[INFO] crate os_type 2.2.0 is already in cache
[INFO] checking os_type-2.2.0 against master#bd0bacc694d7d8175804bb6f690cb846bfa4a9ee for pr-71665
[INFO] extracting crate os_type 2.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate os_type 2.2.0 on toolchain bd0bacc694d7d8175804bb6f690cb846bfa4a9ee
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate os_type 2.2.0
[INFO] finished tweaking crates.io crate os_type 2.2.0
[INFO] tweaked toml for crates.io crate os_type 2.2.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+bd0bacc694d7d8175804bb6f690cb846bfa4a9ee" "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] c0bde6fbb21baba88d3bd64fdb2a2968a0a582e91770959c6877e58f018f3cc1
[INFO] running `"docker" "start" "-a" "c0bde6fbb21baba88d3bd64fdb2a2968a0a582e91770959c6877e58f018f3cc1"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking os_type v2.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `super::*`
[INFO] [stderr]   --> src/os_release.rs:60:9
[INFO] [stderr]    |
[INFO] [stderr] 60 |     use super::*;
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `WindowsVer`
[INFO] [stderr]  --> src/windows_ver.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct WindowsVer {
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `retrieve`
[INFO] [stderr]  --> src/windows_ver.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn retrieve() -> Option<WindowsVer> {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse`
[INFO] [stderr]   --> src/windows_ver.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn parse(output: String) -> WindowsVer {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_os_x`
[INFO] [stderr]   --> src/sw_vers.rs:27:8
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub fn is_os_x() -> bool {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 5 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `WindowsVer`
[INFO] [stderr]  --> src/windows_ver.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct WindowsVer {
[INFO] [stderr]   |            ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `retrieve`
[INFO] [stderr]  --> src/windows_ver.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn retrieve() -> Option<WindowsVer> {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse`
[INFO] [stderr]   --> src/windows_ver.rs:17:8
[INFO] [stderr]    |
[INFO] [stderr] 17 | pub fn parse(output: String) -> WindowsVer {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_os_x`
[INFO] [stderr]   --> src/sw_vers.rs:27:8
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub fn is_os_x() -> bool {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_os_x`
[INFO] [stderr]   --> tests/../src/sw_vers.rs:27:8
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub fn is_os_x() -> bool {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `retrieve`
[INFO] [stderr]   --> tests/../src/sw_vers.rs:34:8
[INFO] [stderr]    |
[INFO] [stderr] 34 | pub fn retrieve() -> Option<SwVers> {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `file_exists`
[INFO] [stderr]  --> tests/../src/utils.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn file_exists<P: AsRef<Path>>(path: P) -> bool {
[INFO] [stderr]   |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `retrieve`
[INFO] [stderr]  --> tests/../src/lsb_release.rs:9:8
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub fn retrieve() -> Option<LsbRelease> {
[INFO] [stderr]   |        ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_available`
[INFO] [stderr]   --> tests/../src/lsb_release.rs:18:8
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub fn is_available() -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `file_exists`
[INFO] [stderr]  --> tests/../src/utils.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn file_exists<P: AsRef<Path>>(path: P) -> bool {
[INFO] [stderr]   |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_file`
[INFO] [stderr]   --> tests/../src/rhel_release.rs:12:4
[INFO] [stderr]    |
[INFO] [stderr] 12 | fn read_file(filename: &str) -> Result<String, Error> {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `retrieve`
[INFO] [stderr]   --> tests/../src/rhel_release.rs:19:8
[INFO] [stderr]    |
[INFO] [stderr] 19 | pub fn retrieve() -> Option<RHELRelease> {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `file_exists`
[INFO] [stderr]  --> tests/../src/utils.rs:5:8
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn file_exists<P: AsRef<Path>>(path: P) -> bool {
[INFO] [stderr]   |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.45s
[INFO] running `"docker" "inspect" "c0bde6fbb21baba88d3bd64fdb2a2968a0a582e91770959c6877e58f018f3cc1"`
[INFO] running `"docker" "rm" "-f" "c0bde6fbb21baba88d3bd64fdb2a2968a0a582e91770959c6877e58f018f3cc1"`
[INFO] [stdout] c0bde6fbb21baba88d3bd64fdb2a2968a0a582e91770959c6877e58f018f3cc1