[INFO] fetching crate op-config 0.1.0...
[INFO] checking op-config-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate op-config 0.1.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate op-config 0.1.0 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 op-config 0.1.0
[INFO] finished tweaking crates.io crate op-config 0.1.0
[INFO] tweaked toml for crates.io crate op-config 0.1.0 written to /workspace/builds/worker-3-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]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 205 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding crossterm v0.25.0 (latest: v0.27.0)
[INFO] [stderr]       Adding enum-variants-strings v0.2.3 (latest: v0.3.0)
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[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0)
[INFO] [stderr]       Adding windows-sys v0.48.0 (latest: v0.52.0)
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[INFO] [stderr]       Adding windows_i686_gnu v0.48.5 (latest: v0.52.4)
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[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded project-root v0.2.2
[INFO] [stderr]   Downloaded serde_regex v1.1.0
[INFO] [stderr]   Downloaded op-primitives v0.1.0
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[INFO] [stderr]   Downloaded enum-variants-strings-derive v0.2.4
[INFO] [stderr]   Downloaded either_n v0.2.0
[INFO] [stderr]   Downloaded enum-variants-strings v0.2.3
[INFO] [stderr]   Downloaded temp_testdir v0.2.3
[INFO] [stderr]   Downloaded figment v0.10.15
[INFO] [stderr]   Downloaded pear_codegen v0.2.9
[INFO] [stderr]   Downloaded pear v0.2.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 1085ebaa6a38dd12dfa49f3bc432cef1fcdf9ed62ac040ebc0f9843db2e0fb6f
[INFO] running `Command { std: "docker" "start" "-a" "1085ebaa6a38dd12dfa49f3bc432cef1fcdf9ed62ac040ebc0f9843db2e0fb6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1085ebaa6a38dd12dfa49f3bc432cef1fcdf9ed62ac040ebc0f9843db2e0fb6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1085ebaa6a38dd12dfa49f3bc432cef1fcdf9ed62ac040ebc0f9843db2e0fb6f", kill_on_drop: false }`
[INFO] [stdout] 1085ebaa6a38dd12dfa49f3bc432cef1fcdf9ed62ac040ebc0f9843db2e0fb6f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 7730fc8c7f2e6af5e59fb4b8f8a0018ad1abe2c6e703571701130c700cd3c5fa
[INFO] running `Command { std: "docker" "start" "-a" "7730fc8c7f2e6af5e59fb4b8f8a0018ad1abe2c6e703571701130c700cd3c5fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling hashbrown v0.14.3
[INFO] [stderr]    Compiling winnow v0.5.40
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[INFO] [stderr]     Checking subtle v2.5.0
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[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]     Checking byte-slice-cast v1.2.2
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[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]     Checking base16ct v0.2.0
[INFO] [stderr]     Checking ff v0.13.0
[INFO] [stderr]    Compiling proc-macro2-diagnostics v0.10.1
[INFO] [stderr]     Checking der v0.7.9
[INFO] [stderr]     Checking cpufeatures v0.2.12
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[INFO] [stderr]    Compiling yansi v1.0.1
[INFO] [stderr]    Compiling strum_macros v0.26.2
[INFO] [stderr]    Compiling auto_impl v1.2.0
[INFO] [stderr]    Compiling uncased v0.9.10
[INFO] [stderr]    Compiling either_n v0.2.0
[INFO] [stderr]     Checking tiny-keccak v2.0.2
[INFO] [stderr]     Checking uint v0.9.5
[INFO] [stderr]     Checking signal-hook-mio v0.2.3
[INFO] [stderr]    Compiling eyre v0.6.12
[INFO] [stderr]    Compiling string-cases v0.2.0
[INFO] [stderr]     Checking crossterm v0.25.0
[INFO] [stderr]     Checking aho-corasick v1.1.3
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[INFO] [stderr]     Checking const-hex v1.11.3
[INFO] [stderr]    Compiling indexmap v2.2.6
[INFO] [stderr]     Checking spki v0.7.3
[INFO] [stderr]    Compiling strum_macros v0.25.3
[INFO] [stderr]    Compiling figment v0.10.15
[INFO] [stderr]     Checking dyn-clone v1.0.17
[INFO] [stderr]    Compiling pear_codegen v0.2.9
