[INFO] updating cached repository https://github.com/mark2b/fb2d
[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] fa61032802aa29c138c8e6aaeacd7732c9933691
[INFO] checking mark2b/fb2d against master#bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc for pr-70917
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmark2b%2Ffb2d" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mark2b/fb2d on toolchain bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/mark2b/fb2d
[INFO] removed 0 missing examples
[INFO] finished tweaking git repo https://github.com/mark2b/fb2d
[INFO] tweaked toml for git repo https://github.com/mark2b/fb2d written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/mark2b/fb2d already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+bf1f2eedda4fa02b7c9347dd849ed73ddd43dedc" "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] a9c4b4a389b31caa431655c53a8a39338e5c78aee6e308779931bcfaf80e6766
[INFO] running `"docker" "start" "-a" "a9c4b4a389b31caa431655c53a8a39338e5c78aee6e308779931bcfaf80e6766"`
[INFO] [stderr]     Checking libc v0.2.39
[INFO] [stderr]     Checking remove_dir_all v0.5.0
[INFO] [stderr]     Checking transformation-pipeline v0.1.0
[INFO] [stderr]    Compiling miniz_oxide_c_api v0.1.2
[INFO] [stderr]     Checking stb_truetype v0.2.2
[INFO] [stderr]     Checking xml-rs v0.7.0
[INFO] [stderr]     Checking num-iter v0.1.35
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking ordered-float v0.5.0
[INFO] [stderr]     Checking png v0.11.0
[INFO] [stderr]     Checking rusttype v0.5.2
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking miniz_oxide v0.1.2
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking bzip2-sys v0.1.6
[INFO] [stderr]     Checking time v0.1.39
[INFO] [stderr]     Checking atty v0.2.8
[INFO] [stderr]     Checking nix v0.9.0
[INFO] [stderr]     Checking memmap v0.5.2
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]     Checking bzip2 v0.3.2
[INFO] [stderr]     Checking msdos_time v0.1.5
[INFO] [stderr]    Compiling vergen v0.1.1
[INFO] [stderr]     Checking rayon-core v1.4.0
[INFO] [stderr]     Checking uuid v0.6.2
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]    Compiling fb2d v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking flate2 v1.0.1
[INFO] [stderr]     Checking rayon v1.0.1
[INFO] [stderr]     Checking zip v0.2.8
[INFO] [stderr]     Checking unzip v0.1.0
[INFO] [stderr]     Checking ctrlc v3.1.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.14
[INFO] [stderr]     Checking image v0.18.0
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/screen_writer.rs:72:6
[INFO] [stderr]    |
[INFO] [stderr] 72 | impl ScreenWriter {}
[INFO] [stderr]    |      ^^^^^^^^^^^^ help: use `dyn`: `dyn ScreenWriter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/node.rs:20:17
[INFO] [stderr]    |
[INFO] [stderr] 20 |     sprite: Box<Sprite<'a>>,
[INFO] [stderr]    |                 ^^^^^^^^^^ help: use `dyn`: `dyn Sprite<'a>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/scene.rs:17:28
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub writer: Option<Box<ScreenWriter>>,
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: use `dyn`: `dyn ScreenWriter`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/sprite.rs:16:10
[INFO] [stderr]    |
[INFO] [stderr] 16 | impl<'a> Sprite<'a> {}
[INFO] [stderr]    |          ^^^^^^^^^^ help: use `dyn`: `dyn Sprite<'a>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/screen_writer.rs:72:6
[INFO] [stderr]    |
[INFO] [stderr] 72 | impl ScreenWriter {}
[INFO] [stderr]    |      ^^^^^^^^^^^^ help: use `dyn`: `dyn ScreenWriter`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/node.rs:20:17
[INFO] [stderr]    |
[INFO] [stderr] 20 |     sprite: Box<Sprite<'a>>,
[INFO] [stderr]    |                 ^^^^^^^^^^ help: use `dyn`: `dyn Sprite<'a>`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/scene.rs:17:28
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub writer: Option<Box<ScreenWriter>>,
[INFO] [stderr]    |                            ^^^^^^^^^^^^ help: use `dyn`: `dyn ScreenWriter`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/sprite.rs:16:10
[INFO] [stderr]    |
[INFO] [stderr] 16 | impl<'a> Sprite<'a> {}
[INFO] [stderr]    |          ^^^^^^^^^^ help: use `dyn`: `dyn Sprite<'a>`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/texture.rs:63:17
[INFO] [stderr]    |
