[INFO] cloning repository https://github.com/MattBJ/mgba_gaming_agent
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MattBJ/mgba_gaming_agent" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMattBJ%2Fmgba_gaming_agent", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMattBJ%2Fmgba_gaming_agent'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 89d82e62b2af61c1c89c65d61fb8b05441ec3d13
[INFO] checking MattBJ/mgba_gaming_agent against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMattBJ%2Fmgba_gaming_agent" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MattBJ/mgba_gaming_agent on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MattBJ/mgba_gaming_agent
[INFO] finished tweaking git repo https://github.com/MattBJ/mgba_gaming_agent
[INFO] tweaked toml for git repo https://github.com/MattBJ/mgba_gaming_agent written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/MattBJ/mgba_gaming_agent 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fork v0.1.23
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[INFO] [stderr]   Downloaded sdl2-sys v0.36.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2a12b9aacdb559a943f72b178a29d492370dec600c9338bedc48de715638e35b
[INFO] running `Command { std: "docker" "start" "-a" "2a12b9aacdb559a943f72b178a29d492370dec600c9338bedc48de715638e35b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a12b9aacdb559a943f72b178a29d492370dec600c9338bedc48de715638e35b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a12b9aacdb559a943f72b178a29d492370dec600c9338bedc48de715638e35b", kill_on_drop: false }`
[INFO] [stdout] 2a12b9aacdb559a943f72b178a29d492370dec600c9338bedc48de715638e35b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d4d869ac3f69034ff6ada4fbfa987c069fceefce9ca3c0c577ab056f16576802
[INFO] running `Command { std: "docker" "start" "-a" "d4d869ac3f69034ff6ada4fbfa987c069fceefce9ca3c0c577ab056f16576802", kill_on_drop: false }`
[INFO] [stderr]    Compiling crossbeam-utils v0.8.19
[INFO] [stderr]     Checking simd-adler32 v0.3.7
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]    Compiling version-compare v0.1.1
[INFO] [stderr]    Compiling syn v2.0.52
[INFO] [stderr]    Compiling proc-macro2-diagnostics v0.10.1
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]    Compiling sdl2-sys v0.36.0
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling yansi v1.0.0-rc.1
[INFO] [stderr]     Checking weezl v0.1.8
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking spin v0.9.8
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]     Checking flume v0.11.0
[INFO] [stderr]     Checking fdeflate v0.3.4
[INFO] [stderr]    Compiling itertools v0.12.1
[INFO] [stderr]     Checking zune-inflate v0.2.54
[INFO] [stderr]     Checking crossbeam-epoch v0.9.18
[INFO] [stderr]     Checking half v2.4.0
[INFO] [stderr]    Compiling sdl2 v0.36.0
[INFO] [stderr]     Checking smallvec v1.13.1
[INFO] [stderr]    Compiling serde_json v1.0.114
[INFO] [stderr]     Checking bit_field v0.10.2
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[INFO] [stderr]     Checking ryu v1.0.17
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[INFO] [stderr]     Checking libloading v0.8.2
[INFO] [stderr]     Checking rayon v1.9.0
[INFO] [stderr]     Checking exr v1.72.0
[INFO] [stderr]     Checking argparse v0.2.2
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling ouroboros_macro v0.18.3
[INFO] [stderr]     Checking jpeg-decoder v0.3.1
[INFO] [stderr]     Checking tiff v0.9.1
[INFO] [stderr]     Checking ouroboros v0.18.3
[INFO] [stderr]     Checking image v0.24.9
[INFO] [stderr]     Checking mgba_gaming_agent v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/agent_stuff/observation.rs:117:44
[INFO] [stdout]     |
[INFO] [stdout] 117 |             .for_each(|([a,b,c,_],d)| *d = (( (0.2989*((a) as f32)) + (0.5870*((b) as f32)) + (0.114*((c) as f32))) as u8));
[INFO] [stdout]     |                                            ^                                                                             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 117 -             .for_each(|([a,b,c,_],d)| *d = (( (0.2989*((a) as f32)) + (0.5870*((b) as f32)) + (0.114*((c) as f32))) as u8));
[INFO] [stdout] 117 +             .for_each(|([a,b,c,_],d)| *d = ( (0.2989*((a) as f32)) + (0.5870*((b) as f32)) + (0.114*((c) as f32))) as u8);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Option` is imported redundantly
[INFO] [stdout]   --> src/agent_stuff.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::option::Option;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Option` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/agent_stuff.rs:337:36
[INFO] [stdout]     |
[INFO] [stdout] 337 | ...                   if (0!=((cycle_counter+1) % (cycles_ignore+1))) {
