[INFO] fetching crate ethers-abi 18.0.0...
[INFO] checking ethers-abi-18.0.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate ethers-abi 18.0.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate ethers-abi 18.0.0 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 ethers-abi 18.0.0
[INFO] finished tweaking crates.io crate ethers-abi 18.0.0
[INFO] tweaked toml for crates.io crate ethers-abi 18.0.0 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 81 packages
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding hex-literal v0.3.4 (latest: v0.4.1)
[INFO] [stderr]       Adding proc-macro-crate v1.3.1 (latest: v3.1.0)
[INFO] [stderr]       Adding proc-macro-crate v2.0.2 (latest: v3.1.0)
[INFO] [stderr]       Adding radium v0.7.0 (latest: v1.1.0)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding toml_datetime v0.6.3 (latest: v0.6.5)
[INFO] [stderr]       Adding toml_edit v0.19.15 (latest: v0.22.9)
[INFO] [stderr]       Adding toml_edit v0.20.2 (latest: v0.22.9)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding winnow v0.5.40 (latest: v0.6.5)
[INFO] [stderr]       Adding wyz v0.5.1 (latest: v0.6.1)
[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 ethers-ethereum-types v0.14.1
[INFO] [stderr]   Downloaded ethers-primitive-types-rs v0.12.1
[INFO] [stderr]   Downloaded ethers-fixed-hash v0.8.0
[INFO] [stderr]   Downloaded ethers-uint-rs v0.9.5
[INFO] [stderr]   Downloaded impl-rlp v0.3.0
[INFO] [stderr]   Downloaded ethbloom v0.13.0
[INFO] [stderr]   Downloaded rlp v0.5.2
[INFO] [stderr]   Downloaded ethers-impl-rlp v0.3.0
[INFO] [stderr]   Downloaded ethers-impl-codec v0.6.0
[INFO] [stderr]   Downloaded ethers-impl-serde v0.4.0
[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] 57b114fe2ba4bfb3e1c66369e1fb953e40c853dfd816dc60781c1285d79f3b87
[INFO] running `Command { std: "docker" "start" "-a" "57b114fe2ba4bfb3e1c66369e1fb953e40c853dfd816dc60781c1285d79f3b87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57b114fe2ba4bfb3e1c66369e1fb953e40c853dfd816dc60781c1285d79f3b87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57b114fe2ba4bfb3e1c66369e1fb953e40c853dfd816dc60781c1285d79f3b87", kill_on_drop: false }`
[INFO] [stdout] 57b114fe2ba4bfb3e1c66369e1fb953e40c853dfd816dc60781c1285d79f3b87
[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] 56b4a1a6ca39b929cb20d1e1d9d357f24dcfec0b5d5043d85c187a5939da3be3
[INFO] running `Command { std: "docker" "start" "-a" "56b4a1a6ca39b929cb20d1e1d9d357f24dcfec0b5d5043d85c187a5939da3be3", kill_on_drop: false }`
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha3 v0.10.8
[INFO] [stderr]     Checking ethers-uint-rs v0.9.5
[INFO] [stderr]     Checking uint v0.9.5
[INFO] [stderr]     Checking rlp v0.5.2
[INFO] [stderr]     Checking ethers-impl-rlp v0.3.0
[INFO] [stderr]     Checking impl-rlp v0.3.0
[INFO] [stderr]     Checking fixed-hash v0.8.0
[INFO] [stderr]     Checking ethers-fixed-hash v0.8.0
[INFO] [stderr]     Checking ethers-impl-serde v0.4.0
[INFO] [stderr]     Checking impl-serde v0.4.0
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking ethbloom v0.13.0
[INFO] [stderr]     Checking ethers-primitive-types-rs v0.12.1
[INFO] [stderr]     Checking ethers-ethereum-types v0.14.1
[INFO] [stderr]     Checking ethers-abi v18.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]    --> src/contract.rs:262:6
[INFO] [stdout]     |
[INFO] [stdout] 262 |     use core::iter::FromIterator;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `FromIterator` 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]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.78s
[INFO] running `Command { std: "docker" "inspect" "56b4a1a6ca39b929cb20d1e1d9d357f24dcfec0b5d5043d85c187a5939da3be3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56b4a1a6ca39b929cb20d1e1d9d357f24dcfec0b5d5043d85c187a5939da3be3", kill_on_drop: false }`
[INFO] [stdout] 56b4a1a6ca39b929cb20d1e1d9d357f24dcfec0b5d5043d85c187a5939da3be3
[INFO] checking ethers-abi-18.0.0 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate ethers-abi 18.0.0 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate ethers-abi 18.0.0 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ethers-abi 18.0.0
[INFO] finished tweaking crates.io crate ethers-abi 18.0.0
[INFO] tweaked toml for crates.io crate ethers-abi 18.0.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 59db151ef2ac2f5eba5a40aa90e30a41277b12db19f31424add0288956ea2d49
[INFO] running `Command { std: "docker" "start" "-a" "59db151ef2ac2f5eba5a40aa90e30a41277b12db19f31424add0288956ea2d49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59db151ef2ac2f5eba5a40aa90e30a41277b12db19f31424add0288956ea2d49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59db151ef2ac2f5eba5a40aa90e30a41277b12db19f31424add0288956ea2d49", kill_on_drop: false }`
[INFO] [stdout] 59db151ef2ac2f5eba5a40aa90e30a41277b12db19f31424add0288956ea2d49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 454824452ce43cbfbfed848c76d20d247d9b0aa38e7fda67ae0b8ae4514de657
[INFO] running `Command { std: "docker" "start" "-a" "454824452ce43cbfbfed848c76d20d247d9b0aa38e7fda67ae0b8ae4514de657", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking sha3 v0.10.8
[INFO] [stderr]     Checking ethers-uint-rs v0.9.5
[INFO] [stderr]     Checking uint v0.9.5
[INFO] [stderr]     Checking rlp v0.5.2
[INFO] [stderr]     Checking impl-rlp v0.3.0
[INFO] [stderr]     Checking ethers-impl-rlp v0.3.0
[INFO] [stderr]     Checking fixed-hash v0.8.0
[INFO] [stderr]     Checking ethers-fixed-hash v0.8.0
[INFO] [stderr]     Checking impl-serde v0.4.0
[INFO] [stderr]     Checking ethers-impl-serde v0.4.0
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking ethers-primitive-types-rs v0.12.1
[INFO] [stderr]     Checking ethbloom v0.13.0
[INFO] [stderr]     Checking ethers-ethereum-types v0.14.1
[INFO] [stderr]     Checking ethers-abi v18.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `FromIterator` is imported redundantly
[INFO] [stdout]    --> src/contract.rs:262:6
[INFO] [stdout]     |
[INFO] [stdout] 262 |     use core::iter::FromIterator;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]     |
[INFO] [stdout]     = note: the item `FromIterator` 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]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.14s
[INFO] running `Command { std: "docker" "inspect" "454824452ce43cbfbfed848c76d20d247d9b0aa38e7fda67ae0b8ae4514de657", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "454824452ce43cbfbfed848c76d20d247d9b0aa38e7fda67ae0b8ae4514de657", kill_on_drop: false }`
[INFO] [stdout] 454824452ce43cbfbfed848c76d20d247d9b0aa38e7fda67ae0b8ae4514de657