[INFO] cloning repository https://github.com/rphsoftware/video-to-subtitle
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rphsoftware/video-to-subtitle" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frphsoftware%2Fvideo-to-subtitle", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frphsoftware%2Fvideo-to-subtitle'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d1b2f64ca235a284676bb37ec6ebc6d1c4873d8c
[INFO] checking rphsoftware/video-to-subtitle against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frphsoftware%2Fvideo-to-subtitle" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/rphsoftware/video-to-subtitle
[INFO] finished tweaking git repo https://github.com/rphsoftware/video-to-subtitle
[INFO] tweaked toml for git repo https://github.com/rphsoftware/video-to-subtitle written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rphsoftware/video-to-subtitle on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rphsoftware/video-to-subtitle 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b23fff37b246081432b7d14e864a4044dbee703c7cac0f770089173f33a8c56
[INFO] running `Command { std: "docker" "start" "-a" "6b23fff37b246081432b7d14e864a4044dbee703c7cac0f770089173f33a8c56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b23fff37b246081432b7d14e864a4044dbee703c7cac0f770089173f33a8c56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b23fff37b246081432b7d14e864a4044dbee703c7cac0f770089173f33a8c56", kill_on_drop: false }`
[INFO] [stdout] 6b23fff37b246081432b7d14e864a4044dbee703c7cac0f770089173f33a8c56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5bfe8ace370039f41485b5372b15788e3a841fee0011a2137be880969cebfd74
[INFO] running `Command { std: "docker" "start" "-a" "5bfe8ace370039f41485b5372b15788e3a841fee0011a2137be880969cebfd74", kill_on_drop: false }`
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling libc v0.2.74
[INFO] [stderr]    Compiling rayon-core v1.7.1
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling rayon v1.3.1
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking miniz_oxide v0.3.7
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]     Checking crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking png v0.16.7
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking video-to-subtitle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/framebuffer.rs:130:12
[INFO] [stdout]     |
[INFO] [stdout] 130 |         if (invert) {
[INFO] [stdout]     |            ^      ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 130 -         if (invert) {
[INFO] [stdout] 130 +         if invert  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/framebuffer.rs:130:12
[INFO] [stdout]     |
[INFO] [stdout] 130 |         if (invert) {
[INFO] [stdout]     |            ^      ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 130 -         if (invert) {
[INFO] [stdout] 130 +         if invert  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> src/framebuffer.rs:137:49
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub fn create_ass_line(&mut self, l: usize, start: u64, len: u64) -> String {
[INFO] [stdout]     |                                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/framebuffer.rs:137:61
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub fn create_ass_line(&mut self, l: usize, start: u64, len: u64) -> String {
[INFO] [stdout]     |                                                             ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> src/framebuffer.rs:147:58
[INFO] [stdout]     |
[INFO] [stdout] 147 |     pub fn create_inverted_ass_line(&mut self, l: usize, start: u64, len: u64) -> String {
[INFO] [stdout]     |                                                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/framebuffer.rs:147:70
[INFO] [stdout]     |
[INFO] [stdout] 147 |     pub fn create_inverted_ass_line(&mut self, l: usize, start: u64, len: u64) -> String {
[INFO] [stdout]     |                                                                      ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_timestamp_string` is never used
[INFO] [stdout]   --> src/framebuffer.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn create_timestamp_string(u: u64) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:131:38
[INFO] [stdout]     |
[INFO] [stdout] 131 |             let iminfo = convert_png((&*args[2]).parse().unwrap(), "_________tmp.asstxt".parse().unwrap(), start, end - start);
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:131:68
[INFO] [stdout]     |
[INFO] [stdout] 131 |             let iminfo = convert_png((&*args[2]).parse().unwrap(), "_________tmp.asstxt".parse().unwrap(), start, end - start);
[INFO] [stdout]     |                                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `video-to-subtitle` (bin "video-to-subtitle") due to 2 previous errors; 6 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> src/framebuffer.rs:137:49
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub fn create_ass_line(&mut self, l: usize, start: u64, len: u64) -> String {
[INFO] [stdout]     |                                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/framebuffer.rs:137:61
[INFO] [stdout]     |
[INFO] [stdout] 137 |     pub fn create_ass_line(&mut self, l: usize, start: u64, len: u64) -> String {
[INFO] [stdout]     |                                                             ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> src/framebuffer.rs:147:58
[INFO] [stdout]     |
[INFO] [stdout] 147 |     pub fn create_inverted_ass_line(&mut self, l: usize, start: u64, len: u64) -> String {
[INFO] [stdout]     |                                                          ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/framebuffer.rs:147:70
[INFO] [stdout]     |
[INFO] [stdout] 147 |     pub fn create_inverted_ass_line(&mut self, l: usize, start: u64, len: u64) -> String {
[INFO] [stdout]     |                                                                      ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `create_timestamp_string` is never used
[INFO] [stdout]   --> src/framebuffer.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub fn create_timestamp_string(u: u64) -> String {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:131:38
[INFO] [stdout]     |
[INFO] [stdout] 131 |             let iminfo = convert_png((&*args[2]).parse().unwrap(), "_________tmp.asstxt".parse().unwrap(), start, end - start);
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]    --> src/main.rs:131:68
[INFO] [stdout]     |
[INFO] [stdout] 131 |             let iminfo = convert_png((&*args[2]).parse().unwrap(), "_________tmp.asstxt".parse().unwrap(), start, end - start);
[INFO] [stdout]     |                                                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `video-to-subtitle` (bin "video-to-subtitle" test) due to 2 previous errors; 6 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "5bfe8ace370039f41485b5372b15788e3a841fee0011a2137be880969cebfd74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bfe8ace370039f41485b5372b15788e3a841fee0011a2137be880969cebfd74", kill_on_drop: false }`
[INFO] [stdout] 5bfe8ace370039f41485b5372b15788e3a841fee0011a2137be880969cebfd74