[INFO] updating cached repository https://github.com/liamoc/tesserae
[INFO] running `Command { std: "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", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a43e56aa7312c1710160acbbe25d383d91046951
[INFO] testing liamoc/tesserae against 1.45.2 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliamoc%2Ftesserae" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/liamoc/tesserae on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/liamoc/tesserae
[INFO] finished tweaking git repo https://github.com/liamoc/tesserae
[INFO] tweaked toml for git repo https://github.com/liamoc/tesserae written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/liamoc/tesserae already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-14/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[INFO] the lockfile is outdated, regenerating it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 `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6d4db3566f70a54275523e9bf7bc14f6456fa80ca23dfb81fa4696f8e1f7be56
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6d4db3566f70a54275523e9bf7bc14f6456fa80ca23dfb81fa4696f8e1f7be56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d4db3566f70a54275523e9bf7bc14f6456fa80ca23dfb81fa4696f8e1f7be56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d4db3566f70a54275523e9bf7bc14f6456fa80ca23dfb81fa4696f8e1f7be56", kill_on_drop: false }`
[INFO] [stdout] 6d4db3566f70a54275523e9bf7bc14f6456fa80ca23dfb81fa4696f8e1f7be56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 701b0f4a9e29fb7946c72d41f1b78dc5e174d8b9aa6c3cb201282ba9060749cb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "701b0f4a9e29fb7946c72d41f1b78dc5e174d8b9aa6c3cb201282ba9060749cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling sdl2 v0.33.0
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling sdl2-sys v0.33.0
[INFO] [stderr]    Compiling tesserae v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around const expression
[INFO] [stdout]    --> src/lib.rs:583:40
[INFO] [stdout]     |
[INFO] [stdout] 583 |         let mut pixel_data = [0 as u8; (64 * 4)];        
[INFO] [stdout]     |                                        ^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.37s
[INFO] running `Command { std: "docker" "inspect" "701b0f4a9e29fb7946c72d41f1b78dc5e174d8b9aa6c3cb201282ba9060749cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "701b0f4a9e29fb7946c72d41f1b78dc5e174d8b9aa6c3cb201282ba9060749cb", kill_on_drop: false }`
[INFO] [stdout] 701b0f4a9e29fb7946c72d41f1b78dc5e174d8b9aa6c3cb201282ba9060749cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 216af8df2927272291391d35a67c76d3ba5b8713b5ce8212cb4180c2ed49362a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "216af8df2927272291391d35a67c76d3ba5b8713b5ce8212cb4180c2ed49362a", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling bit_reverse v0.1.8
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stdout] warning: unnecessary parentheses around const expression
[INFO] [stdout]    --> src/lib.rs:583:40
[INFO] [stdout]     |
[INFO] [stdout] 583 |         let mut pixel_data = [0 as u8; (64 * 4)];        
[INFO] [stdout]     |                                        ^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling clap v2.33.2
[INFO] [stderr]    Compiling tesserae v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around const expression
[INFO] [stdout]    --> src/lib.rs:583:40
[INFO] [stdout]     |
[INFO] [stdout] 583 |         let mut pixel_data = [0 as u8; (64 * 4)];        
[INFO] [stdout]     |                                        ^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 17.11s
[INFO] running `Command { std: "docker" "inspect" "216af8df2927272291391d35a67c76d3ba5b8713b5ce8212cb4180c2ed49362a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "216af8df2927272291391d35a67c76d3ba5b8713b5ce8212cb4180c2ed49362a", kill_on_drop: false }`
[INFO] [stdout] 216af8df2927272291391d35a67c76d3ba5b8713b5ce8212cb4180c2ed49362a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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=warn" "-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@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 81336ef314b6105a6cc330d5c1e70ab71c71575eed506e3f80291a3c3eecef8f
