[INFO] cloning repository https://github.com/carrotflakes/kantera [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/carrotflakes/kantera" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarrotflakes%2Fkantera", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarrotflakes%2Fkantera'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] c488ffdbafcf97978011ca60cbb5825a95871ce8 [INFO] checking carrotflakes/kantera against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcarrotflakes%2Fkantera" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/carrotflakes/kantera 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/carrotflakes/kantera [INFO] finished tweaking git repo https://github.com/carrotflakes/kantera [INFO] tweaked toml for git repo https://github.com/carrotflakes/kantera written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/carrotflakes/kantera 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 git repository `https://github.com/carrotflakes/gluten.git` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded gobject-sys v0.18.0 [INFO] [stderr] Downloaded cfg-expr v0.15.5 [INFO] [stderr] Downloaded system-deps v6.1.2 [INFO] [stderr] Downloaded transpose v0.1.0 [INFO] [stderr] Downloaded strength_reduce v0.2.3 [INFO] [stderr] Downloaded cairo-sys-rs v0.18.2 [INFO] [stderr] Downloaded target-lexicon v0.12.12 [INFO] [stderr] Downloaded glib-sys v0.18.1 [INFO] [stderr] Downloaded glib-macros v0.18.2 [INFO] [stderr] Downloaded gio-sys v0.18.1 [INFO] [stderr] Downloaded glib v0.18.2 [INFO] [stderr] Downloaded cairo-rs v0.18.2 [INFO] [stderr] Downloaded rustfft v3.0.1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 291bdbce22c0cc91194d09e2306653de25cb626690abed26d2a5fd8fe6965225 [INFO] running `Command { std: "docker" "start" "-a" "291bdbce22c0cc91194d09e2306653de25cb626690abed26d2a5fd8fe6965225", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "291bdbce22c0cc91194d09e2306653de25cb626690abed26d2a5fd8fe6965225", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "291bdbce22c0cc91194d09e2306653de25cb626690abed26d2a5fd8fe6965225", kill_on_drop: false }` [INFO] [stdout] 291bdbce22c0cc91194d09e2306653de25cb626690abed26d2a5fd8fe6965225 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] ae2eb1006014155bc235d422c52b136d1395f195f84faf8dba4566713abb7bd0 [INFO] running `Command { std: "docker" "start" "-a" "ae2eb1006014155bc235d422c52b136d1395f195f84faf8dba4566713abb7bd0", kill_on_drop: false }` [INFO] [stderr] Compiling serde v1.0.189 [INFO] [stderr] Compiling hashbrown v0.14.2 [INFO] [stderr] Compiling equivalent v1.0.1 [INFO] [stderr] Compiling proc-macro2 v1.0.69 [INFO] [stderr] Compiling winnow v0.5.17 [INFO] [stderr] Compiling target-lexicon v0.12.12 [INFO] [stderr] Compiling heck v0.4.1 [INFO] [stderr] Compiling smallvec v1.8.0 [INFO] [stderr] Compiling syn v1.0.96 [INFO] [stderr] Compiling pkg-config v0.3.25 [INFO] [stderr] Compiling version-compare v0.1.1 [INFO] [stderr] Compiling num-traits v0.2.15 [INFO] [stderr] Compiling futures-core v0.3.21 [INFO] [stderr] Compiling num-integer v0.1.45 [INFO] [stderr] Compiling cfg-expr v0.15.5 [INFO] [stderr] Compiling lock_api v0.4.7 [INFO] [stderr] Compiling indexmap v2.0.2 [INFO] [stderr] Compiling memchr v2.5.0 [INFO] [stderr] Compiling quote v1.0.33 [INFO] [stderr] Compiling crc32fast v1.3.2 [INFO] [stderr] Compiling futures-task v0.3.21 [INFO] [stderr] Checking adler32 v1.2.0 [INFO] [stderr] Compiling futures-util v0.3.21 [INFO] [stderr] Checking miniz_oxide v0.5.3 [INFO] [stderr] Compiling proc-macro-error-attr v1.0.4 [INFO] [stderr] Checking getrandom v0.2.6 [INFO] [stderr] Compiling futures-channel v0.3.21 [INFO] [stderr] Checking slab v0.4.6 [INFO] [stderr] Compiling once_cell v1.18.0 [INFO] [stderr] Checking pin-project-lite v0.2.9 [INFO] [stderr] Checking nanorand v0.7.0 [INFO] [stderr] Checking spin v0.9.3 [INFO] [stderr] Checking deflate v1.0.0 [INFO] [stderr] Compiling syn v2.0.38 [INFO] [stderr] Compiling num-rational v0.4.0 [INFO] [stderr] Compiling num-iter v0.1.43 [INFO] [stderr] Compiling num-complex v0.2.4 [INFO] [stderr] Checking weezl v0.1.6 [INFO] [stderr] Checking futures-sink v0.3.21 [INFO] [stderr] Checking jpeg-decoder v0.2.6 [INFO] [stderr] Checking flate2 v1.0.24 [INFO] [stderr] Checking inflate v0.4.5 [INFO] [stderr] Checking threadpool v1.8.1 [INFO] [stderr] Checking lebe v0.5.1 [INFO] [stderr] Checking color_quant v1.1.0 [INFO] [stderr] Checking bitflags v2.4.1 [INFO] [stderr] Checking bit_field v0.10.1 [INFO] [stderr] Checking gif v0.11.3 [INFO] [stderr] Checking png v0.17.5 [INFO] [stderr] Checking stb_truetype v0.3.1 [INFO] [stderr] Checking tiff v0.7.2 [INFO] [stderr] Compiling toml_datetime v0.6.3 [INFO] [stderr] Compiling serde_spanned v0.6.3 [INFO] [stderr] Checking aho-corasick v0.7.18 [INFO] [stderr] Compiling toml_edit v0.20.2 [INFO] [stderr] Compiling toml_edit v0.19.15 [INFO] [stderr] Checking approx v0.3.2 [INFO] [stderr] Checking ordered-float v1.1.1 [INFO] [stderr] Checking bytemuck v1.9.1 [INFO] [stderr] Checking strength_reduce v0.2.3 [INFO] [stderr] Checking scoped_threadpool v0.1.9 [INFO] [stderr] Checking transpose v0.1.0 [INFO] [stderr] Checking regex-syntax v0.6.26 [INFO] [stderr] Checking rustfft v3.0.1 [INFO] [stderr] Compiling proc-macro-error v1.0.4 [INFO] [stderr] Checking rusttype v0.8.3 [INFO] [stderr] Checking gluten v0.1.0 (https://github.com/carrotflakes/gluten.git?branch=kantera#fa25dc06) [INFO] [stderr] Compiling futures-macro v0.3.21 [INFO] [stderr] Compiling pin-project-internal v1.0.10 [INFO] [stderr] Compiling thiserror-impl v1.0.31 [INFO] [stderr] Compiling proc-macro-crate v1.3.1 [INFO] [stderr] Checking regex v1.5.6 [INFO] [stderr] Compiling toml v0.8.2 [INFO] [stderr] Compiling system-deps v6.1.2 [INFO] [stderr] Checking pin-project v1.0.10 [INFO] [stderr] Compiling glib-macros v0.18.2 [INFO] [stderr] Checking flume v0.10.12 [INFO] [stderr] Checking exr v1.4.2 [INFO] [stderr] Compiling glib-sys v0.18.1 [INFO] [stderr] Compiling gobject-sys v0.18.0 [INFO] [stderr] Compiling gio-sys v0.18.1 [INFO] [stderr] Compiling cairo-sys-rs v0.18.2 [INFO] [stderr] Checking thiserror v1.0.31 [INFO] [stderr] Checking futures-executor v0.3.21 [INFO] [stderr] Checking image v0.24.2 [INFO] [stderr] Checking glib v0.18.2 [INFO] [stderr] Checking cairo-rs v0.18.2 [INFO] [stderr] Checking kantera v0.0.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: private item shadows public glob re-export [INFO] [stdout] --> src/script.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | Package [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: the name `Package` in the type namespace is supposed to be publicly re-exported here [INFO] [stdout] --> src/script.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | data::*, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] note: but the private item here shadows it [INFO] [stdout] --> src/script.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | Package [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] = note: `#[warn(hidden_glob_reexports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Package` is imported redundantly [INFO] [stdout] --> src/script.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | Package [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 13 | data::*, [INFO] [stdout] | ------- the item `Package` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: private item shadows public glob re-export [INFO] [stdout] --> src/script.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | Package [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] note: the name `Package` in the type namespace is supposed to be publicly re-exported here [INFO] [stdout] --> src/script.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | data::*, [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] note: but the private item here shadows it [INFO] [stdout] --> src/script.