[INFO] fetching crate electrum2descriptors 0.4.4...
[INFO] checking electrum2descriptors-0.4.4 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate electrum2descriptors 0.4.4 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate electrum2descriptors 0.4.4 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 electrum2descriptors 0.4.4
[INFO] finished tweaking crates.io crate electrum2descriptors 0.4.4
[INFO] tweaked toml for crates.io crate electrum2descriptors 0.4.4 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate electrum2descriptors 0.4.4 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 crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded secp256k1 v0.24.1
[INFO] [stderr]   Downloaded bdk-macros v0.6.0
[INFO] [stderr]   Downloaded crossbeam-utils v0.8.6
[INFO] [stderr]   Downloaded getrandom v0.2.8
[INFO] [stderr]   Downloaded electrum-client v0.12.0
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.6
[INFO] [stderr]   Downloaded rustls v0.20.7
[INFO] [stderr]   Downloaded tokio v1.15.0
[INFO] [stderr]   Downloaded libc v0.2.137
[INFO] [stderr]   Downloaded rstest v0.12.0
[INFO] [stderr]   Downloaded miniscript v8.0.0
[INFO] [stderr]   Downloaded webpki-roots v0.22.5
[INFO] [stderr]   Downloaded bdk v0.24.0
[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] 21ce0a4ecd96b2e236da91ec871a08acf9bd85b712e901fbcb53623c18a22aa6
[INFO] running `Command { std: "docker" "start" "-a" "21ce0a4ecd96b2e236da91ec871a08acf9bd85b712e901fbcb53623c18a22aa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21ce0a4ecd96b2e236da91ec871a08acf9bd85b712e901fbcb53623c18a22aa6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21ce0a4ecd96b2e236da91ec871a08acf9bd85b712e901fbcb53623c18a22aa6", kill_on_drop: false }`
[INFO] [stdout] 21ce0a4ecd96b2e236da91ec871a08acf9bd85b712e901fbcb53623c18a22aa6
[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] eb09e8547db78270d0bec95ec5122fea5c885ae6f75f7a07bddc5d6f329d09c4
[INFO] running `Command { std: "docker" "start" "-a" "eb09e8547db78270d0bec95ec5122fea5c885ae6f75f7a07bddc5d6f329d09c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking bech32 v0.9.1
[INFO] [stderr]    Compiling serde_json v1.0.78
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]    Compiling crossbeam-utils v0.8.6
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.6
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling rustls v0.20.7
[INFO] [stderr]    Compiling crc32fast v1.3.1
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]     Checking fastrand v1.7.0
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking tokio v1.15.0
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling secp256k1-sys v0.6.1
[INFO] [stderr]    Compiling rstest v0.12.0
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking sled v0.34.7
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking webpki v0.22.0
[INFO] [stderr]     Checking sct v0.7.0
[INFO] [stderr]     Checking webpki-roots v0.22.5
[INFO] [stderr]    Compiling bdk-macros v0.6.0
[INFO] [stderr]     Checking bitcoin_hashes v0.11.0
[INFO] [stderr]     Checking secp256k1 v0.24.1
[INFO] [stderr]     Checking bitcoin v0.29.2
[INFO] [stderr]     Checking electrum-client v0.12.0
[INFO] [stderr]     Checking miniscript v8.0.0
[INFO] [stderr]     Checking electrum2descriptors v0.4.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]  --> src/electrum_wallet_file.rs:5:57
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{fmt, io::BufReader, path::Path, str::FromStr, string::ToString};
[INFO] [stdout]   |                                                         ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `ToString` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking bdk v0.24.0
[INFO] [stdout] warning: the item `FromStr` is imported redundantly
[INFO] [stdout]    --> src/electrum_extended_priv_key.rs:186:9
[INFO] [stdout]     |
[INFO] [stdout] 185 |     use super::*;
[INFO] [stdout]     |         -------- the item `FromStr` is already imported here
[INFO] [stdout] 186 |     use std::str::FromStr;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `FromStr` is imported redundantly
[INFO] [stdout]    --> src/electrum_extended_pub_key.rs:187:9
[INFO] [stdout]     |
[INFO] [stdout] 184 |     use super::*;
[INFO] [stdout]     |         -------- the item `FromStr` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 187 |     use std::str::FromStr;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ToString` is imported redundantly
[INFO] [stdout]  --> src/electrum_wallet_file.rs:5:57
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::{fmt, io::BufReader, path::Path, str::FromStr, string::ToString};
[INFO] [stdout]   |                                                         ^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `ToString` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 23.20s
[INFO] running `Command { std: "docker" "inspect" "eb09e8547db78270d0bec95ec5122fea5c885ae6f75f7a07bddc5d6f329d09c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb09e8547db78270d0bec95ec5122fea5c885ae6f75f7a07bddc5d6f329d09c4", kill_on_drop: false }`
[INFO] [stdout] eb09e8547db78270d0bec95ec5122fea5c885ae6f75f7a07bddc5d6f329d09c4