[INFO] updating cached repository https://github.com/Inphi/rust-lc3-vm
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cfcd5d5d288938fffa8a21c96f40d60460dfb7f0
[INFO] checking Inphi/rust-lc3-vm against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FInphi%2Frust-lc3-vm" "/workspace/builds/worker-1/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Inphi/rust-lc3-vm 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/Inphi/rust-lc3-vm
[INFO] finished tweaking git repo https://github.com/Inphi/rust-lc3-vm
[INFO] tweaked toml for git repo https://github.com/Inphi/rust-lc3-vm written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/Inphi/rust-lc3-vm already has a lockfile, it will not be regenerated
[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-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] d876327ee4c2f0a3f33a01c607ed66fd1dd209612389490f80c9901ec89ed6b7
[INFO] running `"docker" "start" "-a" "d876327ee4c2f0a3f33a01c607ed66fd1dd209612389490f80c9901ec89ed6b7"`
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking lc3-vm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: function is never used: `in_t`
[INFO] [stderr]   --> src/trap.rs:48:8
[INFO] [stderr]    |
[INFO] [stderr] 48 | pub fn in_t(vm: &VM) {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `DPSR`
[INFO] [stderr]   --> src/vm.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | const DPSR: u16 = 0xFE04; // memory-mapped display status register
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `DPDR`
[INFO] [stderr]   --> src/vm.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | const DPDR: u16 = 0xFE06; // memory-mapped display data register
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MCCR`
[INFO] [stderr]   --> src/vm.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | const MCCR: u16 = 0xFFFE; // memory-mapped machine control register
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read`
[INFO] [stderr]    --> src/vm.rs:131:5
[INFO] [stderr]     |
[INFO] [stderr] 131 |     pub fn read(&self, r: Register) -> u16 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rwrite`
[INFO] [stderr]    --> src/vm.rs:135:5
[INFO] [stderr]     |
[INFO] [stderr] 135 |     pub fn rwrite(&mut self, r: Register, val: u16) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `in_t`
[INFO] [stderr]   --> src/trap.rs:48:8
[INFO] [stderr]    |
[INFO] [stderr] 48 | pub fn in_t(vm: &VM) {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `DPSR`
[INFO] [stderr]   --> src/vm.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | const DPSR: u16 = 0xFE04; // memory-mapped display status register
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `DPDR`
[INFO] [stderr]   --> src/vm.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | const DPDR: u16 = 0xFE06; // memory-mapped display data register
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MCCR`
[INFO] [stderr]   --> src/vm.rs:19:1
[INFO] [stderr]    |
[INFO] [stderr] 19 | const MCCR: u16 = 0xFFFE; // memory-mapped machine control register
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read`
[INFO] [stderr]    --> src/vm.rs:131:5
[INFO] [stderr]     |
[INFO] [stderr] 131 |     pub fn read(&self, r: Register) -> u16 {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `rwrite`
[INFO] [stderr]    --> src/vm.rs:135:5
[INFO] [stderr]     |
[INFO] [stderr] 135 |     pub fn rwrite(&mut self, r: Register, val: u16) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.21s
[INFO] running `"docker" "inspect" "d876327ee4c2f0a3f33a01c607ed66fd1dd209612389490f80c9901ec89ed6b7"`
[INFO] running `"docker" "rm" "-f" "d876327ee4c2f0a3f33a01c607ed66fd1dd209612389490f80c9901ec89ed6b7"`
[INFO] [stdout] d876327ee4c2f0a3f33a01c607ed66fd1dd209612389490f80c9901ec89ed6b7