[INFO] fetching crate nvtt_rs 0.5.0...
[INFO] testing nvtt_rs-0.5.0 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate nvtt_rs 0.5.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate nvtt_rs 0.5.0 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate nvtt_rs 0.5.0
[INFO] finished tweaking crates.io crate nvtt_rs 0.5.0
[INFO] tweaked toml for crates.io crate nvtt_rs 0.5.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate nvtt_rs 0.5.0 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nvtt_sys v0.3.0
[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=warn" "-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" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2827620fcac01b1892a84ae509e34ef6a0fd9ea195ac8a57d9534570b6c44e44
[INFO] running `"docker" "start" "-a" "2827620fcac01b1892a84ae509e34ef6a0fd9ea195ac8a57d9534570b6c44e44"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling bindgen v0.54.0
[INFO] [stderr]    Compiling clang-sys v0.29.3
[INFO] [stderr]    Compiling nom v5.1.1
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling nvtt_sys v0.3.0
[INFO] [stderr]    Compiling nvtt_rs v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 51.78s
[INFO] running `"docker" "inspect" "2827620fcac01b1892a84ae509e34ef6a0fd9ea195ac8a57d9534570b6c44e44"`
[INFO] running `"docker" "rm" "-f" "2827620fcac01b1892a84ae509e34ef6a0fd9ea195ac8a57d9534570b6c44e44"`
[INFO] [stdout] 2827620fcac01b1892a84ae509e34ef6a0fd9ea195ac8a57d9534570b6c44e44
[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=warn" "-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" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stdout] 266ffcb8d241c1ef965dd9bc0f53d6fffd554d93029df2b8820a8f2811bd7d2e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "266ffcb8d241c1ef965dd9bc0f53d6fffd554d93029df2b8820a8f2811bd7d2e"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling nvtt_rs v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `env`
[INFO] [stderr]  --> examples/compress_dds.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     env::var_os("CARGO_MANIFEST_DIR").map(PathBuf::from).map(|p| p.join("example_data"))
[INFO] [stderr]   |     ^^^ use of undeclared type or module `env`
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `CompressionOptions`, `CompressionOutput`, `Compressor`, `InputOptions`, `OutputLocation`, `OutputOptions`
[INFO] [stderr]  --> examples/compress_dds.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 |     CompressionOptions, CompressionOutput, Compressor, InputOptions, OutputLocation, OutputOptions,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error; 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] error: could not compile `nvtt_rs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "266ffcb8d241c1ef965dd9bc0f53d6fffd554d93029df2b8820a8f2811bd7d2e"`
[INFO] running `"docker" "rm" "-f" "266ffcb8d241c1ef965dd9bc0f53d6fffd554d93029df2b8820a8f2811bd7d2e"`
[INFO] [stdout] 266ffcb8d241c1ef965dd9bc0f53d6fffd554d93029df2b8820a8f2811bd7d2e