[INFO] [stdout]     |                          ^                                          ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 337 -                                 if (0!=((cycle_counter+1) % (cycles_ignore+1))) {
[INFO] [stdout] 337 +                                 if 0!=((cycle_counter+1) % (cycles_ignore+1)) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]    --> src/agent_stuff/observation.rs:117:44
[INFO] [stdout]     |
[INFO] [stdout] 117 |             .for_each(|([a,b,c,_],d)| *d = (( (0.2989*((a) as f32)) + (0.5870*((b) as f32)) + (0.114*((c) as f32))) as u8));
[INFO] [stdout]     |                                            ^                                                                             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 117 -             .for_each(|([a,b,c,_],d)| *d = (( (0.2989*((a) as f32)) + (0.5870*((b) as f32)) + (0.114*((c) as f32))) as u8));
[INFO] [stdout] 117 +             .for_each(|([a,b,c,_],d)| *d = ( (0.2989*((a) as f32)) + (0.5870*((b) as f32)) + (0.114*((c) as f32))) as u8);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Option` is imported redundantly
[INFO] [stdout]   --> src/agent_stuff.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::option::Option;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]    |
[INFO] [stdout]    = note: the item `Option` is already defined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/agent_stuff.rs:337:36
[INFO] [stdout]     |
[INFO] [stdout] 337 | ...                   if (0!=((cycle_counter+1) % (cycles_ignore+1))) {
[INFO] [stdout]     |                          ^                                          ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 337 -                                 if (0!=((cycle_counter+1) % (cycles_ignore+1))) {
[INFO] [stdout] 337 +                                 if 0!=((cycle_counter+1) % (cycles_ignore+1)) {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/agent_stuff.rs:390:33
[INFO] [stdout]     |
[INFO] [stdout] 387 | ...                   break 'agent_loop_cycle;
[INFO] [stdout]     |                       ----------------------- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 390 | ...                   FRAME_COUNTER += 1;
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/agent_stuff.rs:390:33
[INFO] [stdout]     |
[INFO] [stdout] 387 | ...                   break 'agent_loop_cycle;
[INFO] [stdout]     |                       ----------------------- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 390 | ...                   FRAME_COUNTER += 1;
[INFO] [stdout]     |                       ^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/agent_stuff.rs:293:13
[INFO] [stdout]     |
[INFO] [stdout] 293 |         let mut ret_val: Option<observation::ObservationSet> 
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_size` and `write_buffer` are never used
[INFO] [stdout]   --> src/agent_stuff/observation.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 66 | impl FrameBuffer {
[INFO] [stdout]    | ---------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 85 |     pub fn get_size(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 94 |     pub fn write_buffer(&mut self, data: &[u8]) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `push` is never used
[INFO] [stdout]    --> src/agent_stuff/observation.rs:261:12
[INFO] [stdout]     |
[INFO] [stdout] 159 | impl ObservationSet {
[INFO] [stdout]     | ------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 261 |     pub fn push(&mut self, data: ObservationData) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/agent_stuff.rs:293:13
[INFO] [stdout]     |
[INFO] [stdout] 293 |         let mut ret_val: Option<observation::ObservationSet> 
[INFO] [stdout]     |             ----^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_size` and `write_buffer` are never used
[INFO] [stdout]   --> src/agent_stuff/observation.rs:85:12
[INFO] [stdout]    |
[INFO] [stdout] 66 | impl FrameBuffer {
[INFO] [stdout]    | ---------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 85 |     pub fn get_size(&self) -> usize {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 94 |     pub fn write_buffer(&mut self, data: &[u8]) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `push` is never used
[INFO] [stdout]    --> src/agent_stuff/observation.rs:261:12
[INFO] [stdout]     |
[INFO] [stdout] 159 | impl ObservationSet {
[INFO] [stdout]     | ------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 261 |     pub fn push(&mut self, data: ObservationData) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 03s
[INFO] running `Command { std: "docker" "inspect" "d4d869ac3f69034ff6ada4fbfa987c069fceefce9ca3c0c577ab056f16576802", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4d869ac3f69034ff6ada4fbfa987c069fceefce9ca3c0c577ab056f16576802", kill_on_drop: false }`
[INFO] [stdout] d4d869ac3f69034ff6ada4fbfa987c069fceefce9ca3c0c577ab056f16576802