[INFO] updating cached repository https://github.com/jacobrosenthal/rust-ffi-bench
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e85828968a52a6415b19ea2b37f404f2f25ea8f2
[INFO] checking jacobrosenthal/rust-ffi-bench against try#e4dba30b9b475d8750370c4dfb49b6541990904d for pr-71393
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjacobrosenthal%2Frust-ffi-bench" "/workspace/builds/worker-3/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jacobrosenthal/rust-ffi-bench on toolchain e4dba30b9b475d8750370c4dfb49b6541990904d
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jacobrosenthal/rust-ffi-bench
[INFO] finished tweaking git repo https://github.com/jacobrosenthal/rust-ffi-bench
[INFO] tweaked toml for git repo https://github.com/jacobrosenthal/rust-ffi-bench written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/jacobrosenthal/rust-ffi-bench already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e4dba30b9b475d8750370c4dfb49b6541990904d" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 22ce5806d5f0d9a375c5accffb1ae5648a07811bafcdc73c6de4a50fcfa0853b
[INFO] running `"docker" "start" "-a" "22ce5806d5f0d9a375c5accffb1ae5648a07811bafcdc73c6de4a50fcfa0853b"`
[INFO] [stderr]     Checking encoding_index_tests v0.1.5 (https://github.com/lifthrasiir/rust-encoding#eb3d3c30)
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking encoding-types v0.2.0 (https://github.com/lifthrasiir/rust-encoding#eb3d3c30)
[INFO] [stderr]     Checking byteorder v1.2.7
[INFO] [stderr]     Checking utf8-ranges v1.0.2
[INFO] [stderr]     Checking regex-syntax v0.6.3
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking encoding-index-singlebyte v1.20160120.0 (https://github.com/lifthrasiir/rust-encoding#eb3d3c30)
[INFO] [stderr]     Checking encoding-index-simpchinese v1.20160120.0 (https://github.com/lifthrasiir/rust-encoding#eb3d3c30)
[INFO] [stderr]     Checking encoding-index-tradchinese v1.20141219.6 (https://github.com/lifthrasiir/rust-encoding#eb3d3c30)
[INFO] [stderr]     Checking encoding-index-korean v1.20141219.6 (https://github.com/lifthrasiir/rust-encoding#eb3d3c30)
[INFO] [stderr]     Checking encoding-index-japanese v1.20141219.6 (https://github.com/lifthrasiir/rust-encoding#eb3d3c30)
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]     Checking encoding v0.3.0-dev (https://github.com/lifthrasiir/rust-encoding#eb3d3c30)
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking ffi-bench v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/flt.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |         ((value as u32) << shift)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `atoi_via_bytes`
[INFO] [stderr]  --> src/flt.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn atoi_via_bytes(chars: [u8; 4]) -> u32 {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `shifted_atoi_via_fold`
[INFO] [stderr]   --> src/flt.rs:25:8
[INFO] [stderr]    |
[INFO] [stderr] 25 | pub fn shifted_atoi_via_fold(chars: Vec<u8>) -> u32 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `shifted_atoi_via_map`
[INFO] [stderr]   --> src/flt.rs:37:8
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub fn shifted_atoi_via_map(chars: Vec<u8>) -> u32 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `shifted_atoi_via_loop`
[INFO] [stderr]   --> src/flt.rs:49:8
[INFO] [stderr]    |
[INFO] [stderr] 49 | pub fn shifted_atoi_via_loop(chars: Vec<u8>) -> u32 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `compose_f32`
[INFO] [stderr]   --> src/flt.rs:60:8
[INFO] [stderr]    |
[INFO] [stderr] 60 | pub fn compose_f32(exponent: f32, mantissa: f32) -> f32 {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `clone_into_array`
[INFO] [stderr]   --> src/flt.rs:65:4
[INFO] [stderr]    |
[INFO] [stderr] 65 | fn clone_into_array<A, T>(slice: &[T]) -> A
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `getu16_stable`
[INFO] [stderr]   --> src/flt.rs:75:8
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub fn getu16_stable(my_array: [u8; 4]) -> u16 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `getu16`
[INFO] [stderr]   --> src/flt.rs:79:8
[INFO] [stderr]    |
[INFO] [stderr] 79 | pub fn getu16(my_array: [u8; 4]) -> u16 {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `getu32`
[INFO] [stderr]   --> src/flt.rs:85:8
[INFO] [stderr]    |
[INFO] [stderr] 85 | pub fn getu32(my_array: [u8; 4]) -> u32 {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `string_from_iso_bytes`
[INFO] [stderr]  --> src/string.rs:7:4
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn string_from_iso_bytes(buffer: &[u8]) -> std::string::String {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `bytes_from_from_iso_string`
[INFO] [stderr]   --> src/string.rs:11:4
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn bytes_from_from_iso_string(keyword: &str) -> Vec<u8> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cstring_from_ptr`
[INFO] [stderr]   --> src/string.rs:15:4
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn cstring_from_ptr(buffer: &[i8]) -> &str {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `cstring_from_bytes`
[INFO] [stderr]   --> src/string.rs:22:4
