[INFO] cloning repository https://github.com/vernonrj/MIPSical
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/vernonrj/MIPSical" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvernonrj%2FMIPSical"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvernonrj%2FMIPSical'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7838ffd302ac7db5ed8eb21f0bb74b82f1ae3e31
[INFO] checking vernonrj/MIPSical against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvernonrj%2FMIPSical" "/workspace/builds/worker-9/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/vernonrj/MIPSical on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/vernonrj/MIPSical
[INFO] finished tweaking git repo https://github.com/vernonrj/MIPSical
[INFO] tweaked toml for git repo https://github.com/vernonrj/MIPSical written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/vernonrj/MIPSical already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-9/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8767638089f680b0d6708fa15c65a22d92ea49faa9cc734e3f451e56f7b4ad57
[INFO] running `"docker" "start" "-a" "8767638089f680b0d6708fa15c65a22d92ea49faa9cc734e3f451e56f7b4ad57"`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking mips v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decoder.rs:22:22
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub execute: Box<Fn(&Vec<u32>) -> ExecResult<u32>>,
[INFO] [stderr]    |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<u32>) -> ExecResult<u32>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/decoder.rs:23:27
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub branch_taken: Box<Fn(&Vec<u32>) -> bool>,
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Vec<u32>) -> bool`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `error::ExecResult`
[INFO] [stderr]  --> src/instruction/branch.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use error::ExecResult;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:23:16
[INFO] [stderr]    |
[INFO] [stderr] 23 |     error: Box<error::Error + Send + Sync>,
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:28:27
[INFO] [stderr]    |
[INFO] [stderr] 28 |         where E: Into<Box<error::Error + Send + Sync>>
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Normal`
[INFO] [stderr]  --> src/decoded.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Normal(u8),
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Special`
[INFO] [stderr]  --> src/decoded.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Special(u8),
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `RegImm`
[INFO] [stderr]  --> src/decoded.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     RegImm(u8),
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Register`
[INFO] [stderr]   --> src/decoded.rs:21:12
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub struct Register(pub u8);
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `RS`
[INFO] [stderr]   --> src/decoder.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     RS,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `RT`
[INFO] [stderr]   --> src/decoder.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     RT,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `RD`
[INFO] [stderr]   --> src/decoder.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     RD,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SA`
[INFO] [stderr]   --> src/decoder.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     SA,
[INFO] [stderr]    |     ^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Immediate`
[INFO] [stderr]   --> src/decoder.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Immediate,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Decoder`
[INFO] [stderr]   --> src/decoder.rs:44:12
[INFO] [stderr]    |
[INFO] [stderr] 44 | pub struct Decoder {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/decoder.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `decode`
[INFO] [stderr]   --> src/decoder.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn decode(&self, command: Fetched) -> Option<&Instruction> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `keys`
[INFO] [stderr]   --> src/decoder.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 |     pub fn keys(&self) -> Vec<Opcode> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Fetched`
[INFO] [stderr]   --> src/decoder.rs:73:12
[INFO] [stderr]    |
[INFO] [stderr] 73 | pub struct Fetched(pub u32);
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `extract_31_26`
[INFO] [stderr]   --> src/decoder.rs:75:8
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub fn extract_31_26(bitfield: u32) -> u8 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `extract_25_21`
[INFO] [stderr]   --> src/decoder.rs:78:8
[INFO] [stderr]    |
[INFO] [stderr] 78 | pub fn extract_25_21(bitfield: u32) -> u8 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `extract_20_16`
[INFO] [stderr]   --> src/decoder.rs:81:8
[INFO] [stderr]    |
[INFO] [stderr] 81 | pub fn extract_20_16(bitfield: u32) -> u8 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `extract_15_11`
[INFO] [stderr]   --> src/decoder.rs:84:8
[INFO] [stderr]    |
[INFO] [stderr] 84 | pub fn extract_15_11(bitfield: u32) -> u8 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `extract_15_0`
[INFO] [stderr]   --> src/decoder.rs:87:8
[INFO] [stderr]    |
[INFO] [stderr] 87 | pub fn extract_15_0(bitfield: u32) -> u16 {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `extract_10_6`
[INFO] [stderr]   --> src/decoder.rs:90:8
[INFO] [stderr]    |
[INFO] [stderr] 90 | pub fn extract_10_6(bitfield: u32) -> u8 {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `extract_5_0`
[INFO] [stderr]   --> src/decoder.rs:93:8
[INFO] [stderr]    |
[INFO] [stderr] 93 | pub fn extract_5_0(bitfield: u32) -> u8 {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `extract_25_0`
[INFO] [stderr]   --> src/decoder.rs:96:8
[INFO] [stderr]    |
[INFO] [stderr] 96 | pub fn extract_25_0(bitfield: u32) -> u32 {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `register`
[INFO] [stderr]  --> src/instruction/add.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn register(m: &mut HashMap<Opcode, Instruction>) {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `register`
[INFO] [stderr]  --> src/instruction/and.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn register(m: &mut HashMap<Opcode, Instruction>) {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `register`
[INFO] [stderr]  --> src/instruction/branch.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn register(m: &mut HashMap<Opcode, Instruction>) {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `register`
[INFO] [stderr]  --> src/instruction/shift.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn register(m: &mut HashMap<Opcode, Instruction>) {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Success`
[INFO] [stderr]  --> src/error.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Success(T),
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Exception`
[INFO] [stderr]  --> src/error.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Exception(ExecError),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unwrap`
[INFO] [stderr]   --> src/error.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn unwrap(self) -> T {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/error.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 | /     pub fn new<E>(kind: ErrorKind, error: E) -> Self
[INFO] [stderr] 28 | |         where E: Into<Box<error::Error + Send + Sync>>
[INFO] [stderr] 29 | |     {
[INFO] [stderr] 30 | |         ExecError {
[INFO] [stderr] ...  |
[INFO] [stderr] 33 | |         }
[INFO] [stderr] 34 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Overflow`
[INFO] [stderr]   --> src/error.rs:55:5
[INFO] [stderr]    |
[INFO] [stderr] 55 |     Overflow,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 36 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]     Checking quickcheck v0.2.27
[INFO] [stderr] error[E0606]: casting `f32` as `i32` is invalid
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/quickcheck-0.2.27/src/arbitrary.rs:621:48
[INFO] [stderr]     |
[INFO] [stderr] 621 |         let it = shrinker::SignedShrinker::new(*self as i32);
[INFO] [stderr]     |                                                ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0606]: casting `f64` as `i64` is invalid
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/quickcheck-0.2.27/src/arbitrary.rs:632:48
[INFO] [stderr]     |
[INFO] [stderr] 632 |         let it = shrinker::SignedShrinker::new(*self as i64);
[INFO] [stderr]     |                                                ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0606`.
[INFO] [stderr] error: could not compile `quickcheck`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "8767638089f680b0d6708fa15c65a22d92ea49faa9cc734e3f451e56f7b4ad57"`
[INFO] running `"docker" "rm" "-f" "8767638089f680b0d6708fa15c65a22d92ea49faa9cc734e3f451e56f7b4ad57"`
[INFO] [stdout] 8767638089f680b0d6708fa15c65a22d92ea49faa9cc734e3f451e56f7b4ad57