[INFO] cloning repository https://github.com/Inphi/rust-lc3-vm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Inphi/rust-lc3-vm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FInphi%2Frust-lc3-vm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FInphi%2Frust-lc3-vm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] cfcd5d5d288938fffa8a21c96f40d60460dfb7f0
[INFO] checking Inphi/rust-lc3-vm against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FInphi%2Frust-lc3-vm" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Inphi/rust-lc3-vm on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-3/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 `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9df4550c7b72dac75e069b119d17c5dd40db1c3796264aef3aa0b763aec7fda
[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" "d9df4550c7b72dac75e069b119d17c5dd40db1c3796264aef3aa0b763aec7fda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9df4550c7b72dac75e069b119d17c5dd40db1c3796264aef3aa0b763aec7fda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9df4550c7b72dac75e069b119d17c5dd40db1c3796264aef3aa0b763aec7fda", kill_on_drop: false }`
[INFO] [stdout] d9df4550c7b72dac75e069b119d17c5dd40db1c3796264aef3aa0b763aec7fda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f181d58d25335a336c22a0814eb979a03bbfa9220fa91d466831dee2653ffb2f
[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" "f181d58d25335a336c22a0814eb979a03bbfa9220fa91d466831dee2653ffb2f", kill_on_drop: false }`
[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] [stdout] warning: function is never used: `in_t`
[INFO] [stdout]   --> src/trap.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn in_t(vm: &VM) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DPSR`
[INFO] [stdout]   --> src/vm.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | const DPSR: u16 = 0xFE04; // memory-mapped display status register
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DPDR`
[INFO] [stdout]   --> src/vm.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | const DPDR: u16 = 0xFE06; // memory-mapped display data register
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MCCR`
[INFO] [stdout]   --> src/vm.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | const MCCR: u16 = 0xFFFE; // memory-mapped machine control register
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read`
[INFO] [stdout]    --> src/vm.rs:131:12
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn read(&self, r: Register) -> u16 {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rwrite`
[INFO] [stdout]    --> src/vm.rs:135:12
[INFO] [stdout]     |
[INFO] [stdout] 135 |     pub fn rwrite(&mut self, r: Register, val: u16) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `in_t`
[INFO] [stdout]   --> src/trap.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 48 | pub fn in_t(vm: &VM) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DPSR`
[INFO] [stdout]   --> src/vm.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | const DPSR: u16 = 0xFE04; // memory-mapped display status register
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `DPDR`
[INFO] [stdout]   --> src/vm.rs:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | const DPDR: u16 = 0xFE06; // memory-mapped display data register
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MCCR`
[INFO] [stdout]   --> src/vm.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | const MCCR: u16 = 0xFFFE; // memory-mapped machine control register
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `read`
[INFO] [stdout]    --> src/vm.rs:131:12
[INFO] [stdout]     |
[INFO] [stdout] 131 |     pub fn read(&self, r: Register) -> u16 {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `rwrite`
[INFO] [stdout]    --> src/vm.rs:135:12
[INFO] [stdout]     |
[INFO] [stdout] 135 |     pub fn rwrite(&mut self, r: Register, val: u16) {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.77s
[INFO] running `Command { std: "docker" "inspect" "f181d58d25335a336c22a0814eb979a03bbfa9220fa91d466831dee2653ffb2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f181d58d25335a336c22a0814eb979a03bbfa9220fa91d466831dee2653ffb2f", kill_on_drop: false }`
[INFO] [stdout] f181d58d25335a336c22a0814eb979a03bbfa9220fa91d466831dee2653ffb2f