[INFO] updating cached repository https://github.com/liamzdenek/caption-reading-speed
[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] a84e8e9d30011f974c05356b289bede388dde9b0
[INFO] checking liamzdenek/caption-reading-speed against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliamzdenek%2Fcaption-reading-speed" "/workspace/builds/worker-13/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/liamzdenek/caption-reading-speed on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/liamzdenek/caption-reading-speed
[INFO] finished tweaking git repo https://github.com/liamzdenek/caption-reading-speed
[INFO] tweaked toml for git repo https://github.com/liamzdenek/caption-reading-speed written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/liamzdenek/caption-reading-speed already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e48467d0e0eb2492f958c2a707864f4f60cfa70716023b2ec33f2146d0914d66
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "e48467d0e0eb2492f958c2a707864f4f60cfa70716023b2ec33f2146d0914d66"`
[INFO] [stderr]    Compiling libc v0.2.55
[INFO] [stderr]    Compiling derive_builder v0.7.1
[INFO] [stderr]    Compiling backtrace v0.3.26
[INFO] [stderr]    Compiling quote v0.6.12
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]     Checking backtrace-sys v0.1.28
[INFO] [stderr]    Compiling darling_core v0.8.6
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling darling_macro v0.8.6
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]    Compiling darling v0.8.6
[INFO] [stderr]    Compiling derive_builder_core v0.4.1
[INFO] [stderr]     Checking reading-speed v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:23:6
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let mut file = File::open(filename)?;
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:25:6
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let mut buf_reader = BufReader::new(file);
[INFO] [stderr]    |         ----^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `encode`
[INFO] [stderr]    --> src/main.rs:103:2
[INFO] [stderr]     |
[INFO] [stderr] 103 |     fn encode() -> Result<String, Error> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `duration_float` has been stable since 1.38.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(duration_float)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:23:6
[INFO] [stderr]    |
[INFO] [stderr] 23 |     let mut file = File::open(filename)?;
[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: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:25:6
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let mut buf_reader = BufReader::new(file);
[INFO] [stderr]    |         ----^^^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `startTime` should have a snake case name
[INFO] [stderr]    --> src/main.rs:111:2
[INFO] [stderr]     |
[INFO] [stderr] 111 |     startTime: Duration,
[INFO] [stderr]     |     ^^^^^^^^^ help: convert the identifier to snake case: `start_time`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `endTime` should have a snake case name
[INFO] [stderr]    --> src/main.rs:112:2
[INFO] [stderr]     |
[INFO] [stderr] 112 |     endTime: Duration,
[INFO] [stderr]     |     ^^^^^^^ help: convert the identifier to snake case: `end_time`
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `startTime` should have a snake case name
[INFO] [stderr]    --> src/main.rs:111:2
[INFO] [stderr]     |
[INFO] [stderr] 111 |     startTime: Duration,
[INFO] [stderr]     |     ^^^^^^^^^ help: convert the identifier to snake case: `start_time`
[INFO] [stderr] 
[INFO] [stderr] warning: method `startTime` should have a snake case name
[INFO] [stderr]    --> src/main.rs:111:2
[INFO] [stderr]     |
[INFO] [stderr] 111 |     startTime: Duration,
[INFO] [stderr]     |     ^^^^^^^^^ help: convert the identifier to snake case: `start_time`
[INFO] [stderr] 
[INFO] [stderr] warning: method `endTime` should have a snake case name
[INFO] [stderr]    --> src/main.rs:112:2
[INFO] [stderr]     |
[INFO] [stderr] 112 |     endTime: Duration,
[INFO] [stderr]     |     ^^^^^^^ help: convert the identifier to snake case: `end_time`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `encode`
[INFO] [stderr]    --> src/main.rs:103:2
[INFO] [stderr]     |
[INFO] [stderr] 103 |     fn encode() -> Result<String, Error> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `duration_float` has been stable since 1.38.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(duration_float)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `startTime` should have a snake case name
[INFO] [stderr]    --> src/main.rs:111:2
[INFO] [stderr]     |
[INFO] [stderr] 111 |     startTime: Duration,
[INFO] [stderr]     |     ^^^^^^^^^ help: convert the identifier to snake case: `start_time`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `endTime` should have a snake case name
[INFO] [stderr]    --> src/main.rs:112:2
[INFO] [stderr]     |
[INFO] [stderr] 112 |     endTime: Duration,
[INFO] [stderr]     |     ^^^^^^^ help: convert the identifier to snake case: `end_time`
[INFO] [stderr] 
[INFO] [stderr] warning: structure field `startTime` should have a snake case name
[INFO] [stderr]    --> src/main.rs:111:2
[INFO] [stderr]     |
[INFO] [stderr] 111 |     startTime: Duration,
[INFO] [stderr]     |     ^^^^^^^^^ help: convert the identifier to snake case: `start_time`
[INFO] [stderr] 
[INFO] [stderr] warning: method `startTime` should have a snake case name
[INFO] [stderr]    --> src/main.rs:111:2
[INFO] [stderr]     |
[INFO] [stderr] 111 |     startTime: Duration,
[INFO] [stderr]     |     ^^^^^^^^^ help: convert the identifier to snake case: `start_time`
[INFO] [stderr] 
[INFO] [stderr] warning: method `endTime` should have a snake case name
[INFO] [stderr]    --> src/main.rs:112:2
[INFO] [stderr]     |
[INFO] [stderr] 112 |     endTime: Duration,
[INFO] [stderr]     |     ^^^^^^^ help: convert the identifier to snake case: `end_time`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.93s
[INFO] running `"docker" "inspect" "e48467d0e0eb2492f958c2a707864f4f60cfa70716023b2ec33f2146d0914d66"`
[INFO] running `"docker" "rm" "-f" "e48467d0e0eb2492f958c2a707864f4f60cfa70716023b2ec33f2146d0914d66"`
[INFO] [stdout] e48467d0e0eb2492f958c2a707864f4f60cfa70716023b2ec33f2146d0914d66