[INFO] updating cached repository https://github.com/mdm/ronald
[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] [stderr] From https://github.com/mdm/ronald
[INFO] [stderr]    61cae0b..9257926  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 92579269bca20c3a1ba5c2133f2c273ac96202c5
[INFO] checking mdm/ronald against try#98d5ea1855f1028095b37c493ba31093c8519d68 for pr-69548
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdm%2Fronald" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mdm/ronald on toolchain 98d5ea1855f1028095b37c493ba31093c8519d68
[INFO] running `"/workspace/cargo-home/bin/cargo" "+98d5ea1855f1028095b37c493ba31093c8519d68" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/mdm/ronald
[INFO] finished tweaking git repo https://github.com/mdm/ronald
[INFO] tweaked toml for git repo https://github.com/mdm/ronald written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/mdm/ronald already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+98d5ea1855f1028095b37c493ba31093c8519d68" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "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" "+98d5ea1855f1028095b37c493ba31093c8519d68" "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] c9a682813eac7eccf07ef137486d948e515accba5f1e3576597f38770dae69ec
[INFO] running `"docker" "start" "-a" "c9a682813eac7eccf07ef137486d948e515accba5f1e3576597f38770dae69ec"`
[INFO] [stderr]     Checking ronald v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `initial_pc`
[INFO] [stderr]    --> src/cpu.rs:120:27
[INFO] [stderr]     |
[INFO] [stderr] 120 |     pub fn new(memory: M, initial_pc: u16) -> CPU<M> {
[INFO] [stderr]     |                           ^^^^^^^^^^ help: consider prefixing with an underscore: `_initial_pc`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `next_address`
[INFO] [stderr]    --> src/cpu.rs:134:27
[INFO] [stderr]     |
[INFO] [stderr] 134 |         let (instruction, next_address) = self.decoder.decode_at(
[INFO] [stderr]     |                           ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_next_address`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `initial_pc`
[INFO] [stderr]    --> src/cpu.rs:120:27
[INFO] [stderr]     |
[INFO] [stderr] 120 |     pub fn new(memory: M, initial_pc: u16) -> CPU<M> {
[INFO] [stderr]     |                           ^^^^^^^^^^ help: consider prefixing with an underscore: `_initial_pc`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `next_address`
[INFO] [stderr]    --> src/cpu.rs:134:27
[INFO] [stderr]     |
[INFO] [stderr] 134 |         let (instruction, next_address) = self.decoder.decode_at(
[INFO] [stderr]     |                           ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_next_address`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_to_file`
[INFO] [stderr]   --> src/memory.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub fn write_to_file(&self, file: &mut File) -> io::Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/memory.rs:93:5
[INFO] [stderr]    |
[INFO] [stderr] 93 |     pub fn new() -> Memory {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_to_file`
[INFO] [stderr]   --> src/memory.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub fn write_to_file(&self, file: &mut File) -> io::Result<()> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `timing`
[INFO] [stderr]    --> src/instruction.rs:207:5
[INFO] [stderr]     |
[INFO] [stderr] 207 |     fn timing(&self) -> usize {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/memory.rs:93:5
[INFO] [stderr]    |
[INFO] [stderr] 93 |     pub fn new() -> Memory {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F`
[INFO] [stderr]  --> src/cpu.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     F,
[INFO] [stderr]   |     ^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `timing`
[INFO] [stderr]    --> src/instruction.rs:207:5
[INFO] [stderr]     |
[INFO] [stderr] 207 |     fn timing(&self) -> usize {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read_byte`
[INFO] [stderr]   --> src/cpu.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn read_byte(&self, register: Register) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_byte`
[INFO] [stderr]   --> src/cpu.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     fn write_byte(&mut self, register: Register, value: u8) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `F`
[INFO] [stderr]  --> src/cpu.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     F,
[INFO] [stderr]   |     ^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_word`
[INFO] [stderr]   --> src/cpu.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     fn write_word(&mut self, register: Register, value: u16) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read_byte`
[INFO] [stderr]   --> src/cpu.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn read_byte(&self, register: Register) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_byte`
[INFO] [stderr]   --> src/cpu.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     fn write_byte(&mut self, register: Register, value: u8) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write_word`
[INFO] [stderr]   --> src/cpu.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     fn write_word(&mut self, register: Register, value: u16) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.70s
[INFO] running `"docker" "inspect" "c9a682813eac7eccf07ef137486d948e515accba5f1e3576597f38770dae69ec"`
[INFO] running `"docker" "rm" "-f" "c9a682813eac7eccf07ef137486d948e515accba5f1e3576597f38770dae69ec"`
[INFO] [stdout] c9a682813eac7eccf07ef137486d948e515accba5f1e3576597f38770dae69ec