[INFO] updating cached repository https://github.com/ColonelPhantom/hufmark
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/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] 335366c2a08914a67974d7c48e167fb806823c2d
[INFO] checking ColonelPhantom/hufmark against try#00e4530a79c42b21a6ca2ac1edb597c90d21f89f for pr-64672
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FColonelPhantom%2Fhufmark" "work/builds/worker-3/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ColonelPhantom/hufmark on toolchain 00e4530a79c42b21a6ca2ac1edb597c90d21f89f
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ColonelPhantom/hufmark
[INFO] finished tweaking git repo https://github.com/ColonelPhantom/hufmark
[INFO] tweaked toml for git repo https://github.com/ColonelPhantom/hufmark written to work/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/ColonelPhantom/hufmark already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-3/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8c2368794089cd88fabe2b13c54b8e386db778718634b00e64962229293a27eb
[INFO] running `"docker" "start" "-a" "8c2368794089cd88fabe2b13c54b8e386db778718634b00e64962229293a27eb"`
[INFO] [stderr]    Compiling libc v0.2.61
[INFO] [stderr]     Checking plain-map v0.1.0
[INFO] [stderr]     Checking slice-deque v0.2.4
[INFO] [stderr]     Checking hufmark v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `vec`
[INFO] [stderr]    --> src/markov.rs:131:13
[INFO] [stderr]     |
[INFO] [stderr] 131 |         let vec: Vec<_> = p.possibilities.iter().filter(|(_,v)| *v > 0).collect();
[INFO] [stderr]     |             ^^^ help: consider prefixing with an underscore: `_vec`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/markov.rs:119:13
[INFO] [stderr]     |
[INFO] [stderr] 119 |         let mut p = &mut MarkovValue::new();
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/markov.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_entry_occs`
[INFO] [stderr]    --> src/markov.rs:153:5
[INFO] [stderr]     |
[INFO] [stderr] 153 |     pub fn get_entry_occs(&self) -> std::collections::BTreeMap<u32, u32> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_entry_lens`
[INFO] [stderr]    --> src/markov.rs:160:5
[INFO] [stderr]     |
[INFO] [stderr] 160 |     pub fn get_entry_lens(&self) -> std::collections::BTreeMap<usize, u32> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get`
[INFO] [stderr]   --> src/history.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn get(&self, idx: usize) -> Option<&T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `vec`
[INFO] [stderr]    --> src/markov.rs:131:13
[INFO] [stderr]     |
[INFO] [stderr] 131 |         let vec: Vec<_> = p.possibilities.iter().filter(|(_,v)| *v > 0).collect();
[INFO] [stderr]     |             ^^^ help: consider prefixing with an underscore: `_vec`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/markov.rs:119:13
[INFO] [stderr]     |
[INFO] [stderr] 119 |         let mut p = &mut MarkovValue::new();
[INFO] [stderr]     |             ----^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/markov.rs:76:5
[INFO] [stderr]    |
[INFO] [stderr] 76 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_entry_occs`
[INFO] [stderr]    --> src/markov.rs:153:5
[INFO] [stderr]     |
[INFO] [stderr] 153 |     pub fn get_entry_occs(&self) -> std::collections::BTreeMap<u32, u32> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_entry_lens`
[INFO] [stderr]    --> src/markov.rs:160:5
[INFO] [stderr]     |
[INFO] [stderr] 160 |     pub fn get_entry_lens(&self) -> std::collections::BTreeMap<usize, u32> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get`
[INFO] [stderr]   --> src/history.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn get(&self, idx: usize) -> Option<&T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.34s
[INFO] running `"docker" "inspect" "8c2368794089cd88fabe2b13c54b8e386db778718634b00e64962229293a27eb"`
[INFO] running `"docker" "rm" "-f" "8c2368794089cd88fabe2b13c54b8e386db778718634b00e64962229293a27eb"`
[INFO] [stdout] 8c2368794089cd88fabe2b13c54b8e386db778718634b00e64962229293a27eb