[INFO] updating cached repository https://github.com/ladydraco/rust_markov
[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] 4473b91381d5cd634cb04afbf7239d90c8d6a14f
[INFO] checking ladydraco/rust_markov against master#45d050cde277b22a755847338f2acc2c7b834141 for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fladydraco%2Frust_markov" "/workspace/builds/worker-7/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ladydraco/rust_markov on toolchain 45d050cde277b22a755847338f2acc2c7b834141
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ladydraco/rust_markov
[INFO] finished tweaking git repo https://github.com/ladydraco/rust_markov
[INFO] tweaked toml for git repo https://github.com/ladydraco/rust_markov written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/ladydraco/rust_markov already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /workspace/builds/worker-7/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+45d050cde277b22a755847338f2acc2c7b834141" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+45d050cde277b22a755847338f2acc2c7b834141" "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] 7476f3358da48a83cee7592581a8994aa381ba559eb449945a7fd9999d1a5394
[INFO] running `"docker" "start" "-a" "7476f3358da48a83cee7592581a8994aa381ba559eb449945a7fd9999d1a5394"`
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking num-complex v0.1.43
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking rust_markov v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `rand::random`
[INFO] [stderr]  --> src/generate_text.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use rand::random;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp`
[INFO] [stderr]  --> src/form_watcher.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::cmp;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashSet`
[INFO] [stderr]   --> src/main.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | use std::collections::HashSet;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::random`
[INFO] [stderr]  --> src/generate_text.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use rand::random;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp`
[INFO] [stderr]  --> src/form_watcher.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::cmp;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashSet`
[INFO] [stderr]   --> src/main.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | use std::collections::HashSet;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `pair2` is never read
[INFO] [stderr]    --> src/main.rs:197:9
[INFO] [stderr]     |
[INFO] [stderr] 197 |     let mut pair2: (usize, usize) = (0, 0);
[INFO] [stderr]     |         ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `pair2` is never read
[INFO] [stderr]    --> src/main.rs:197:9
[INFO] [stderr]     |
[INFO] [stderr] 197 |     let mut pair2: (usize, usize) = (0, 0);
[INFO] [stderr]     |         ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `char_choice`
[INFO] [stderr]    --> src/generate_text.rs:119:14
[INFO] [stderr]     |
[INFO] [stderr] 119 |         for (char_choice, count) in choice_stats.options.iter() {
[INFO] [stderr]     |              ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_char_choice`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `count`
[INFO] [stderr]    --> src/generate_text.rs:119:27
[INFO] [stderr]     |
[INFO] [stderr] 119 |         for (char_choice, count) in choice_stats.options.iter() {
[INFO] [stderr]     |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `char_choice`
[INFO] [stderr]    --> src/generate_text.rs:119:14
[INFO] [stderr]     |
[INFO] [stderr] 119 |         for (char_choice, count) in choice_stats.options.iter() {
[INFO] [stderr]     |              ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_char_choice`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `count`
[INFO] [stderr]    --> src/generate_text.rs:119:27
[INFO] [stderr]     |
[INFO] [stderr] 119 |         for (char_choice, count) in choice_stats.options.iter() {
[INFO] [stderr]     |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_count`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `output_amount`
[INFO] [stderr]   --> src/generate_text.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     output_amount: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `use_html`
[INFO] [stderr]   --> src/generate_text.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     use_html: bool,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `distortion_factor`
[INFO] [stderr]   --> src/generate_text.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     distortion_factor: i32,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `output_amount`
[INFO] [stderr]   --> src/generate_text.rs:27:5
[INFO] [stderr]    |
[INFO] [stderr] 27 |     output_amount: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `use_html`
[INFO] [stderr]   --> src/generate_text.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     use_html: bool,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `distortion_factor`
[INFO] [stderr]   --> src/generate_text.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     distortion_factor: i32,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.07s
[INFO] running `"docker" "inspect" "7476f3358da48a83cee7592581a8994aa381ba559eb449945a7fd9999d1a5394"`
[INFO] running `"docker" "rm" "-f" "7476f3358da48a83cee7592581a8994aa381ba559eb449945a7fd9999d1a5394"`
[INFO] [stdout] 7476f3358da48a83cee7592581a8994aa381ba559eb449945a7fd9999d1a5394