[INFO] fetching crate libR-sys 0.7.1...
[INFO] checking libR-sys-0.7.1 against try#901d6c1c62d7c61e05469e996c297476078ee06b for pr-157082
[INFO] extracting crate libR-sys 0.7.1 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate libR-sys 0.7.1
[INFO] finished tweaking crates.io crate libR-sys 0.7.1
[INFO] tweaked toml for crates.io crate libR-sys 0.7.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate libR-sys 0.7.1 on toolchain 901d6c1c62d7c61e05469e996c297476078ee06b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+901d6c1c62d7c61e05469e996c297476078ee06b" "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" "+901d6c1c62d7c61e05469e996c297476078ee06b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+901d6c1c62d7c61e05469e996c297476078ee06b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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] a98da62a21b511c6cea137faf18b59276dd165fab37e5d91b1979830c7a6205a
[INFO] running `Command { std: "docker" "start" "a98da62a21b511c6cea137faf18b59276dd165fab37e5d91b1979830c7a6205a", 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" "a98da62a21b511c6cea137faf18b59276dd165fab37e5d91b1979830c7a6205a" "/opt/rustwide/cargo-home/bin/cargo" "+901d6c1c62d7c61e05469e996c297476078ee06b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a98da62a21b511c6cea137faf18b59276dd165fab37e5d91b1979830c7a6205a", 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" "a98da62a21b511c6cea137faf18b59276dd165fab37e5d91b1979830c7a6205a" "/opt/rustwide/cargo-home/bin/cargo" "+901d6c1c62d7c61e05469e996c297476078ee06b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling libR-sys v0.7.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> build.rs:72:19
[INFO] [stdout]    |
[INFO] [stdout] 72 |     InvalidEnvVar(&'static str),
[INFO] [stdout]    |     ------------- ^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `EnvVarError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 72 -     InvalidEnvVar(&'static str),
[INFO] [stdout] 72 +     InvalidEnvVar(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> build.rs:73:22
[INFO] [stdout]    |
[INFO] [stdout] 73 |     RInvocationError(io::Error),
[INFO] [stdout]    |     ---------------- ^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `EnvVarError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 73 -     RInvocationError(io::Error),
[INFO] [stdout] 73 +     RInvocationError(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> build.rs:74:20
[INFO] [stdout]    |
[INFO] [stdout] 74 |     InvalidROutput(&'static str),
[INFO] [stdout]    |     -------------- ^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `EnvVarError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 74 -     InvalidROutput(&'static str),
[INFO] [stdout] 74 +     InvalidROutput(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/libR-sys-9eccefca09a0f780/out/bindings.rs:534:18
[INFO] [stdout]     |
[INFO] [stdout] 534 |         unsafe { ::std::mem::transmute(self._bitfield_1.get(16usize, 16u8) as u32) }
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] help: replace this with
[INFO] [stdout]     |
[INFO] [stdout] 534 -         unsafe { ::std::mem::transmute(self._bitfield_1.get(16usize, 16u8) as u32) }
[INFO] [stdout] 534 +         unsafe { u32::cast_signed(self._bitfield_1.get(16usize, 16u8) as u32) }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/libR-sys-9eccefca09a0f780/out/bindings.rs:539:28
[INFO] [stdout]     |
[INFO] [stdout] 539 |             let val: u32 = ::std::mem::transmute(val);
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace this with
[INFO] [stdout]     |
[INFO] [stdout] 539 -             let val: u32 = ::std::mem::transmute(val);
[INFO] [stdout] 539 +             let val: u32 = i32::cast_unsigned(val);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/libR-sys-9eccefca09a0f780/out/bindings.rs:554:47
[INFO] [stdout]     |
[INFO] [stdout] 554 |             let RstartVersion: u32 = unsafe { ::std::mem::transmute(RstartVersion) };
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace this with
[INFO] [stdout]     |
[INFO] [stdout] 554 -             let RstartVersion: u32 = unsafe { ::std::mem::transmute(RstartVersion) };
[INFO] [stdout] 554 +             let RstartVersion: u32 = unsafe { i32::cast_unsigned(RstartVersion) };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/libR-sys-9eccefca09a0f780/out/bindings.rs:534:18
[INFO] [stdout]     |
[INFO] [stdout] 534 |         unsafe { ::std::mem::transmute(self._bitfield_1.get(16usize, 16u8) as u32) }
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] help: replace this with
[INFO] [stdout]     |
[INFO] [stdout] 534 -         unsafe { ::std::mem::transmute(self._bitfield_1.get(16usize, 16u8) as u32) }
[INFO] [stdout] 534 +         unsafe { u32::cast_signed(self._bitfield_1.get(16usize, 16u8) as u32) }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/libR-sys-9eccefca09a0f780/out/bindings.rs:539:28
[INFO] [stdout]     |
[INFO] [stdout] 539 |             let val: u32 = ::std::mem::transmute(val);
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace this with
[INFO] [stdout]     |
[INFO] [stdout] 539 -             let val: u32 = ::std::mem::transmute(val);
[INFO] [stdout] 539 +             let val: u32 = i32::cast_unsigned(val);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]    --> /opt/rustwide/target/debug/build/libR-sys-9eccefca09a0f780/out/bindings.rs:554:47
[INFO] [stdout]     |
[INFO] [stdout] 554 |             let RstartVersion: u32 = unsafe { ::std::mem::transmute(RstartVersion) };
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace this with
[INFO] [stdout]     |
[INFO] [stdout] 554 -             let RstartVersion: u32 = unsafe { ::std::mem::transmute(RstartVersion) };
[INFO] [stdout] 554 +             let RstartVersion: u32 = unsafe { i32::cast_unsigned(RstartVersion) };
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.79s
[INFO] running `Command { std: "docker" "inspect" "a98da62a21b511c6cea137faf18b59276dd165fab37e5d91b1979830c7a6205a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a98da62a21b511c6cea137faf18b59276dd165fab37e5d91b1979830c7a6205a", kill_on_drop: false }`
[INFO] [stdout] a98da62a21b511c6cea137faf18b59276dd165fab37e5d91b1979830c7a6205a
