[INFO] cloning repository https://github.com/ebfull/powersoftau
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ebfull/powersoftau" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Febfull%2Fpowersoftau", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Febfull%2Fpowersoftau'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5429415959175082207fd61c10319e47a6b56e87
[INFO] checking ebfull/powersoftau against try#b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 for pr-78363
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Febfull%2Fpowersoftau" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ebfull/powersoftau on toolchain b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ebfull/powersoftau
[INFO] finished tweaking git repo https://github.com/ebfull/powersoftau
[INFO] tweaked toml for git repo https://github.com/ebfull/powersoftau written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/ebfull/powersoftau already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hex-literal-impl v0.1.1
[INFO] [stderr]   Downloaded proc-macro-hack-impl v0.4.0
[INFO] [stderr]   Downloaded crossbeam v0.3.2
[INFO] [stderr]   Downloaded hex-literal v0.1.1
[INFO] [stderr]   Downloaded proc-macro-hack v0.4.0
[INFO] [stderr]   Downloaded bellman v0.1.0
[INFO] [stderr]   Downloaded blake2 v0.6.1
[INFO] [stderr]   Downloaded pairing v0.14.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5b229c2009591d3585735d0289cc0a6e2cf7ac25b60687a07c20bc715c212e08
[INFO] running `Command { std: "docker" "start" "-a" "5b229c2009591d3585735d0289cc0a6e2cf7ac25b60687a07c20bc715c212e08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b229c2009591d3585735d0289cc0a6e2cf7ac25b60687a07c20bc715c212e08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b229c2009591d3585735d0289cc0a6e2cf7ac25b60687a07c20bc715c212e08", kill_on_drop: false }`
[INFO] [stdout] 5b229c2009591d3585735d0289cc0a6e2cf7ac25b60687a07c20bc715c212e08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da11c1afa768e3bfdab479c8568c6be3b41bdee66e27f0cf65b30543916cd538
[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" "da11c1afa768e3bfdab479c8568c6be3b41bdee66e27f0cf65b30543916cd538", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.40
[INFO] [stderr]    Compiling typenum v1.10.0
[INFO] [stderr]    Compiling proc-macro-hack-impl v0.4.0
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]     Checking futures v0.1.21
[INFO] [stderr]     Checking constant_time_eq v0.1.3
[INFO] [stderr]     Checking byte-tools v0.2.0
[INFO] [stderr]     Checking crossbeam v0.3.2
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]    Compiling proc-macro-hack v0.4.0
[INFO] [stderr]    Compiling hex-literal-impl v0.1.1
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking time v0.1.39
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking hex-literal v0.1.1
[INFO] [stderr]     Checking pairing v0.14.1
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking generic-array v0.8.3
[INFO] [stderr]     Checking digest v0.6.2
[INFO] [stderr]     Checking crypto-mac v0.4.0
[INFO] [stderr]     Checking blake2 v0.6.1
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking bellman v0.1.0
[INFO] [stderr]     Checking powersoftau v0.1.1 (/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 20.26s
[INFO] running `Command { std: "docker" "inspect" "da11c1afa768e3bfdab479c8568c6be3b41bdee66e27f0cf65b30543916cd538", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da11c1afa768e3bfdab479c8568c6be3b41bdee66e27f0cf65b30543916cd538", kill_on_drop: false }`
[INFO] [stdout] da11c1afa768e3bfdab479c8568c6be3b41bdee66e27f0cf65b30543916cd538