[INFO] fetching crate ssz_types 0.5.4...
[INFO] checking ssz_types-0.5.4 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate ssz_types 0.5.4 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate ssz_types 0.5.4 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 ssz_types 0.5.4
[INFO] finished tweaking crates.io crate ssz_types 0.5.4
[INFO] tweaked toml for crates.io crate ssz_types 0.5.4 written to /workspace/builds/worker-0-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 }`
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[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 96 packages
[INFO] [stderr]       Adding darling v0.13.4 (latest: v0.20.8)
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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]  Downloading crates ...
[INFO] [stderr]   Downloaded ethereum_hashing v1.0.0-beta.2
[INFO] [stderr]   Downloaded ethereum_serde_utils v0.5.2
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[INFO] [stderr]   Downloaded tree_hash_derive v0.5.2
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 99510145598a97c13065e848c5ece49df08f4f41a4f85cda82b7aa9926a6bde2
[INFO] running `Command { std: "docker" "start" "-a" "99510145598a97c13065e848c5ece49df08f4f41a4f85cda82b7aa9926a6bde2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "99510145598a97c13065e848c5ece49df08f4f41a4f85cda82b7aa9926a6bde2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99510145598a97c13065e848c5ece49df08f4f41a4f85cda82b7aa9926a6bde2", kill_on_drop: false }`
[INFO] [stdout] 99510145598a97c13065e848c5ece49df08f4f41a4f85cda82b7aa9926a6bde2
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ad0de667c8f082de035d7a8bfbaee085537a803736a7c790a27aa3bdc0fc49b
[INFO] running `Command { std: "docker" "start" "-a" "0ad0de667c8f082de035d7a8bfbaee085537a803736a7c790a27aa3bdc0fc49b", kill_on_drop: false }`
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling cc v1.0.90
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[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 crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking fixed-hash v0.8.0
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling darling v0.13.4
[INFO] [stderr]    Compiling tree_hash_derive v0.5.2
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking ethereum_hashing v1.0.0-beta.2
[INFO] [stderr]     Checking impl-serde v0.4.0
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking primitive-types v0.12.2
[INFO] [stderr]     Checking ethbloom v0.13.0
[INFO] [stderr]     Checking ethereum-types v0.14.1
[INFO] [stderr]     Checking tree_hash v0.5.2
[INFO] [stderr]     Checking ethereum_ssz v0.5.3
[INFO] [stderr]     Checking ethereum_serde_utils v0.5.2
[INFO] [stderr]     Checking ssz_types v0.5.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `typenum` is imported redundantly
[INFO] [stdout]   --> src/fixed_vector.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub use typenum;
[INFO] [stdout]    |         ^^^^^^^ the item `typenum` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `typenum` is imported redundantly
[INFO] [stdout]   --> src/variable_list.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub use typenum;
[INFO] [stdout]    |         ^^^^^^^ the item `typenum` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BitVector` is imported redundantly
[INFO] [stdout]    --> src/bitfield.rs:692:9
[INFO] [stdout]     |
[INFO] [stdout] 691 |     use super::*;
[INFO] [stdout]     |         -------- the item `BitVector` is already imported here
[INFO] [stdout] 692 |     use crate::BitVector;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BitList` is imported redundantly
[INFO] [stdout]    --> src/bitfield.rs:897:9
[INFO] [stdout]     |
[INFO] [stdout] 896 |     use super::*;
[INFO] [stdout]     |         -------- the item `BitList` is already imported here
[INFO] [stdout] 897 |     use crate::BitList;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.56s
[INFO] running `Command { std: "docker" "inspect" "0ad0de667c8f082de035d7a8bfbaee085537a803736a7c790a27aa3bdc0fc49b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ad0de667c8f082de035d7a8bfbaee085537a803736a7c790a27aa3bdc0fc49b", kill_on_drop: false }`