[INFO] running `Command { std: "docker" "start" "-a" "81336ef314b6105a6cc330d5c1e70ab71c71575eed506e3f80291a3c3eecef8f", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary parentheses around const expression
[INFO] [stderr]    --> src/lib.rs:583:40
[INFO] [stderr]     |
[INFO] [stderr] 583 |         let mut pixel_data = [0 as u8; (64 * 4)];        
[INFO] [stderr]     |                                        ^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around const expression
[INFO] [stderr]    --> src/lib.rs:583:40
[INFO] [stderr]     |
[INFO] [stderr] 583 |         let mut pixel_data = [0 as u8; (64 * 4)];        
[INFO] [stderr]     |                                        ^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/tesserae-fecc335b6ff47604
[INFO] [stderr]    Doc-tests tesserae
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test src/lib.rs - Graphic<()>::load_file (line 317) ... FAILED
[INFO] [stdout] test src/lib.rs - Graphic<()>::load_from (line 329) ... FAILED
[INFO] [stdout] test src/lib.rs - Graphic<()>::blank (line 370) ... FAILED
[INFO] [stdout] test src/lib.rs - TileSet::load_from (line 169) ... FAILED
[INFO] [stdout] test src/lib.rs - Graphic<()>::textured (line 381) ... FAILED
[INFO] [stdout] test src/lib.rs - Graphic<()>::tile_cache_textured (line 400) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - Graphic<()>::load_file (line 317) stdout ----
[INFO] [stdout] error: expected one of `.`, `;`, `?`, `}`, or an operator, found `Graphic`
[INFO] [stdout]  --> src/lib.rs:320:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | Graphic::load_file(path)
[INFO] [stdout]   |                         - expected one of `.`, `;`, `?`, `}`, or an operator
[INFO] [stdout] 4 | // same as
[INFO] [stdout] 5 | Graphic::load_from(File::open(path)?)
[INFO] [stdout]   | ^^^^^^^ unexpected token
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - Graphic<()>::load_from (line 329) stdout ----
[INFO] [stdout] error: expected `;`, found `}`
[INFO] [stdout]  --> src/lib.rs:330:69
[INFO] [stdout]   |
[INFO] [stdout] 3 | let g = Graphic::load_from(Cursor::new(&include_bytes!("file")[..]))
[INFO] [stdout]   |                                                                     ^ help: add `;` here
[INFO] [stdout] 4 | }
[INFO] [stdout]   | - unexpected token
[INFO] [stdout] 
[INFO] [stdout] error: couldn't read src/file: No such file or directory (os error 2)
[INFO] [stdout]  --> src/lib.rs:330:41
[INFO] [stdout]   |
[INFO] [stdout] 3 | let g = Graphic::load_from(Cursor::new(&include_bytes!("file")[..]))
[INFO] [stdout]   |                                         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Graphic`
[INFO] [stdout]  --> src/lib.rs:330:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | let g = Graphic::load_from(Cursor::new(&include_bytes!("file")[..]))
[INFO] [stdout]   |         ^^^^^^^ use of undeclared type or module `Graphic`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Cursor`
[INFO] [stdout]  --> src/lib.rs:330:28
[INFO] [stdout]   |
[INFO] [stdout] 3 | let g = Graphic::load_from(Cursor::new(&include_bytes!("file")[..]))
[INFO] [stdout]   |                            ^^^^^^ use of undeclared type or module `Cursor`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - Graphic<()>::blank (line 370) stdout ----
[INFO] [stdout] error: expected one of `.`, `;`, `?`, `}`, or an operator, found `Graphic`
[INFO] [stdout]  --> src/lib.rs:373:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | Graphic::blank(8,12)
[INFO] [stdout]   |                     - expected one of `.`, `;`, `?`, `}`, or an operator
[INFO] [stdout] 4 | // same as
[INFO] [stdout] 5 | Graphic::solid(8,12,Default::default())
[INFO] [stdout]   | ^^^^^^^ unexpected token
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - TileSet::load_from (line 169) stdout ----
[INFO] [stdout] error: couldn't read src/tile_set: No such file or directory (os error 2)
[INFO] [stdout]  --> src/lib.rs:170:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | let ts = include_bytes!("tile_set");
[INFO] [stdout]   |          ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `TileSet`
[INFO] [stdout]  --> src/lib.rs:171:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | TileSet::load_from(Cursor::new(&ts[..]))
