[INFO] fetching crate synthzip 0.1.0...
[INFO] checking synthzip-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] extracting crate synthzip 0.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate synthzip 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 synthzip 0.1.0
[INFO] finished tweaking crates.io crate synthzip 0.1.0
[INFO] tweaked toml for crates.io crate synthzip 0.1.0 written to /workspace/builds/worker-1-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 16 packages
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] b701b97cea380138fec2d1a208938148a1a851fd56e758393784a5c06fab76da
[INFO] running `Command { std: "docker" "start" "-a" "b701b97cea380138fec2d1a208938148a1a851fd56e758393784a5c06fab76da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b701b97cea380138fec2d1a208938148a1a851fd56e758393784a5c06fab76da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b701b97cea380138fec2d1a208938148a1a851fd56e758393784a5c06fab76da", kill_on_drop: false }`
[INFO] [stdout] b701b97cea380138fec2d1a208938148a1a851fd56e758393784a5c06fab76da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 20e1e801be57338c6f8878712360c0e8b33131b9da3e6d040d41280129add627
[INFO] running `Command { std: "docker" "start" "-a" "20e1e801be57338c6f8878712360c0e8b33131b9da3e6d040d41280129add627", kill_on_drop: false }`
[INFO] [stderr]    Compiling crc32fast v1.4.0
[INFO] [stderr]     Checking miniz_oxide v0.7.2
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]     Checking flate2 v1.0.28
[INFO] [stderr]    Compiling thiserror-impl v1.0.58
[INFO] [stderr]     Checking thiserror v1.0.58
[INFO] [stderr]     Checking synthzip v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `Read` is imported redundantly
[INFO] [stdout]  --> src/central_directory.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::prelude::*;
[INFO] [stdout]   |     ----------------- the item `Read` is already imported here
[INFO] [stdout] 3 | use std::io::{Read, Seek, SeekFrom, Write};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Read` is imported redundantly
[INFO] [stdout]  --> src/central_directory.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::prelude::*;
[INFO] [stdout]   |     ----------------- the item `Read` is already imported here
[INFO] [stdout] 3 | use std::io::{Read, Seek, SeekFrom, Write};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Seek` is imported redundantly
[INFO] [stdout]  --> src/central_directory.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::prelude::*;
[INFO] [stdout]   |     ----------------- the item `Seek` is already imported here
[INFO] [stdout] 3 | use std::io::{Read, Seek, SeekFrom, Write};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]  --> src/central_directory.rs:3:37
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::prelude::*;
[INFO] [stdout]   |     ----------------- the item `Write` is already imported here
[INFO] [stdout] 3 | use std::io::{Read, Seek, SeekFrom, Write};
[INFO] [stdout]   |                                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Seek` is imported redundantly
[INFO] [stdout]  --> src/central_directory.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::prelude::*;
[INFO] [stdout]   |     ----------------- the item `Seek` is already imported here
[INFO] [stdout] 3 | use std::io::{Read, Seek, SeekFrom, Write};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Write` is imported redundantly
[INFO] [stdout]  --> src/central_directory.rs:3:37
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::prelude::*;
[INFO] [stdout]   |     ----------------- the item `Write` is already imported here
[INFO] [stdout] 3 | use std::io::{Read, Seek, SeekFrom, Write};
[INFO] [stdout]   |                                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.09s
[INFO] running `Command { std: "docker" "inspect" "20e1e801be57338c6f8878712360c0e8b33131b9da3e6d040d41280129add627", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20e1e801be57338c6f8878712360c0e8b33131b9da3e6d040d41280129add627", kill_on_drop: false }`
[INFO] [stdout] 20e1e801be57338c6f8878712360c0e8b33131b9da3e6d040d41280129add627