[INFO] [stderr]     Checking indenter v0.3.3
[INFO] [stderr]     Checking inlinable_string v0.1.15
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[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]     Checking yansi v0.5.1
[INFO] [stderr]     Checking temp_testdir v0.2.3
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[INFO] [stderr]    Compiling toml_edit v0.20.7
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[INFO] [stderr]    Compiling toml_edit v0.21.1
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[INFO] [stderr]     Checking elliptic-curve v0.13.8
[INFO] [stderr]     Checking impl-serde v0.4.0
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[INFO] [stderr]    Compiling proc-macro-crate v3.1.0
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[INFO] [stderr]     Checking typetag v0.2.16
[INFO] [stderr]     Checking serde_regex v1.1.0
[INFO] [stderr]     Checking Inflector v0.11.4
[INFO] [stderr]     Checking k256 v0.13.3
[INFO] [stderr]    Compiling proc-macro-crate v2.0.0
[INFO] [stderr]    Compiling num_enum_derive v0.7.2
[INFO] [stderr]    Compiling proc-macro-crate v1.3.1
[INFO] [stderr]    Compiling impl-trait-for-tuples v0.2.2
[INFO] [stderr]    Compiling parity-scale-codec-derive v3.6.9
[INFO] [stderr]    Compiling rlp-derive v0.1.0
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling open-fastrlp-derive v0.1.1
[INFO] [stderr]    Compiling enum-variants-strings-derive v0.2.4
[INFO] [stderr]    Compiling scale-info-derive v2.11.1
[INFO] [stderr]     Checking toml v0.8.12
[INFO] [stderr]     Checking rlp v0.5.2
[INFO] [stderr]     Checking num_enum v0.7.2
[INFO] [stderr]     Checking enum-variants-strings v0.2.3
[INFO] [stderr]     Checking impl-rlp v0.3.0
[INFO] [stderr]     Checking parity-scale-codec v3.6.9
[INFO] [stderr]     Checking impl-codec v0.6.0
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[INFO] [stderr]     Checking primitive-types v0.12.2
[INFO] [stderr]     Checking ethereum-types v0.14.1
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[INFO] [stderr]     Checking ethabi v18.0.0
[INFO] [stderr]     Checking ethers-core v2.0.14
[INFO] [stderr]     Checking op-primitives v0.1.0
[INFO] [stderr]     Checking op-config v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `wrap` and `strict_select` are never used
[INFO] [stdout]    --> src/stack.rs:529:8
[INFO] [stdout]     |
[INFO] [stdout] 520 | trait ProviderExt: Provider {
[INFO] [stdout]     |       ----------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 529 |     fn wrap(
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 537 |     fn strict_select(
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `wrap` and `strict_select` are never used
[INFO] [stdout]    --> src/stack.rs:529:8
[INFO] [stdout]     |
[INFO] [stdout] 520 | trait ProviderExt: Provider {
[INFO] [stdout]     |       ----------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 529 |     fn wrap(
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 537 |     fn strict_select(
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 35.37s
[INFO] running `Command { std: "docker" "inspect" "7730fc8c7f2e6af5e59fb4b8f8a0018ad1abe2c6e703571701130c700cd3c5fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7730fc8c7f2e6af5e59fb4b8f8a0018ad1abe2c6e703571701130c700cd3c5fa", kill_on_drop: false }`
[INFO] [stdout] 7730fc8c7f2e6af5e59fb4b8f8a0018ad1abe2c6e703571701130c700cd3c5fa
[INFO] checking op-config-0.1.0 against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] extracting crate op-config 0.1.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate op-config 0.1.0 on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate op-config 0.1.0
[INFO] finished tweaking crates.io crate op-config 0.1.0
[INFO] tweaked toml for crates.io crate op-config 0.1.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 205 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding crossterm v0.25.0 (latest: v0.27.0)
[INFO] [stderr]       Adding enum-variants-strings v0.2.3 (latest: v0.3.0)
[INFO] [stderr]       Adding enum-variants-strings-derive v0.2.4 (latest: v0.3.0)
