[INFO] cloning repository https://github.com/r-ushil/godel-register-machines
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/r-ushil/godel-register-machines" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fr-ushil%2Fgodel-register-machines", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fr-ushil%2Fgodel-register-machines'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 209118aac0a8d1f5035e11e4d32e813a72be2acf
[INFO] checking r-ushil/godel-register-machines against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fr-ushil%2Fgodel-register-machines" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/r-ushil/godel-register-machines on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/r-ushil/godel-register-machines
[INFO] finished tweaking git repo https://github.com/r-ushil/godel-register-machines
[INFO] tweaked toml for git repo https://github.com/r-ushil/godel-register-machines written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/r-ushil/godel-register-machines 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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7f7b02b737534edb196fb043b41f16ce55756830865d6d96d1034ac2d82faf52
[INFO] running `Command { std: "docker" "start" "-a" "7f7b02b737534edb196fb043b41f16ce55756830865d6d96d1034ac2d82faf52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f7b02b737534edb196fb043b41f16ce55756830865d6d96d1034ac2d82faf52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f7b02b737534edb196fb043b41f16ce55756830865d6d96d1034ac2d82faf52", kill_on_drop: false }`
[INFO] [stdout] 7f7b02b737534edb196fb043b41f16ce55756830865d6d96d1034ac2d82faf52
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bafcccbad4ad532cb9413420f42320e511164b9d60ce5cd6e7dfa08f2bcbdac3
[INFO] running `Command { std: "docker" "start" "-a" "bafcccbad4ad532cb9413420f42320e511164b9d60ce5cd6e7dfa08f2bcbdac3", kill_on_drop: false }`
[INFO] [stderr]     Checking godel-reg-machines v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `decode_double_owl`, `decode_list`, `decode_single_owl`
[INFO] [stdout]    --> src/decode.rs:156:25
[INFO] [stdout]     |
[INFO] [stdout] 156 |     use crate::decode::{decode_double_owl, decode_single_owl, decode_list};
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]   --> src/decode.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut y: u32 = 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: value assigned to `y` is never read
[INFO] [stdout]   --> src/decode.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let mut y: u32 = 0;
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calc_double_owl` is never used
[INFO] [stdout]  --> src/encode.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn calc_double_owl(x: u32, y: u32) -> u32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `calc_single_owl` is never used
[INFO] [stdout]   --> src/encode.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub fn calc_single_owl(x: u32, y: u32) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `encode_instr` is never used
[INFO] [stdout]   --> src/encode.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn encode_instr(instr: RegInstr) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reg_halt` is never used
[INFO] [stdout]   --> src/encode.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub fn reg_halt() -> u32{
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reg_subtract` is never used
[INFO] [stdout]   --> src/encode.rs:36:8
[INFO] [stdout]    |
[INFO] [stdout] 36 | pub fn reg_subtract(sub_instr: RegInstr) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `reg_add` is never used
[INFO] [stdout]   --> src/encode.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn reg_add(add_instr: RegInstr) -> u32 {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `list_encoding` is never used
[INFO] [stdout]   --> src/encode.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | pub fn list_encoding(nums: Vec<u32>) -> u32 {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode_double_owl` is never used
[INFO] [stdout]  --> src/decode.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn decode_double_owl(num: u32) -> (u32, u32) {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode_single_owl` is never used
[INFO] [stdout]   --> src/decode.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub fn decode_single_owl(num: u32) -> (u32, u32) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decode_list` is never used
[INFO] [stdout]   --> src/decode.rs:96:8
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub fn decode_list(num: u32) -> Vec<u32> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decodeInstr` is never used
[INFO] [stdout]    --> src/decode.rs:132:8
[INFO] [stdout]     |
[INFO] [stdout] 132 | pub fn decodeInstr(num: u32) -> RegInstr {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Add`, `Sub`, and `Halt` are never constructed
[INFO] [stdout]  --> src/instr.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum RegInstr {
[INFO] [stdout]   |          -------- variants in this enum
[INFO] [stdout] 6 |     Add(RegNum, Label),
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 7 |     Sub(RegNum, Label, Label),
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 8 |     Halt,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decodeInstr` should have a snake case name
[INFO] [stdout]    --> src/decode.rs:132:8
[INFO] [stdout]     |
[INFO] [stdout] 132 | pub fn decodeInstr(num: u32) -> RegInstr {
[INFO] [stdout]     |        ^^^^^^^^^^^ help: convert the identifier to snake case: `decode_instr`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `y` is never read
[INFO] [stdout]   --> src/decode.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut y: u32 = 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: value assigned to `y` is never read
[INFO] [stdout]   --> src/decode.rs:67:13
[INFO] [stdout]    |
[INFO] [stdout] 67 |     let mut y: u32 = 0;
[INFO] [stdout]    |             ^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decodeInstr` is never used
[INFO] [stdout]    --> src/decode.rs:132:8
[INFO] [stdout]     |
[INFO] [stdout] 132 | pub fn decodeInstr(num: u32) -> RegInstr {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `decodeInstr` should have a snake case name
[INFO] [stdout]    --> src/decode.rs:132:8
[INFO] [stdout]     |
[INFO] [stdout] 132 | pub fn decodeInstr(num: u32) -> RegInstr {
[INFO] [stdout]     |        ^^^^^^^^^^^ help: convert the identifier to snake case: `decode_instr`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "bafcccbad4ad532cb9413420f42320e511164b9d60ce5cd6e7dfa08f2bcbdac3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bafcccbad4ad532cb9413420f42320e511164b9d60ce5cd6e7dfa08f2bcbdac3", kill_on_drop: false }`
[INFO] [stdout] bafcccbad4ad532cb9413420f42320e511164b9d60ce5cd6e7dfa08f2bcbdac3