[INFO] fetching crate ex3-crypto 0.15.21...
[INFO] checking ex3-crypto-0.15.21 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate ex3-crypto 0.15.21 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate ex3-crypto 0.15.21 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ex3-crypto 0.15.21
[INFO] finished tweaking crates.io crate ex3-crypto 0.15.21
[INFO] tweaked toml for crates.io crate ex3-crypto 0.15.21 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 54 packages to latest compatible versions
[INFO] [stderr]       Adding base64 v0.21.7 (available: v0.22.1)
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v1.1.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (available: v0.13.2+wasi-0.2.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 786a883a41344128b129371a5aa8a443e4a9b3b9b3c2b2a93dbf1250a3532f3d
[INFO] running `Command { std: "docker" "start" "-a" "786a883a41344128b129371a5aa8a443e4a9b3b9b3c2b2a93dbf1250a3532f3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "786a883a41344128b129371a5aa8a443e4a9b3b9b3c2b2a93dbf1250a3532f3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "786a883a41344128b129371a5aa8a443e4a9b3b9b3c2b2a93dbf1250a3532f3d", kill_on_drop: false }`
[INFO] [stdout] 786a883a41344128b129371a5aa8a443e4a9b3b9b3c2b2a93dbf1250a3532f3d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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 -Dtail_expr_drop_order" "-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a31d894418b4076cb9ac172850b7ac6514efc40fcebd5a00fe1094b0390af245
[INFO] running `Command { std: "docker" "start" "-a" "a31d894418b4076cb9ac172850b7ac6514efc40fcebd5a00fe1094b0390af245", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]     Checking zeroize v1.8.1
[INFO] [stderr]     Checking subtle v2.6.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking const-oid v0.9.6
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]     Checking base16ct v0.2.0
[INFO] [stderr]    Compiling thiserror v1.0.64
[INFO] [stderr]     Checking cpufeatures v0.2.14
[INFO] [stderr]    Compiling anyhow v1.0.89
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking keccak v0.1.5
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking base64 v0.21.7
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]     Checking der v0.7.9
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]     Checking getrandom v0.2.15
[INFO] [stderr]     Checking spki v0.7.3
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking ff v0.13.0
[INFO] [stderr]     Checking group v0.13.0
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking sec1 v0.7.3
[INFO] [stderr]     Checking crypto-bigint v0.5.5
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking signature v2.2.0
[INFO] [stderr]     Checking sha3 v0.10.8
[INFO] [stderr]     Checking rfc6979 v0.4.0
[INFO] [stderr]     Checking bs58 v0.5.1
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling thiserror-impl v1.0.64
[INFO] [stderr]     Checking elliptic-curve v0.13.8
[INFO] [stderr]     Checking zerocopy v0.7.35
[INFO] [stderr]     Checking ecdsa v0.16.9
[INFO] [stderr]     Checking ex3-node-error v0.14.1
[INFO] [stderr]     Checking k256 v0.13.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.20
[INFO] [stderr]     Checking ex3-crypto v0.15.21 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stdout] warning: unused variable: `pub_key`
[INFO] [stdout]    --> src/verify/btc.rs:120:13
[INFO] [stdout]     |
[INFO] [stdout] 120 |         let pub_key = get_pub_key_from_wif(private_wif);
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pub_key`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.97s
[INFO] running `Command { std: "docker" "inspect" "a31d894418b4076cb9ac172850b7ac6514efc40fcebd5a00fe1094b0390af245", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a31d894418b4076cb9ac172850b7ac6514efc40fcebd5a00fe1094b0390af245", kill_on_drop: false }`
[INFO] [stdout] a31d894418b4076cb9ac172850b7ac6514efc40fcebd5a00fe1094b0390af245