[INFO] fetching crate ark-serialize 0.4.2...
[INFO] checking ark-serialize-0.4.2 against master#35936c4839dd272646394779d151e060d0f6b3ac for pr-122960-1
[INFO] extracting crate ark-serialize 0.4.2 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate ark-serialize 0.4.2 on toolchain 35936c4839dd272646394779d151e060d0f6b3ac
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+35936c4839dd272646394779d151e060d0f6b3ac" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ark-serialize 0.4.2
[INFO] finished tweaking crates.io crate ark-serialize 0.4.2
[INFO] tweaked toml for crates.io crate ark-serialize 0.4.2 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" "+35936c4839dd272646394779d151e060d0f6b3ac" "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" "+35936c4839dd272646394779d151e060d0f6b3ac" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded keccak v0.1.5
[INFO] [stderr]   Downloaded digest v0.10.7
[INFO] [stderr]   Downloaded cpufeatures v0.2.12
[INFO] [stderr]   Downloaded generic-array v0.14.7
[INFO] [stderr]   Downloaded crypto-common v0.1.6
[INFO] [stderr]   Downloaded subtle v2.5.0
[INFO] [stderr]   Downloaded typenum v1.17.0
[INFO] [stderr]   Downloaded ark-serialize-derive v0.4.2
[INFO] [stderr]   Downloaded block-buffer v0.10.4
[INFO] [stderr]   Downloaded version_check v0.9.4
[INFO] [stderr]   Downloaded ark-ff-macros v0.4.2
[INFO] [stderr]   Downloaded ark-ff-asm v0.4.2
[INFO] [stderr]   Downloaded ark-ec v0.4.2
[INFO] [stderr]   Downloaded derivative v2.2.0
[INFO] [stderr]   Downloaded ark-poly v0.4.2
[INFO] [stderr]   Downloaded syn v1.0.109
[INFO] [stderr]   Downloaded zerocopy-derive v0.7.32
[INFO] [stderr]   Downloaded zerocopy v0.7.32
[INFO] [stderr]   Downloaded sha3 v0.10.8
[INFO] [stderr]   Downloaded ahash v0.8.11
[INFO] [stderr]   Downloaded hashbrown v0.13.2
[INFO] [stderr]   Downloaded ark-ff v0.4.2
[INFO] [stderr]   Downloaded blake2 v0.10.6
[INFO] [stderr]   Downloaded num-bigint v0.4.4
[INFO] [stderr]   Downloaded semver v1.0.22
[INFO] [stderr]   Downloaded num-integer v0.1.46
[INFO] [stderr]   Downloaded sha2 v0.10.8
[INFO] [stderr]   Downloaded ark-serialize v0.4.2
[INFO] [stderr]   Downloaded paste v1.0.14
[INFO] [stderr]   Downloaded ark-std v0.4.0
[INFO] [stderr]   Downloaded ark-test-curves v0.4.2
[INFO] [stderr]   Downloaded rustc_version v0.4.0
[INFO] [stderr]   Downloaded zeroize_derive v1.4.2
[INFO] [stderr]   Downloaded zeroize v1.7.0
[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" "+35936c4839dd272646394779d151e060d0f6b3ac" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a608e8a4277561376551d54eea9205b518be111f08aca78c5f54603bbdfe1df9
[INFO] running `Command { std: "docker" "start" "-a" "a608e8a4277561376551d54eea9205b518be111f08aca78c5f54603bbdfe1df9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a608e8a4277561376551d54eea9205b518be111f08aca78c5f54603bbdfe1df9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a608e8a4277561376551d54eea9205b518be111f08aca78c5f54603bbdfe1df9", kill_on_drop: false }`
[INFO] [stdout] a608e8a4277561376551d54eea9205b518be111f08aca78c5f54603bbdfe1df9
[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" "+35936c4839dd272646394779d151e060d0f6b3ac" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b8f79bfcd5c4f0861a221a3b20dbdfe70157834bdeab5fc45d61c66c19047d3
[INFO] running `Command { std: "docker" "start" "-a" "1b8f79bfcd5c4f0861a221a3b20dbdfe70157834bdeab5fc45d61c66c19047d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling autocfg v1.2.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking subtle v2.5.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling paste v1.0.14
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking either v1.10.0
[INFO] [stderr]     Checking zerocopy v0.7.32
[INFO] [stderr]     Checking once_cell v1.19.0
[INFO] [stderr]     Checking keccak v0.1.5
[INFO] [stderr]     Checking cpufeatures v0.2.12
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling ahash v0.8.11
[INFO] [stderr]    Compiling num-traits v0.2.18
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking hashbrown v0.13.2
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.55
[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]    Compiling num-integer v0.1.46
[INFO] [stderr]     Checking ark-std v0.4.0
[INFO] [stderr]     Checking blake2 v0.10.6
[INFO] [stderr]     Checking sha2 v0.10.8
[INFO] [stderr]     Checking sha3 v0.10.8
[INFO] [stderr]     Checking ark-serialize v0.4.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Read` is imported redundantly
[INFO] [stdout]   --> src/impls.rs:4:10
[INFO] [stdout]    |
[INFO] [stdout] 4  |     io::{Read, Write},
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 | use crate::*;
[INFO] [stdout]    |     -------- the item `Read` is already imported here
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 3  |     unused,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    = note: `#[warn(unused_imports)]` implied by `#[warn(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]   --> src/impls.rs:4:16
[INFO] [stdout]    |
[INFO] [stdout] 4  |     io::{Read, Write},
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 | use crate::*;
[INFO] [stdout]    |     -------- the item `Write` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling ark-serialize-derive v0.4.2
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling ark-ff-asm v0.4.2
[INFO] [stderr]    Compiling ark-ff-macros v0.4.2
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]     Checking ark-serialize v0.4.2
[INFO] [stderr]     Checking zeroize v1.7.0
[INFO] [stderr]     Checking ark-ff v0.4.2
[INFO] [stderr]     Checking ark-poly v0.4.2
[INFO] [stderr]     Checking ark-ec v0.4.2
[INFO] [stderr]     Checking ark-test-curves v0.4.2
[INFO] [stdout] warning: the item `Read` is imported redundantly
[INFO] [stdout]   --> src/impls.rs:4:10
[INFO] [stdout]    |
[INFO] [stdout] 4  |     io::{Read, Write},
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 | use crate::*;
[INFO] [stdout]    |     -------- the item `Read` is already imported here
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:3:5
[INFO] [stdout]    |
[INFO] [stdout] 3  |     unused,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    = note: `#[warn(unused_imports)]` implied by `#[warn(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]   --> src/impls.rs:4:16
[INFO] [stdout]    |
[INFO] [stdout] 4  |     io::{Read, Write},
[INFO] [stdout]    |                ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 12 | use crate::*;
[INFO] [stdout]    |     -------- the item `Write` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.04s
[INFO] running `Command { std: "docker" "inspect" "1b8f79bfcd5c4f0861a221a3b20dbdfe70157834bdeab5fc45d61c66c19047d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b8f79bfcd5c4f0861a221a3b20dbdfe70157834bdeab5fc45d61c66c19047d3", kill_on_drop: false }`
[INFO] [stdout] 1b8f79bfcd5c4f0861a221a3b20dbdfe70157834bdeab5fc45d61c66c19047d3