[INFO] fetching crate nvtt_rs 0.5.0...
[INFO] checking nvtt_rs-0.5.0 against try#ffa4a0215752773248fb0f0a8092f1c3e7907e9e for pr-75585
[INFO] extracting crate nvtt_rs 0.5.0 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate nvtt_rs 0.5.0 on toolchain ffa4a0215752773248fb0f0a8092f1c3e7907e9e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-3/source/Cargo.toml
[INFO] crate crates.io crate nvtt_rs 0.5.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded image v0.23.4
[INFO] [stderr]   Downloaded safe-transmute v0.11.0-rc.2
[INFO] [stderr]   Downloaded maybe-owned v0.3.4
[INFO] [stderr]   Downloaded nvtt_sys v0.3.0
[INFO] running `Command { std: "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" "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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0ddf8beff01fc75c09e93523316dc98fa46dcd8583e53984c94cedefa0c4e4da
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0ddf8beff01fc75c09e93523316dc98fa46dcd8583e53984c94cedefa0c4e4da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ddf8beff01fc75c09e93523316dc98fa46dcd8583e53984c94cedefa0c4e4da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ddf8beff01fc75c09e93523316dc98fa46dcd8583e53984c94cedefa0c4e4da", kill_on_drop: false }`
[INFO] [stdout] 0ddf8beff01fc75c09e93523316dc98fa46dcd8583e53984c94cedefa0c4e4da
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ddabee2511e6598716582f3be4306e9fd6f25c6c52cdb23b6e5364921463f7c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3ddabee2511e6598716582f3be4306e9fd6f25c6c52cdb23b6e5364921463f7c", kill_on_drop: false }`
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling bindgen v0.54.0
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling cc v1.0.54
[INFO] [stderr]    Compiling lazycell v1.2.1
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling nom v5.1.1
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]    Compiling clang-sys v0.29.3
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling nvtt_sys v0.3.0
[INFO] [stderr]     Checking nvtt_rs v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type or module `env`
[INFO] [stdout]  --> examples/compress_dds.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     env::var_os("CARGO_MANIFEST_DIR").map(PathBuf::from).map(|p| p.join("example_data"))
[INFO] [stdout]   |     ^^^ use of undeclared type or module `env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `CompressionOptions`, `CompressionOutput`, `Compressor`, `InputOptions`, `OutputLocation`, `OutputOptions`
[INFO] [stdout]  --> examples/compress_dds.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     CompressionOptions, CompressionOutput, Compressor, InputOptions, OutputLocation, OutputOptions,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^  ^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nvtt_rs`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "3ddabee2511e6598716582f3be4306e9fd6f25c6c52cdb23b6e5364921463f7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ddabee2511e6598716582f3be4306e9fd6f25c6c52cdb23b6e5364921463f7c", kill_on_drop: false }`
[INFO] [stdout] 3ddabee2511e6598716582f3be4306e9fd6f25c6c52cdb23b6e5364921463f7c