[INFO] fetching crate ethereum-provider 0.2.0...
[INFO] checking ethereum-provider-0.2.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate ethereum-provider 0.2.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate ethereum-provider 0.2.0 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 crates.io crate ethereum-provider 0.2.0
[INFO] finished tweaking crates.io crate ethereum-provider 0.2.0
[INFO] tweaked toml for crates.io crate ethereum-provider 0.2.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 91 packages
[INFO] [stderr]       Adding gloo v0.8.1 (latest: v0.11.0)
[INFO] [stderr]       Adding gloo-console v0.2.3 (latest: v0.3.0)
[INFO] [stderr]       Adding gloo-dialogs v0.1.1 (latest: v0.2.0)
[INFO] [stderr]       Adding gloo-events v0.1.2 (latest: v0.2.0)
[INFO] [stderr]       Adding gloo-file v0.2.3 (latest: v0.3.0)
[INFO] [stderr]       Adding gloo-history v0.1.5 (latest: v0.2.2)
[INFO] [stderr]       Adding gloo-net v0.3.1 (latest: v0.5.0)
[INFO] [stderr]       Adding gloo-render v0.1.1 (latest: v0.2.0)
[INFO] [stderr]       Adding gloo-storage v0.2.2 (latest: v0.3.0)
[INFO] [stderr]       Adding gloo-timers v0.2.6 (latest: v0.3.0)
[INFO] [stderr]       Adding gloo-utils v0.1.7 (latest: v0.2.0)
[INFO] [stderr]       Adding gloo-worker v0.2.1 (latest: v0.5.0)
[INFO] [stderr]       Adding hashbrown v0.12.3 (latest: v0.14.3)
[INFO] [stderr]       Adding http v0.2.12 (latest: v1.1.0)
[INFO] [stderr]       Adding implicit-clone v0.3.9 (latest: v0.4.9)
[INFO] [stderr]       Adding indexmap v1.9.3 (latest: v2.2.6)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding prettyplease v0.1.25 (latest: v0.2.17)
[INFO] [stderr]       Adding serde-wasm-bindgen v0.5.0 (latest: v0.6.5)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding yew v0.20.0 (latest: v0.21.0)
[INFO] [stderr]       Adding yew-macro v0.20.0 (latest: v0.21.0)
[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]  Downloading crates ...
[INFO] [stderr]   Downloaded boolinator v2.4.0
[INFO] [stderr]   Downloaded gloo-utils v0.1.7
[INFO] [stderr]   Downloaded gloo-events v0.1.2
[INFO] [stderr]   Downloaded gloo-storage v0.2.2
[INFO] [stderr]   Downloaded gloo-worker v0.2.1
[INFO] [stderr]   Downloaded pinned v0.1.0
[INFO] [stderr]   Downloaded gloo-console v0.2.3
[INFO] [stderr]   Downloaded gloo-dialogs v0.1.1
[INFO] [stderr]   Downloaded implicit-clone v0.3.9
[INFO] [stderr]   Downloaded gloo-file v0.2.3
[INFO] [stderr]   Downloaded yew-macro v0.20.0
[INFO] [stderr]   Downloaded gloo v0.8.1
[INFO] [stderr]   Downloaded yew v0.20.0
[INFO] [stderr]   Downloaded serde-wasm-bindgen v0.5.0
[INFO] [stderr]   Downloaded gloo-history v0.1.5
[INFO] [stderr]   Downloaded anymap2 v0.13.0
[INFO] [stderr]   Downloaded gloo-net v0.3.1
[INFO] [stderr]   Downloaded gloo-render v0.1.1
[INFO] [stderr]   Downloaded prokio v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 60d194bf821af2e0f0a8964871ff7d794ef7f4380793bf50ca5f8aefe9ecf21d
[INFO] running `Command { std: "docker" "start" "-a" "60d194bf821af2e0f0a8964871ff7d794ef7f4380793bf50ca5f8aefe9ecf21d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "60d194bf821af2e0f0a8964871ff7d794ef7f4380793bf50ca5f8aefe9ecf21d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60d194bf821af2e0f0a8964871ff7d794ef7f4380793bf50ca5f8aefe9ecf21d", kill_on_drop: false }`
[INFO] [stdout] 60d194bf821af2e0f0a8964871ff7d794ef7f4380793bf50ca5f8aefe9ecf21d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 4d8074021b0eafe750408b4198a178559d8df0f964120f3a6d26195f1b1aa960
[INFO] running `Command { std: "docker" "start" "-a" "4d8074021b0eafe750408b4198a178559d8df0f964120f3a6d26195f1b1aa960", kill_on_drop: false }`
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.92
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling bumpalo v3.15.4
[INFO] [stderr]    Compiling wasm-bindgen v0.2.92
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.92
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.92
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.92
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking js-sys v0.3.69
[INFO] [stderr]     Checking serde-wasm-bindgen v0.5.0
[INFO] [stderr]     Checking wasm-bindgen-futures v0.4.42
[INFO] [stderr]     Checking web-sys v0.3.69
[INFO] [stderr]     Checking ethereum-provider v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/provider.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{fmt, vec::Vec};
[INFO] [stdout]   |                ^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Closure` is imported redundantly
[INFO] [stdout]  --> src/provider.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 | use wasm_bindgen::{closure::Closure, prelude::*, JsValue};
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^  ---------- the item `Closure` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `JsValue` is imported redundantly
[INFO] [stdout]  --> src/provider.rs:5:50
[INFO] [stdout]   |
[INFO] [stdout] 5 | use wasm_bindgen::{closure::Closure, prelude::*, JsValue};
[INFO] [stdout]   |                                      ----------  ^^^^^^^
[INFO] [stdout]   |                                      |
[INFO] [stdout]   |                                      the item `JsValue` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Vec` is imported redundantly
[INFO] [stdout]  --> src/provider.rs:4:16
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::{fmt, vec::Vec};
[INFO] [stdout]   |                ^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `Vec` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Closure` is imported redundantly
[INFO] [stdout]  --> src/provider.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 | use wasm_bindgen::{closure::Closure, prelude::*, JsValue};
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^^  ---------- the item `Closure` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `JsValue` is imported redundantly
[INFO] [stdout]  --> src/provider.rs:5:50
[INFO] [stdout]   |
[INFO] [stdout] 5 | use wasm_bindgen::{closure::Closure, prelude::*, JsValue};
[INFO] [stdout]   |                                      ----------  ^^^^^^^
[INFO] [stdout]   |                                      |
[INFO] [stdout]   |                                      the item `JsValue` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.41s
[INFO] running `Command { std: "docker" "inspect" "4d8074021b0eafe750408b4198a178559d8df0f964120f3a6d26195f1b1aa960", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d8074021b0eafe750408b4198a178559d8df0f964120f3a6d26195f1b1aa960", kill_on_drop: false }`
[INFO] [stdout] 4d8074021b0eafe750408b4198a178559d8df0f964120f3a6d26195f1b1aa960