[INFO] cloning repository https://github.com/Mujhtech/rust_web3
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Mujhtech/rust_web3" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMujhtech%2Frust_web3", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMujhtech%2Frust_web3'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dd93b7a0c734e4440bdcec015ba8cc02c99ce7f3
[INFO] checking Mujhtech/rust_web3/dd93b7a0c734e4440bdcec015ba8cc02c99ce7f3 against master#42f4793e5a514858221b07ac379029d90353913e for pr-148952
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMujhtech%2Frust_web3" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Mujhtech/rust_web3
[INFO] finished tweaking git repo https://github.com/Mujhtech/rust_web3
[INFO] tweaked toml for git repo https://github.com/Mujhtech/rust_web3 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Mujhtech/rust_web3 on toolchain 42f4793e5a514858221b07ac379029d90353913e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+42f4793e5a514858221b07ac379029d90353913e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Mujhtech/rust_web3 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" "+42f4793e5a514858221b07ac379029d90353913e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.52
[INFO] [stderr]   Downloaded web3-async-native-tls v0.4.0
[INFO] [stderr]   Downloaded primitive-types v0.12.1
[INFO] [stderr]   Downloaded coins-core v0.7.0
[INFO] [stderr]   Downloaded ethers-etherscan v2.0.0
[INFO] [stderr]   Downloaded futures v0.3.27
[INFO] [stderr]   Downloaded ethers-providers v2.0.0
[INFO] [stderr]   Downloaded base58check v0.1.0
[INFO] [stderr]   Downloaded ethbloom v0.11.1
[INFO] [stderr]   Downloaded ethers-addressbook v2.0.0
[INFO] [stderr]   Downloaded ethers-contract-abigen v2.0.0
[INFO] [stderr]   Downloaded prettyplease v0.1.24
[INFO] [stderr]   Downloaded parity-scale-codec v3.4.0
[INFO] [stderr]   Downloaded ethers-core v2.0.0
[INFO] [stderr]   Downloaded h2 v0.3.16
[INFO] [stderr]   Downloaded hyper v0.14.25
[INFO] [stderr]   Downloaded secp256k1 v0.21.3
[INFO] [stderr]   Downloaded secp256k1-sys v0.4.2
[INFO] [stderr]   Downloaded ethers-middleware v2.0.0
[INFO] [stderr]   Downloaded ethers-contract v2.0.0
[INFO] [stderr]   Downloaded aes v0.8.2
[INFO] [stderr]   Downloaded bech32 v0.7.3
[INFO] [stderr]   Downloaded futures-util v0.3.27
[INFO] [stderr]   Downloaded const-oid v0.9.2
[INFO] [stderr]   Downloaded auto_impl v1.0.1
[INFO] [stderr]   Downloaded parity-scale-codec-derive v3.1.4
[INFO] [stderr]   Downloaded ethabi v16.0.0
[INFO] [stderr]   Downloaded rustls-pemfile v1.0.2
[INFO] [stderr]   Downloaded futures-macro v0.3.27
[INFO] [stderr]   Downloaded serde-aux v4.1.2
[INFO] [stderr]   Downloaded coins-bip32 v0.7.0
[INFO] [stderr]   Downloaded sha3 v0.10.6
[INFO] [stderr]   Downloaded scale-info-derive v2.3.1
[INFO] [stderr]   Downloaded toml_edit v0.19.6
[INFO] [stderr]   Downloaded scale-info v2.3.1
[INFO] [stderr]   Downloaded futures-channel v0.3.27
[INFO] [stderr]   Downloaded futures-task v0.3.27
[INFO] [stderr]   Downloaded ethers-contract-derive v2.0.0
[INFO] [stderr]   Downloaded enr v0.7.0
[INFO] [stderr]   Downloaded cargo_metadata v0.15.3
[INFO] [stderr]   Downloaded ethers-signers v2.0.0
[INFO] [stderr]   Downloaded winnow v0.3.5
[INFO] [stderr]   Downloaded ethereum-types v0.12.1
[INFO] [stderr]   Downloaded futures-executor v0.3.27
[INFO] [stderr]   Downloaded futures-core v0.3.27
[INFO] [stderr]   Downloaded serde_derive v1.0.155
[INFO] [stderr]   Downloaded web3 v0.18.0
[INFO] [stderr]   Downloaded async-trait v0.1.66
[INFO] [stderr]   Downloaded ethers v2.0.0
[INFO] [stderr]   Downloaded tokio-stream v0.1.12
[INFO] [stderr]   Downloaded futures-io v0.3.27
[INFO] [stderr]   Downloaded thiserror-impl v1.0.39
[INFO] [stderr]   Downloaded thiserror v1.0.39
[INFO] [stderr]   Downloaded serde v1.0.155
[INFO] [stderr]   Downloaded coins-bip39 v0.7.0
[INFO] [stderr]   Downloaded futures-sink v0.3.27
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+42f4793e5a514858221b07ac379029d90353913e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c5d935f62a2e641f2c8265367914a5970131c6e9062f28bf1671518d92b4c6ce
[INFO] running `Command { std: "docker" "start" "-a" "c5d935f62a2e641f2c8265367914a5970131c6e9062f28bf1671518d92b4c6ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c5d935f62a2e641f2c8265367914a5970131c6e9062f28bf1671518d92b4c6ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5d935f62a2e641f2c8265367914a5970131c6e9062f28bf1671518d92b4c6ce", kill_on_drop: false }`
[INFO] [stdout] c5d935f62a2e641f2c8265367914a5970131c6e9062f28bf1671518d92b4c6ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+42f4793e5a514858221b07ac379029d90353913e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9c8b8921d86e1926a4ed18e3d896c267f8889d1ad99bc570849561203ad1fb0f
[INFO] running `Command { std: "docker" "start" "-a" "9c8b8921d86e1926a4ed18e3d896c267f8889d1ad99bc570849561203ad1fb0f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.52
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libc v0.2.140
[INFO] [stderr]    Compiling serde_derive v1.0.155
[INFO] [stderr]    Compiling serde v1.0.155
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]    Compiling indexmap v1.9.2
[INFO] [stderr]    Compiling winnow v0.3.5
[INFO] [stderr]    Compiling toml_datetime v0.6.1
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling cc v1.0.79
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.52/src/lib.rs:92:30
[INFO] [stdout]    |
[INFO] [stdout] 92 |     feature(proc_macro_span, proc_macro_span_shrink)
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "9c8b8921d86e1926a4ed18e3d896c267f8889d1ad99bc570849561203ad1fb0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c8b8921d86e1926a4ed18e3d896c267f8889d1ad99bc570849561203ad1fb0f", kill_on_drop: false }`
[INFO] [stdout] 9c8b8921d86e1926a4ed18e3d896c267f8889d1ad99bc570849561203ad1fb0f