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn cstring_from_bytes(buffer: &[u8]) -> &str {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `string_from_utf8`
[INFO] [stderr]   --> src/string.rs:27:4
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn string_from_utf8(buffer: &[u8]) -> &str {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `uniform_paths` has been stable since 1.32.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(uniform_paths)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `slice_patterns` has been stable since 1.42.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(slice_patterns)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]  --> src/flt.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(slice_patterns)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate-level attribute should be in the root module
[INFO] [stderr]  --> src/flt.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(slice_patterns)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]  --> src/flt.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(test)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: crate-level attribute should be in the root module
[INFO] [stderr]  --> src/flt.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(test)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 21 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Checking regex v1.0.6
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/flt.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |         ((value as u32) << shift)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around function argument
[INFO] [stderr]   --> src/string.rs:82:27
[INFO] [stderr]    |
[INFO] [stderr] 82 |                 black_box({ cstring_from_ptr(&tcxc) });
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around function argument
[INFO] [stderr]    --> src/string.rs:100:27
[INFO] [stderr]     |
[INFO] [stderr] 100 |                 black_box({ cstring_from_bytes(&tcxc) });
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary braces around function argument
[INFO] [stderr]    --> src/string.rs:119:27
[INFO] [stderr]     |
[INFO] [stderr] 119 |                 black_box({ string_from_utf8(&tcxc) });
[INFO] [stderr]     |                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around block return value
[INFO] [stderr]   --> src/flt.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 |         ((value as u32) << shift)
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `slice_patterns` has been stable since 1.42.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> examples/generate.rs:2:12
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(slice_patterns)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `int_to_from_bytes` has been stable since 1.32.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> examples/generate.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(int_to_from_bytes)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `slice_patterns` has been stable since 1.42.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/flt.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(slice_patterns)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `atoi_via_bytes`
[INFO] [stderr]  --> src/flt.rs:7:8
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub fn atoi_via_bytes(chars: [u8; 4]) -> u32 {
[INFO] [stderr]   |        ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `getu32`
[INFO] [stderr]   --> src/flt.rs:85:8
[INFO] [stderr]    |
[INFO] [stderr] 85 | pub fn getu32(my_array: [u8; 4]) -> u32 {
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `uniform_paths` has been stable since 1.32.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(uniform_paths)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `slice_patterns` has been stable since 1.42.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:3:12
[INFO] [stderr]   |
[INFO] [stderr] 3 | #![feature(slice_patterns)]
[INFO] [stderr]   |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]  --> src/flt.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(slice_patterns)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_attributes)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate-level attribute should be in the root module
[INFO] [stderr]  --> src/flt.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(slice_patterns)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused attribute
[INFO] [stderr]  --> src/flt.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(test)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: crate-level attribute should be in the root module
[INFO] [stderr]  --> src/flt.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(test)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 12 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.20s
[INFO] running `"docker" "inspect" "22ce5806d5f0d9a375c5accffb1ae5648a07811bafcdc73c6de4a50fcfa0853b"`
[INFO] running `"docker" "rm" "-f" "22ce5806d5f0d9a375c5accffb1ae5648a07811bafcdc73c6de4a50fcfa0853b"`
[INFO] [stdout] 22ce5806d5f0d9a375c5accffb1ae5648a07811bafcdc73c6de4a50fcfa0853b