[INFO] cloning repository https://github.com/howardwu/semiprimes
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/howardwu/semiprimes" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhowardwu%2Fsemiprimes", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhowardwu%2Fsemiprimes'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9ab52d7ddf4ce8bb074789746e663e99db8a9dcf
[INFO] checking howardwu/semiprimes against master#cced03bfd61a304243a34504618ecec86c17063f for pr-157082
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhowardwu%2Fsemiprimes" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/howardwu/semiprimes
[INFO] finished tweaking git repo https://github.com/howardwu/semiprimes
[INFO] tweaked toml for git repo https://github.com/howardwu/semiprimes written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/howardwu/semiprimes on toolchain cced03bfd61a304243a34504618ecec86c17063f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/howardwu/semiprimes already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3e793bdf10248eb2ddbd6b0faebed8155c11b4589982e2893733958d93e8d540" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] aba491de492ca5fa015b7517ea7f651c3fd8b2b079e19e506805032921118dc8
[INFO] running `Command { std: "docker" "start" "aba491de492ca5fa015b7517ea7f651c3fd8b2b079e19e506805032921118dc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "aba491de492ca5fa015b7517ea7f651c3fd8b2b079e19e506805032921118dc8" "/opt/rustwide/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aba491de492ca5fa015b7517ea7f651c3fd8b2b079e19e506805032921118dc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "aba491de492ca5fa015b7517ea7f651c3fd8b2b079e19e506805032921118dc8" "/opt/rustwide/cargo-home/bin/cargo" "+cced03bfd61a304243a34504618ecec86c17063f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking semiprimes v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated trait `rand::Rand`: replaced by distributions::Standard
[INFO] [stdout]   --> src/biginteger.rs:73:14
[INFO] [stdout]    |
[INFO] [stdout] 73 | impl ::rand::Rand for BigInteger {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `rand::Rand`: replaced by distributions::Standard
[INFO] [stdout]     --> src/field.rs:3692:14
[INFO] [stdout]      |
[INFO] [stdout] 3692 | impl ::rand::Rand for Fp {
[INFO] [stdout]      |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `rand::Rand`: replaced by distributions::Standard
[INFO] [stdout]  --> src/tests.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 |     use rand::Rand;
[INFO] [stdout]   |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]     --> src/field.rs:3679:5
[INFO] [stdout]      |
[INFO] [stdout] 3679 |     #[must_use]
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]      = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[INFO] [stdout]      = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `rand::Rand`: replaced by distributions::Standard
[INFO] [stdout]   --> src/biginteger.rs:73:14
[INFO] [stdout]    |
[INFO] [stdout] 73 | impl ::rand::Rand for BigInteger {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `rand::Rand`: replaced by distributions::Standard
[INFO] [stdout]     --> src/field.rs:3692:14
[INFO] [stdout]      |
[INFO] [stdout] 3692 | impl ::rand::Rand for Fp {
[INFO] [stdout]      |              ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `#[must_use]` attribute cannot be used on trait methods in impl blocks
[INFO] [stdout]     --> src/field.rs:3679:5
[INFO] [stdout]      |
[INFO] [stdout] 3679 |     #[must_use]
[INFO] [stdout]      |     ^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout]      = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]      = help: `#[must_use]` can be applied to data types, foreign functions, functions, inherent methods, provided trait methods, required trait methods, and traits
[INFO] [stdout]      = note: `#[warn(unused_attributes)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `rand::Rand::rand`: replaced by distributions::Standard
[INFO] [stdout]     --> src/field.rs:3696:42
[INFO] [stdout]      |
[INFO] [stdout] 3696 |             let mut tmp = Fp(BigInteger::rand(rng));
[INFO] [stdout]      |                                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `rand::Rand::rand`: replaced by distributions::Standard
[INFO] [stdout]     --> src/field.rs:3696:42
[INFO] [stdout]      |
[INFO] [stdout] 3696 |             let mut tmp = Fp(BigInteger::rand(rng));
[INFO] [stdout]      |                                          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `rand::Rand::rand`: replaced by distributions::Standard
[INFO] [stdout]    --> src/tests.rs:108:41
[INFO] [stdout]     |
[INFO] [stdout] 108 |         let a: BigInteger = BigInteger::rand(&mut rand::thread_rng());
[INFO] [stdout]     |                                         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `rand::Rand::rand`: replaced by distributions::Standard
[INFO] [stdout]    --> src/tests.rs:109:41
[INFO] [stdout]     |
[INFO] [stdout] 109 |         let b: BigInteger = BigInteger::rand(&mut rand::thread_rng());
[INFO] [stdout]     |                                         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `rand::Rand::rand`: replaced by distributions::Standard
[INFO] [stdout]    --> src/tests.rs:116:25
[INFO] [stdout]     |
[INFO] [stdout] 116 |         let a: Fp = Fp::rand(&mut rand::thread_rng());
[INFO] [stdout]     |                         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `rand::Rand::rand`: replaced by distributions::Standard
[INFO] [stdout]    --> src/tests.rs:117:25
[INFO] [stdout]     |
[INFO] [stdout] 117 |         let b: Fp = Fp::rand(&mut rand::thread_rng());
[INFO] [stdout]     |                         ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.80s
[INFO] running `Command { std: "docker" "inspect" "aba491de492ca5fa015b7517ea7f651c3fd8b2b079e19e506805032921118dc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aba491de492ca5fa015b7517ea7f651c3fd8b2b079e19e506805032921118dc8", kill_on_drop: false }`
[INFO] [stdout] aba491de492ca5fa015b7517ea7f651c3fd8b2b079e19e506805032921118dc8