[INFO] fetching crate powersoftau 0.1.0...
[INFO] checking powersoftau-0.1.0 against try#3bb2879ea9e58d65b875f9a98df44f4a43ce2597 for pr-85387
[INFO] extracting crate powersoftau 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate powersoftau 0.1.0 on toolchain 3bb2879ea9e58d65b875f9a98df44f4a43ce2597
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "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-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded blake2 v0.6.1
[INFO] [stderr]   Downloaded pairing v0.13.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 058a54226ff855b1fa475eba39410639c30373bc6d581020f710666a3dcd98d3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "058a54226ff855b1fa475eba39410639c30373bc6d581020f710666a3dcd98d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "058a54226ff855b1fa475eba39410639c30373bc6d581020f710666a3dcd98d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "058a54226ff855b1fa475eba39410639c30373bc6d581020f710666a3dcd98d3", kill_on_drop: false }`
[INFO] [stdout] 058a54226ff855b1fa475eba39410639c30373bc6d581020f710666a3dcd98d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+3bb2879ea9e58d65b875f9a98df44f4a43ce2597" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 619db1e9843e91ca49f326bd14c48207e45b3d237058056657bd629fb9f35028
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "619db1e9843e91ca49f326bd14c48207e45b3d237058056657bd629fb9f35028", kill_on_drop: false }`
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]     Checking crossbeam v0.3.2
[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: 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: 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 4.56s
[INFO] running `Command { std: "docker" "inspect" "619db1e9843e91ca49f326bd14c48207e45b3d237058056657bd629fb9f35028", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "619db1e9843e91ca49f326bd14c48207e45b3d237058056657bd629fb9f35028", kill_on_drop: false }`
[INFO] [stdout] 619db1e9843e91ca49f326bd14c48207e45b3d237058056657bd629fb9f35028