[INFO] fetching crate powersoftau 0.1.0...
[INFO] checking powersoftau-0.1.0 against try#ddfd70ee3c3748e597b32f416b0d15a4f6e37685 for pr-87050
[INFO] extracting crate powersoftau 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate powersoftau 0.1.0 on toolchain ddfd70ee3c3748e597b32f416b0d15a4f6e37685
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate powersoftau 0.1.0
[INFO] finished tweaking crates.io crate powersoftau 0.1.0
[INFO] tweaked toml for crates.io crate powersoftau 0.1.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded digest v0.6.2
[INFO] [stderr]   Downloaded generic-array v0.8.4
[INFO] [stderr]   Downloaded crossbeam v0.3.2
[INFO] [stderr]   Downloaded blake2 v0.6.1
[INFO] [stderr]   Downloaded pairing v0.13.2
[INFO] [stderr]   Downloaded crypto-mac v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b78433023dbaa4861eae7b30bc0842eabda50c6390dbc84e57f063dbb88b9fee
[INFO] running `Command { std: "docker" "start" "-a" "b78433023dbaa4861eae7b30bc0842eabda50c6390dbc84e57f063dbb88b9fee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b78433023dbaa4861eae7b30bc0842eabda50c6390dbc84e57f063dbb88b9fee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b78433023dbaa4861eae7b30bc0842eabda50c6390dbc84e57f063dbb88b9fee", kill_on_drop: false }`
[INFO] [stdout] b78433023dbaa4861eae7b30bc0842eabda50c6390dbc84e57f063dbb88b9fee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+ddfd70ee3c3748e597b32f416b0d15a4f6e37685" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c5e061dfe2424dd79a886717406a6e4c8e41779b25d564d88efda1b2c6b49fbd
[INFO] running `Command { std: "docker" "start" "-a" "c5e061dfe2424dd79a886717406a6e4c8e41779b25d564d88efda1b2c6b49fbd", kill_on_drop: false }`
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking generic-array v0.8.4
[INFO] [stderr]     Checking crypto-mac v0.4.0
[INFO] [stderr]     Checking digest v0.6.2
[INFO] [stderr]     Checking blake2 v0.6.1
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking pairing v0.13.2
[INFO] [stderr]     Checking powersoftau v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/lib.rs:57:34
[INFO] [stdout]    |
[INFO] [stdout] 57 | const TAU_POWERS_LENGTH: usize = (1 << 21);
[INFO] [stdout]    |                                  ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:664:21
[INFO] [stdout]     |
[INFO] [stdout] 44  | use std::sync::{Arc, Mutex};
[INFO] [stdout]     |                 --- the item `Arc` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 664 |     use std::sync::{Arc, Mutex};
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Mutex` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:664:26
[INFO] [stdout]     |
[INFO] [stdout] 44  | use std::sync::{Arc, Mutex};
[INFO] [stdout]     |                      ----- the item `Mutex` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 664 |     use std::sync::{Arc, Mutex};
[INFO] [stdout]     |                          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/lib.rs:57:34
[INFO] [stdout]    |
[INFO] [stdout] 57 | const TAU_POWERS_LENGTH: usize = (1 << 21);
[INFO] [stdout]    |                                  ^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Arc` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:664:21
[INFO] [stdout]     |
[INFO] [stdout] 44  | use std::sync::{Arc, Mutex};
[INFO] [stdout]     |                 --- the item `Arc` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 664 |     use std::sync::{Arc, Mutex};
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Mutex` is imported redundantly
[INFO] [stdout]    --> src/lib.rs:664:26
[INFO] [stdout]     |
[INFO] [stdout] 44  | use std::sync::{Arc, Mutex};
[INFO] [stdout]     |                      ----- the item `Mutex` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 664 |     use std::sync::{Arc, Mutex};
[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 [unoptimized + debuginfo] target(s) in 2.23s
[INFO] running `Command { std: "docker" "inspect" "c5e061dfe2424dd79a886717406a6e4c8e41779b25d564d88efda1b2c6b49fbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5e061dfe2424dd79a886717406a6e4c8e41779b25d564d88efda1b2c6b49fbd", kill_on_drop: false }`
[INFO] [stdout] c5e061dfe2424dd79a886717406a6e4c8e41779b25d564d88efda1b2c6b49fbd