[INFO] fetching crate let-engine 0.10.0...
[INFO] checking let-engine-0.10.0 against try#3f7e3b175fda7edbf81081bcd9b91b73f2f7993f for pr-156157-1
[INFO] extracting crate let-engine 0.10.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate let-engine 0.10.0
[INFO] finished tweaking crates.io crate let-engine 0.10.0
[INFO] tweaked toml for crates.io crate let-engine 0.10.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate let-engine 0.10.0 on toolchain 3f7e3b175fda7edbf81081bcd9b91b73f2f7993f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3f7e3b175fda7edbf81081bcd9b91b73f2f7993f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate let-engine 0.10.0 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" "+3f7e3b175fda7edbf81081bcd9b91b73f2f7993f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+3f7e3b175fda7edbf81081bcd9b91b73f2f7993f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2bdde4e1f675f90464791533f492cf524f7a8d7c37c5e931462be25577b875c6
[INFO] running `Command { std: "docker" "start" "-a" "2bdde4e1f675f90464791533f492cf524f7a8d7c37c5e931462be25577b875c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2bdde4e1f675f90464791533f492cf524f7a8d7c37c5e931462be25577b875c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bdde4e1f675f90464791533f492cf524f7a8d7c37c5e931462be25577b875c6", kill_on_drop: false }`
[INFO] [stdout] 2bdde4e1f675f90464791533f492cf524f7a8d7c37c5e931462be25577b875c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+3f7e3b175fda7edbf81081bcd9b91b73f2f7993f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5291f7c93e429453b07f96695e5d5bf6d5b114973ed06d5e7f9ff3fd1f1858f3
[INFO] running `Command { std: "docker" "start" "-a" "5291f7c93e429453b07f96695e5d5bf6d5b114973ed06d5e7f9ff3fd1f1858f3", kill_on_drop: false }`
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[INFO] [stdout] warning: field `surface` is never read
[INFO] [stdout]   --> src/draw.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct Draw {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 33 |     pub surface: Arc<Surface>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `surface` is never read
[INFO] [stdout]   --> src/draw.rs:33:9
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct Draw {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 33 |     pub surface: Arc<Surface>,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `array::<impl [T; N]>::map` that must be used
[INFO] [stdout]    --> src/objects/color.rs:332:9
[INFO] [stdout]     |
[INFO] [stdout] 332 |         self.rgba.map(|mut x| x.add_assign(rhs));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 332 |         let _ = self.rgba.map(|mut x| x.add_assign(rhs));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `array::<impl [T; N]>::map` that must be used
[INFO] [stdout]    --> src/objects/color.rs:339:9
[INFO] [stdout]     |
[INFO] [stdout] 339 |         self.rgba.map(|mut x| x.sub_assign(rhs));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 339 |         let _ = self.rgba.map(|mut x| x.sub_assign(rhs));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `array::<impl [T; N]>::map` that must be used
[INFO] [stdout]    --> src/objects/color.rs:346:9
[INFO] [stdout]     |
[INFO] [stdout] 346 |         self.rgba.map(|mut x| x.mul_assign(rhs));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 346 |         let _ = self.rgba.map(|mut x| x.mul_assign(rhs));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `array::<impl [T; N]>::map` that must be used
[INFO] [stdout]    --> src/objects/color.rs:353:9
[INFO] [stdout]     |
[INFO] [stdout] 353 |         self.rgba.map(|mut x| x.div_assign(rhs));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 353 |         let _ = self.rgba.map(|mut x| x.div_assign(rhs));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `array::<impl [T; N]>::map` that must be used
[INFO] [stdout]    --> src/objects/color.rs:332:9
[INFO] [stdout]     |
[INFO] [stdout] 332 |         self.rgba.map(|mut x| x.add_assign(rhs));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 332 |         let _ = self.rgba.map(|mut x| x.add_assign(rhs));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `array::<impl [T; N]>::map` that must be used
[INFO] [stdout]    --> src/objects/color.rs:339:9
[INFO] [stdout]     |
[INFO] [stdout] 339 |         self.rgba.map(|mut x| x.sub_assign(rhs));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 339 |         let _ = self.rgba.map(|mut x| x.sub_assign(rhs));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `array::<impl [T; N]>::map` that must be used
[INFO] [stdout]    --> src/objects/color.rs:346:9
[INFO] [stdout]     |
[INFO] [stdout] 346 |         self.rgba.map(|mut x| x.mul_assign(rhs));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 346 |         let _ = self.rgba.map(|mut x| x.mul_assign(rhs));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `array::<impl [T; N]>::map` that must be used
[INFO] [stdout]    --> src/objects/color.rs:353:9
[INFO] [stdout]     |
[INFO] [stdout] 353 |         self.rgba.map(|mut x| x.div_assign(rhs));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 353 |         let _ = self.rgba.map(|mut x| x.div_assign(rhs));
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: falling back to `f32` as the trait bound `f32: From<f64>` is not satisfied
[INFO] [stdout]    --> examples/pong.rs:134:25
[INFO] [stdout]     |
[INFO] [stdout] 134 |             .line_width(10.0)
[INFO] [stdout]     |                         ^^^^ help: explicitly specify the type as `f32`: `10.0_f32`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #154024 <https://github.com/rust-lang/rust/issues/154024>
[INFO] [stdout]     = note: `#[warn(float_literal_f32_fallback)]` (part of `#[warn(future_incompatible)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 40s
[INFO] running `Command { std: "docker" "inspect" "5291f7c93e429453b07f96695e5d5bf6d5b114973ed06d5e7f9ff3fd1f1858f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5291f7c93e429453b07f96695e5d5bf6d5b114973ed06d5e7f9ff3fd1f1858f3", kill_on_drop: false }`
[INFO] [stdout] 5291f7c93e429453b07f96695e5d5bf6d5b114973ed06d5e7f9ff3fd1f1858f3