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | Package [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] = note: `#[warn(hidden_glob_reexports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Package` is imported redundantly [INFO] [stdout] --> src/script.rs:10:5 [INFO] [stdout] | [INFO] [stdout] 10 | Package [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 13 | data::*, [INFO] [stdout] | ------- the item `Package` is already imported here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/path_to_image.rs:23:9 [INFO] [stdout] | [INFO] [stdout] 23 | ctx.fill_preserve(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 23 | let _ = ctx.fill_preserve(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/path_to_image.rs:25:9 [INFO] [stdout] | [INFO] [stdout] 25 | ctx.stroke(); [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 25 | let _ = ctx.stroke(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/path_to_image.rs:23:9 [INFO] [stdout] | [INFO] [stdout] 23 | ctx.fill_preserve(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 23 | let _ = ctx.fill_preserve(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/path_to_image.rs:25:9 [INFO] [stdout] | [INFO] [stdout] 25 | ctx.stroke(); [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 25 | let _ = ctx.stroke(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> examples/image_render.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | ctx.paint(); [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 17 | let _ = ctx.paint(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> examples/image_render.rs:22:9 [INFO] [stdout] | [INFO] [stdout] 22 | ctx.stroke(); [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 22 | let _ = ctx.stroke(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> examples/image_render.rs:26:9 [INFO] [stdout] | [INFO] [stdout] 26 | ctx.stroke(); [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 26 | let _ = ctx.stroke(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> examples/transform.rs:20:9 [INFO] [stdout] | [INFO] [stdout] 20 | ctx.paint(); [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 20 | let _ = ctx.paint(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> examples/transform.rs:25:9 [INFO] [stdout] | [INFO] [stdout] 25 | ctx.stroke(); [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 25 | let _ = ctx.stroke(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> examples/transform.rs:29:9 [INFO] [stdout] | [INFO] [stdout] 29 | ctx.stroke(); [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 29 | let _ = ctx.stroke(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> examples/path_anim.rs:38:13 [INFO] [stdout] | [INFO] [stdout] 38 | ctx.stroke(); [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 38 | let _ = ctx.stroke(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> examples/path_anim.rs:49:21 [INFO] [stdout] | [INFO] [stdout] 49 | ctx.stroke(); [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 49 | let _ = ctx.stroke(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> examples/path_anim.rs:57:13 [INFO] [stdout] | [INFO] [stdout] 57 | ctx.fill(); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 57 | let _ = ctx.fill(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> examples/path_anim.rs:63:13 [INFO] [stdout] | [INFO] [stdout] 63 | ctx.fill(); [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 63 | let _ = ctx.fill(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 4 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 11s [INFO] running `Command { std: "docker" "inspect" "ae2eb1006014155bc235d422c52b136d1395f195f84faf8dba4566713abb7bd0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ae2eb1006014155bc235d422c52b136d1395f195f84faf8dba4566713abb7bd0", kill_on_drop: false }` [INFO] [stdout] ae2eb1006014155bc235d422c52b136d1395f195f84faf8dba4566713abb7bd0