[INFO] [stdout] 0ad0de667c8f082de035d7a8bfbaee085537a803736a7c790a27aa3bdc0fc49b
[INFO] checking ssz_types-0.5.4 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate ssz_types 0.5.4 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate ssz_types 0.5.4 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 ssz_types 0.5.4
[INFO] finished tweaking crates.io crate ssz_types 0.5.4
[INFO] tweaked toml for crates.io crate ssz_types 0.5.4 written to /workspace/builds/worker-0-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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] d70377f781649366f7a5673806d83ca5c807ce41ff8cf453a1684b704fc1ceef
[INFO] running `Command { std: "docker" "start" "-a" "d70377f781649366f7a5673806d83ca5c807ce41ff8cf453a1684b704fc1ceef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d70377f781649366f7a5673806d83ca5c807ce41ff8cf453a1684b704fc1ceef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d70377f781649366f7a5673806d83ca5c807ce41ff8cf453a1684b704fc1ceef", kill_on_drop: false }`
[INFO] [stdout] d70377f781649366f7a5673806d83ca5c807ce41ff8cf453a1684b704fc1ceef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] fc7830d25e1b7d57bea534ec7199832ebdfb2dc0a285e5f697ff0964e9f7cd2f
[INFO] running `Command { std: "docker" "start" "-a" "fc7830d25e1b7d57bea534ec7199832ebdfb2dc0a285e5f697ff0964e9f7cd2f", kill_on_drop: false }`
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking bytes v1.6.0
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling cc v1.0.90
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[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 block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking fixed-hash v0.8.0
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling serde_derive v1.0.197
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]    Compiling darling v0.13.4
[INFO] [stderr]    Compiling tree_hash_derive v0.5.2
[INFO] [stderr]     Checking ethereum_hashing v1.0.0-beta.2
[INFO] [stderr]     Checking serde v1.0.197
[INFO] [stderr]     Checking impl-serde v0.4.0
[INFO] [stderr]     Checking serde_json v1.0.115
[INFO] [stderr]     Checking primitive-types v0.12.2
[INFO] [stderr]     Checking ethbloom v0.13.0
[INFO] [stderr]     Checking ethereum-types v0.14.1
[INFO] [stderr]     Checking ethereum_serde_utils v0.5.2
[INFO] [stderr]     Checking tree_hash v0.5.2
[INFO] [stderr]     Checking ethereum_ssz v0.5.3
[INFO] [stderr]     Checking ssz_types v0.5.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `typenum` is imported redundantly
[INFO] [stdout]   --> src/fixed_vector.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub use typenum;
[INFO] [stdout]    |         ^^^^^^^ the item `typenum` is already defined by prelude
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `typenum` is imported redundantly
[INFO] [stdout]   --> src/variable_list.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub use typenum;
[INFO] [stdout]    |         ^^^^^^^ the item `typenum` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BitVector` is imported redundantly
[INFO] [stdout]    --> src/bitfield.rs:692:9
[INFO] [stdout]     |
[INFO] [stdout] 691 |     use super::*;
[INFO] [stdout]     |         -------- the item `BitVector` is already imported here
[INFO] [stdout] 692 |     use crate::BitVector;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `BitList` is imported redundantly
[INFO] [stdout]    --> src/bitfield.rs:897:9
[INFO] [stdout]     |
[INFO] [stdout] 896 |     use super::*;
[INFO] [stdout]     |         -------- the item `BitList` is already imported here
[INFO] [stdout] 897 |     use crate::BitList;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.25s
[INFO] running `Command { std: "docker" "inspect" "fc7830d25e1b7d57bea534ec7199832ebdfb2dc0a285e5f697ff0964e9f7cd2f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc7830d25e1b7d57bea534ec7199832ebdfb2dc0a285e5f697ff0964e9f7cd2f", kill_on_drop: false }`
[INFO] [stdout] fc7830d25e1b7d57bea534ec7199832ebdfb2dc0a285e5f697ff0964e9f7cd2f