[INFO] fetching crate rust-wasm-dev-helper 0.1.2...
[INFO] checking rust-wasm-dev-helper-0.1.2 against beta for pr-78714
[INFO] extracting crate rust-wasm-dev-helper 0.1.2 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate rust-wasm-dev-helper 0.1.2 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust-wasm-dev-helper 0.1.2
[INFO] finished tweaking crates.io crate rust-wasm-dev-helper 0.1.2
[INFO] tweaked toml for crates.io crate rust-wasm-dev-helper 0.1.2 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6eb468f6f3909b125a5fadfe0acfa656f4133cc3ba150fb2f91439b76d5a1c69
[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" "6eb468f6f3909b125a5fadfe0acfa656f4133cc3ba150fb2f91439b76d5a1c69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6eb468f6f3909b125a5fadfe0acfa656f4133cc3ba150fb2f91439b76d5a1c69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6eb468f6f3909b125a5fadfe0acfa656f4133cc3ba150fb2f91439b76d5a1c69", kill_on_drop: false }`
[INFO] [stdout] 6eb468f6f3909b125a5fadfe0acfa656f4133cc3ba150fb2f91439b76d5a1c69
[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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64c8cfba0c4bfdf3f96a4d22db4c53f5e2c05637a41e86d17eacf6e8aac9be6d
[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" "64c8cfba0c4bfdf3f96a4d22db4c53f5e2c05637a41e86d17eacf6e8aac9be6d", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling wasm-bindgen-test-macro v0.2.50
[INFO] [stderr]     Checking wasm-bindgen-futures v0.3.27
[INFO] [stderr]     Checking web-sys v0.3.45
[INFO] [stderr]     Checking wasm-bindgen-test v0.2.50
[INFO] [stderr]     Checking rust-wasm-dev-helper v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]   --> src/log.rs:5:1
[INFO] [stdout]    |
[INFO] [stdout] 5  | / macro_rules! log {
[INFO] [stdout] 6  | |     ( $( $t:tt )* ) => {
[INFO] [stdout] 7  | |         use web_sys::console;
[INFO] [stdout] 8  | |         console::log_1(&format!( $( $t )* ).into());
[INFO] [stdout] 9  | |     }
[INFO] [stdout] 10 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ImageBuffer`, `ImageFormat`, `Rgb`, `png::PngDecoder`
[INFO] [stdout]  --> src/lib.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 | use image::{ImageBuffer, Rgb, png::PngDecoder, ImageFormat, RgbImage};
[INFO] [stdout]   |             ^^^^^^^^^^^  ^^^  ^^^^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Cursor`, `Read`, `SeekFrom`, `Seek`
[INFO] [stdout]  --> src/lib.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::{Cursor, Seek, SeekFrom, Read};
[INFO] [stdout]   |               ^^^^^^  ^^^^  ^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `wasm_bindgen::__rt::IntoJsResult`
[INFO] [stdout]  --> src/lib.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use wasm_bindgen::__rt::IntoJsResult;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]   --> src/log.rs:5:1
[INFO] [stdout]    |
[INFO] [stdout] 5  | / macro_rules! log {
[INFO] [stdout] 6  | |     ( $( $t:tt )* ) => {
[INFO] [stdout] 7  | |         use web_sys::console;
[INFO] [stdout] 8  | |         console::log_1(&format!( $( $t )* ).into());
[INFO] [stdout] 9  | |     }
[INFO] [stdout] 10 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ImageBuffer`, `ImageFormat`, `Rgb`, `png::PngDecoder`
[INFO] [stdout]  --> src/lib.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 | use image::{ImageBuffer, Rgb, png::PngDecoder, ImageFormat, RgbImage};
[INFO] [stdout]   |             ^^^^^^^^^^^  ^^^  ^^^^^^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Cursor`, `Read`, `SeekFrom`, `Seek`
[INFO] [stdout]  --> src/lib.rs:7:15
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::io::{Cursor, Seek, SeekFrom, Read};
[INFO] [stdout]   |               ^^^^^^  ^^^^  ^^^^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `wasm_bindgen::__rt::IntoJsResult`
[INFO] [stdout]  --> src/lib.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use wasm_bindgen::__rt::IntoJsResult;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_panic_hook`
[INFO] [stdout]  --> src/utils.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn set_panic_hook() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_panic_hook`
[INFO] [stdout]  --> src/utils.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn set_panic_hook() {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.03s
[INFO] running `Command { std: "docker" "inspect" "64c8cfba0c4bfdf3f96a4d22db4c53f5e2c05637a41e86d17eacf6e8aac9be6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64c8cfba0c4bfdf3f96a4d22db4c53f5e2c05637a41e86d17eacf6e8aac9be6d", kill_on_drop: false }`
[INFO] [stdout] 64c8cfba0c4bfdf3f96a4d22db4c53f5e2c05637a41e86d17eacf6e8aac9be6d