[INFO] [stderr] 63 |             Err(e) => {
[INFO] [stderr]    |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/texture.rs:63:17
[INFO] [stderr]    |
[INFO] [stderr] 63 |             Err(e) => {
[INFO] [stderr]    |                 ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/scene.rs:73:21
[INFO] [stderr]    |
[INFO] [stderr] 73 |                 let mut children_keys = key_cell.borrow_mut();
[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/scene.rs:101:29
[INFO] [stderr]     |
[INFO] [stderr] 101 |                         let mut children_keys = key_cell.borrow_mut();
[INFO] [stderr]     |                             ----^^^^^^^^^^^^^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/scene.rs:120:21
[INFO] [stderr]     |
[INFO] [stderr] 120 |                 let mut children_keys = key_cell.borrow_mut();
[INFO] [stderr]     |                     ----^^^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/scene.rs:134:29
[INFO] [stderr]     |
[INFO] [stderr] 134 |                         let mut children_keys = key_cell.borrow_mut();
[INFO] [stderr]     |                             ----^^^^^^^^^^^^^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/scene.rs:154:21
[INFO] [stderr]     |
[INFO] [stderr] 154 |                 let mut children_keys = key_cell.borrow_mut();
[INFO] [stderr]     |                     ----^^^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/scene.rs:177:29
[INFO] [stderr]     |
[INFO] [stderr] 177 |                         let mut children_keys = key_cell.borrow_mut();
[INFO] [stderr]     |                             ----^^^^^^^^^^^^^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/scene.rs:73:21
[INFO] [stderr]    |
[INFO] [stderr] 73 |                 let mut children_keys = key_cell.borrow_mut();
[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/scene.rs:101:29
[INFO] [stderr]     |
[INFO] [stderr] 101 |                         let mut children_keys = key_cell.borrow_mut();
[INFO] [stderr]     |                             ----^^^^^^^^^^^^^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/scene.rs:120:21
[INFO] [stderr]     |
[INFO] [stderr] 120 |                 let mut children_keys = key_cell.borrow_mut();
[INFO] [stderr]     |                     ----^^^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/scene.rs:134:29
[INFO] [stderr]     |
[INFO] [stderr] 134 |                         let mut children_keys = key_cell.borrow_mut();
[INFO] [stderr]     |                             ----^^^^^^^^^^^^^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/scene.rs:154:21
[INFO] [stderr]     |
[INFO] [stderr] 154 |                 let mut children_keys = key_cell.borrow_mut();
[INFO] [stderr]     |                     ----^^^^^^^^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/scene.rs:177:29
[INFO] [stderr]     |
[INFO] [stderr] 177 |                         let mut children_keys = key_cell.borrow_mut();
[INFO] [stderr]     |                             ----^^^^^^^^^^^^^
[INFO] [stderr]     |                             |
[INFO] [stderr]     |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] error[E0308]: mismatched types
[INFO] [stderr]   --> examples/simple_sprite.rs:55:9
[INFO] [stderr]    |
[INFO] [stderr] 55 |         sprite2,
[INFO] [stderr]    |         ^^^^^^^ expected struct `fb2d::TextureSprite`, found enum `std::result::Result`
[INFO] [stderr]    |
[INFO] [stderr]    = note: expected struct `fb2d::TextureSprite`
[INFO] [stderr]                 found enum `std::result::Result<fb2d::TextureSprite, &str>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0308`.
[INFO] [stderr] error: could not compile `fb2d`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> bin/show.rs:42:17
[INFO] [stderr]    |
[INFO] [stderr] 42 |             let mut fb = fb2d::screen_writer_for_framebuffer("/dev/fb0")?;
[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]   --> bin/show.rs:42:17
[INFO] [stderr]    |
[INFO] [stderr] 42 |             let mut fb = fb2d::screen_writer_for_framebuffer("/dev/fb0")?;
[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] error: build failed
[INFO] running `"docker" "inspect" "a9c4b4a389b31caa431655c53a8a39338e5c78aee6e308779931bcfaf80e6766"`
[INFO] running `"docker" "rm" "-f" "a9c4b4a389b31caa431655c53a8a39338e5c78aee6e308779931bcfaf80e6766"`
[INFO] [stdout] a9c4b4a389b31caa431655c53a8a39338e5c78aee6e308779931bcfaf80e6766