[INFO] [stderr]       Adding generic-array v0.14.7 (latest: v1.0.0)
[INFO] [stderr]       Adding heck v0.4.1 (latest: v0.5.0)
[INFO] [stderr]       Adding inquire v0.6.2 (latest: v0.7.4)
[INFO] [stderr]       Adding linux-raw-sys v0.4.13 (latest: v0.6.4)
[INFO] [stderr]       Adding newline-converter v0.2.2 (latest: v0.3.0)
[INFO] [stderr]       Adding proc-macro-crate v1.3.1 (latest: v3.1.0)
[INFO] [stderr]       Adding proc-macro-crate v2.0.0 (latest: v3.1.0)
[INFO] [stderr]       Adding radium v0.7.0 (latest: v1.1.0)
[INFO] [stderr]       Adding redox_syscall v0.4.1 (latest: v0.5.1)
[INFO] [stderr]       Adding strum v0.25.0 (latest: v0.26.2)
[INFO] [stderr]       Adding strum_macros v0.25.3 (latest: v0.26.2)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding toml_edit v0.19.15 (latest: v0.22.9)
[INFO] [stderr]       Adding toml_edit v0.20.7 (latest: v0.22.9)
[INFO] [stderr]       Adding toml_edit v0.21.1 (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 windows-sys v0.48.0 (latest: v0.52.0)
[INFO] [stderr]       Adding windows-targets v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding winnow v0.5.40 (latest: v0.6.5)
[INFO] [stderr]       Adding wyz v0.5.1 (latest: v0.6.1)
[INFO] [stderr]       Adding yansi v0.5.1 (latest: v1.0.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6c49de16ac2114ef71ceead5fdb0ee9602934585df6cf0a3f97caba1ed242429
[INFO] running `Command { std: "docker" "start" "-a" "6c49de16ac2114ef71ceead5fdb0ee9602934585df6cf0a3f97caba1ed242429", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6c49de16ac2114ef71ceead5fdb0ee9602934585df6cf0a3f97caba1ed242429", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c49de16ac2114ef71ceead5fdb0ee9602934585df6cf0a3f97caba1ed242429", kill_on_drop: false }`
[INFO] [stdout] 6c49de16ac2114ef71ceead5fdb0ee9602934585df6cf0a3f97caba1ed242429
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 900da5441dd4ef980b93bc533c3e96d3baec83db46144bb9bf38bf16c05e1e26
[INFO] running `Command { std: "docker" "start" "-a" "900da5441dd4ef980b93bc533c3e96d3baec83db46144bb9bf38bf16c05e1e26", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.197
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[INFO] [stderr]    Compiling generic-array v0.14.7
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[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]     Checking byte-slice-cast v1.2.2
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking memchr v2.7.2
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]    Compiling signal-hook v0.3.17
[INFO] [stderr]     Checking base16ct v0.2.0
[INFO] [stderr]    Compiling proc-macro2-diagnostics v0.10.1
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[INFO] [stderr]    Compiling scale-info-derive v2.11.1
[INFO] [stderr]    Compiling derive_more v0.99.17
[INFO] [stderr]    Compiling open-fastrlp-derive v0.1.1
[INFO] [stderr]    Compiling enum-variants-strings-derive v0.2.4
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[INFO] [stdout] warning: methods `wrap` and `strict_select` are never used
[INFO] [stdout]    --> src/stack.rs:529:8
[INFO] [stdout]     |
[INFO] [stdout] 520 | trait ProviderExt: Provider {
[INFO] [stdout]     |       ----------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 529 |     fn wrap(
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 537 |     fn strict_select(
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `wrap` and `strict_select` are never used
[INFO] [stdout]    --> src/stack.rs:529:8
[INFO] [stdout]     |
[INFO] [stdout] 520 | trait ProviderExt: Provider {
[INFO] [stdout]     |       ----------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 529 |     fn wrap(
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 537 |     fn strict_select(
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 37.18s
[INFO] running `Command { std: "docker" "inspect" "900da5441dd4ef980b93bc533c3e96d3baec83db46144bb9bf38bf16c05e1e26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "900da5441dd4ef980b93bc533c3e96d3baec83db46144bb9bf38bf16c05e1e26", kill_on_drop: false }`
[INFO] [stdout] 900da5441dd4ef980b93bc533c3e96d3baec83db46144bb9bf38bf16c05e1e26