[INFO] fetching crate rust-bigint 1.2.0...
[INFO] checking rust-bigint-1.2.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145342-1
[INFO] extracting crate rust-bigint 1.2.0 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate rust-bigint 1.2.0
[INFO] finished tweaking crates.io crate rust-bigint 1.2.0
[INFO] tweaked toml for crates.io crate rust-bigint 1.2.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rust-bigint 1.2.0 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 19 packages to latest compatible versions
[INFO] [stderr]       Adding getrandom v0.2.16 (available: v0.3.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rust-gmp-kzen v0.5.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 63c69116e003a56080e0ed29713800a972890b1dd3b3e35446cd8e9ecd047170
[INFO] running `Command { std: "docker" "start" "-a" "63c69116e003a56080e0ed29713800a972890b1dd3b3e35446cd8e9ecd047170", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "63c69116e003a56080e0ed29713800a972890b1dd3b3e35446cd8e9ecd047170", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "63c69116e003a56080e0ed29713800a972890b1dd3b3e35446cd8e9ecd047170", kill_on_drop: false }`
[INFO] [stdout] 63c69116e003a56080e0ed29713800a972890b1dd3b3e35446cd8e9ecd047170
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3fee3afae2b9850101551cfd9fa4d757f44a8be0bd34cc1fcd41c31ac2981793
[INFO] running `Command { std: "docker" "start" "-a" "3fee3afae2b9850101551cfd9fa4d757f44a8be0bd34cc1fcd41c31ac2981793", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling libc v0.2.175
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling serde_json v1.0.143
[INFO] [stderr]     Checking cfg-if v1.0.3
[INFO] [stderr]     Checking itoa v1.0.15
[INFO] [stderr]     Checking memchr v2.7.5
[INFO] [stderr]     Checking ryu v1.0.20
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]     Checking getrandom v0.2.16
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]     Checking rust-gmp-kzen v0.5.1
[INFO] [stderr]     Checking rust-bigint v1.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/big_gmp.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |         drop(self);
[INFO] [stdout]    |         ^^^^^----^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              argument has type `&mut Mpz`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 21 -         drop(self);
[INFO] [stdout] 21 +         let _ = self;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/big_gmp.rs:29:35
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let bytes: Vec<u8> = value.borrow().into();
[INFO] [stdout]    |                                   ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `Mpz` does not implement `Borrow`, so calling `borrow` on `&Mpz` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout] 29 -         let bytes: Vec<u8> = value.borrow().into();
[INFO] [stdout] 29 +         let bytes: Vec<u8> = value.into();
[INFO] [stdout]    |
[INFO] [stdout] help: if you meant to clone `Mpz`, implement `Clone` for it
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rust-gmp-kzen-0.5.1/src/mpz.rs:110:1
[INFO] [stdout]    |
[INFO] [stdout] 110+ #[derive(Clone)]
[INFO] [stdout] 111| pub struct Mpz {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/big_gmp.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 21 |         drop(self);
[INFO] [stdout]    |         ^^^^^----^
[INFO] [stdout]    |              |
[INFO] [stdout]    |              argument has type `&mut Mpz`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 21 -         drop(self);
[INFO] [stdout] 21 +         let _ = self;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.borrow()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/big_gmp.rs:29:35
[INFO] [stdout]    |
[INFO] [stdout] 29 |         let bytes: Vec<u8> = value.borrow().into();
[INFO] [stdout]    |                                   ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `Mpz` does not implement `Borrow`, so calling `borrow` on `&Mpz` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout] 29 -         let bytes: Vec<u8> = value.borrow().into();
[INFO] [stdout] 29 +         let bytes: Vec<u8> = value.into();
[INFO] [stdout]    |
[INFO] [stdout] help: if you meant to clone `Mpz`, implement `Clone` for it
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rust-gmp-kzen-0.5.1/src/mpz.rs:110:1
[INFO] [stdout]    |
[INFO] [stdout] 110+ #[derive(Clone)]
[INFO] [stdout] 111| pub struct Mpz {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.31s
[INFO] running `Command { std: "docker" "inspect" "3fee3afae2b9850101551cfd9fa4d757f44a8be0bd34cc1fcd41c31ac2981793", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fee3afae2b9850101551cfd9fa4d757f44a8be0bd34cc1fcd41c31ac2981793", kill_on_drop: false }`
[INFO] [stdout] 3fee3afae2b9850101551cfd9fa4d757f44a8be0bd34cc1fcd41c31ac2981793