16a8a581fb8b25371b0278208d85d9828b31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88fe62b310780ffa28536690c38f16a8a581fb8b25371b0278208d85d9828b31", kill_on_drop: false }`
[INFO] [stdout] 88fe62b310780ffa28536690c38f16a8a581fb8b25371b0278208d85d9828b31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b675a9b0bf1e7e0c20dbf45f4a9b41570c3af499502c1f9c471cec622f61e59e
[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" "b675a9b0bf1e7e0c20dbf45f4a9b41570c3af499502c1f9c471cec622f61e59e", kill_on_drop: false }`
[INFO] [stderr]     Checking alpha_sim v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type `data_t` should have an upper camel case name
[INFO] [stdout]   --> src/define.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub type data_t = u64;
[INFO] [stdout]    |          ^^^^^^ help: convert the identifier to upper camel case: `DataT`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prog`
[INFO] [stdout]   --> src/sim_chip.rs:20:16
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn new(prog: &str, opt: &[String]) -> SimChip {
[INFO] [stdout]    |                ^^^^ help: if this is intentional, prefix it with an underscore: `_prog`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `opt`
[INFO] [stdout]   --> src/sim_chip.rs:20:28
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn new(prog: &str, opt: &[String]) -> SimChip {
[INFO] [stdout]    |                            ^^^ help: if this is intentional, prefix it with an underscore: `_opt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `IMSK`
[INFO] [stdout]   --> src/sim_chip.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | const IMSK: i64 = 0x0ffff; /* mask of inst_buf */
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `data_t` should have an upper camel case name
[INFO] [stdout]   --> src/define.rs:18:10
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub type data_t = u64;
[INFO] [stdout]    |          ^^^^^^ help: convert the identifier to upper camel case: `DataT`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `prog`
[INFO] [stdout]   --> src/sim_chip.rs:20:16
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn new(prog: &str, opt: &[String]) -> SimChip {
[INFO] [stdout]    |                ^^^^ help: if this is intentional, prefix it with an underscore: `_prog`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `opt`
[INFO] [stdout]   --> src/sim_chip.rs:20:28
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn new(prog: &str, opt: &[String]) -> SimChip {
[INFO] [stdout]    |                            ^^^ help: if this is intentional, prefix it with an underscore: `_opt`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `IMSK`
[INFO] [stdout]   --> src/sim_chip.rs:15:1
[INFO] [stdout]    |
[INFO] [stdout] 15 | const IMSK: i64 = 0x0ffff; /* mask of inst_buf */
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "b675a9b0bf1e7e0c20dbf45f4a9b41570c3af499502c1f9c471cec622f61e59e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b675a9b0bf1e7e0c20dbf45f4a9b41570c3af499502c1f9c471cec622f61e59e", kill_on_drop: false }`
[INFO] [stdout] b675a9b0bf1e7e0c20dbf45f4a9b41570c3af499502c1f9c471cec622f61e59e