[INFO] [stdout]   | ^^^^^^^ use of undeclared type or module `TileSet`
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Cursor`
[INFO] [stdout]  --> src/lib.rs:171:20
[INFO] [stdout]   |
[INFO] [stdout] 4 | TileSet::load_from(Cursor::new(&ts[..]))
[INFO] [stdout]   |                    ^^^^^^ use of undeclared type or module `Cursor`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - Graphic<()>::textured (line 381) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Graphics`
[INFO] [stdout]  --> src/lib.rs:382:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | let g = Graphics::load_file("path")?.textured(texture_creator);
[INFO] [stdout]   |         ^^^^^^^^ use of undeclared type or module `Graphics`
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `texture_creator` in this scope
[INFO] [stdout]  --> src/lib.rs:382:47
[INFO] [stdout]   |
[INFO] [stdout] 3 | let g = Graphics::load_file("path")?.textured(texture_creator);
[INFO] [stdout]   |                                               ^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
[INFO] [stdout]  --> src/lib.rs:382:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | / fn main() {
[INFO] [stdout] 3 | | let g = Graphics::load_file("path")?.textured(texture_creator);
[INFO] [stdout]   | |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 4 | | }
[INFO] [stdout]   | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `std::ops::Try` is not implemented for `()`
[INFO] [stdout]   = note: required by `std::ops::Try::from_error`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0425, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] ---- src/lib.rs - Graphic<()>::tile_cache_textured (line 400) stdout ----
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `Graphics`
[INFO] [stdout]  --> src/lib.rs:401:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | let g = Graphics::load_file("path")?.tile_cache_textured(texture_creator);
[INFO] [stdout]   |         ^^^^^^^^ use of undeclared type or module `Graphics`
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `texture_creator` in this scope
[INFO] [stdout]  --> src/lib.rs:401:58
[INFO] [stdout]   |
[INFO] [stdout] 3 | let g = Graphics::load_file("path")?.tile_cache_textured(texture_creator);
[INFO] [stdout]   |                                                          ^^^^^^^^^^^^^^^ not found in this scope
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `std::ops::Try`)
[INFO] [stdout]  --> src/lib.rs:401:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | / fn main() {
[INFO] [stdout] 3 | | let g = Graphics::load_file("path")?.tile_cache_textured(texture_creator);
[INFO] [stdout]   | |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot use the `?` operator in a function that returns `()`
[INFO] [stdout] 4 | | }
[INFO] [stdout]   | |_- this function should return `Result` or `Option` to accept `?`
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `std::ops::Try` is not implemented for `()`
[INFO] [stdout]   = note: required by `std::ops::Try::from_error`
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0425, E0433.
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - Graphic<()>::blank (line 370)
[INFO] [stdout]     src/lib.rs - Graphic<()>::load_file (line 317)
[INFO] [stdout]     src/lib.rs - Graphic<()>::load_from (line 329)
[INFO] [stdout]     src/lib.rs - Graphic<()>::textured (line 381)
[INFO] [stdout]     src/lib.rs - Graphic<()>::tile_cache_textured (line 400)
[INFO] [stdout]     src/lib.rs - TileSet::load_from (line 169)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 6 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "81336ef314b6105a6cc330d5c1e70ab71c71575eed506e3f80291a3c3eecef8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81336ef314b6105a6cc330d5c1e70ab71c71575eed506e3f80291a3c3eecef8f", kill_on_drop: false }`
[INFO] [stdout] 81336ef314b6105a6cc330d5c1e70ab71c71575eed506e3f80291a3c3eecef8f