[INFO] crate rtl-sdr 0.1.5 is already in cache
[INFO] extracting crate rtl-sdr 0.1.5 into work/ex/beta-1.37-6/sources/1.36.0/reg/rtl-sdr/0.1.5
[INFO] extracting crate rtl-sdr 0.1.5 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/rtl-sdr/0.1.5
[INFO] validating manifest of rtl-sdr-0.1.5 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rtl-sdr-0.1.5 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rtl-sdr-0.1.5
[INFO] finished frobbing rtl-sdr-0.1.5
[INFO] frobbed toml for rtl-sdr-0.1.5 written to work/ex/beta-1.37-6/sources/1.36.0/reg/rtl-sdr/0.1.5/Cargo.toml
[INFO] started frobbing rtl-sdr-0.1.5
[INFO] finished frobbing rtl-sdr-0.1.5
[INFO] frobbed toml for rtl-sdr-0.1.5 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/rtl-sdr/0.1.5/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing rtl-sdr-0.1.5 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/rtl-sdr/0.1.5:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] f7a875775ef977bea847adbfd8a5f3032bccf58d56b44c4af6fd9bd2a7748919
[INFO] running `"docker" "start" "-a" "f7a875775ef977bea847adbfd8a5f3032bccf58d56b44c4af6fd9bd2a7748919"`
[INFO] [stderr] warning: file found to be present in multiple build targets: /opt/crater/workdir/examples/ex1.rs
[INFO] [stderr]    Compiling rtl-sdr v0.1.5 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/ex1.rs:11:19
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let (m, p, s, mut err) = dev.get_usb_strings();
[INFO] [stderr]    |                   ----^^^
[INFO] [stderr]    |                   |
[INFO] [stderr]    |                   help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/ex1.rs:20:10
[INFO] [stderr]    |
[INFO] [stderr] 20 |     let (mut hw_info, mut err) = dev.get_hw_info();
[INFO] [stderr]    |          ----^^^^^^^
[INFO] [stderr]    |          |
[INFO] [stderr]    |          help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] error: linking with `cc` failed: exit code: 1
[INFO] [stderr]   |
[INFO] [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/ex1-ea73b49d66caece0.ex1.4ckuddkg-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/ex1-ea73b49d66caece0.ex1.4ckuddkg-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/ex1-ea73b49d66caece0.ex1.4ckuddkg-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/ex1-ea73b49d66caece0.ex1.4ckuddkg-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/ex1-ea73b49d66caece0.ex1.4ckuddkg-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/ex1-ea73b49d66caece0.ex1.4ckuddkg-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/ex1-ea73b49d66caece0.ex1.4ckuddkg-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/ex1-ea73b49d66caece0.ex1.4ckuddkg-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/ex1-ea73b49d66caece0.ex1.4ckuddkg-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/ex1-ea73b49d66caece0.ex1.4ckuddkg-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/ex1-ea73b49d66caece0.ex1.4ckuddkg-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/ex1-ea73b49d66caece0.ex1.4ckuddkg-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/ex1-ea73b49d66caece0.ex1.4ckuddkg-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/ex1-ea73b49d66caece0.ex1.4ckuddkg-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/ex1-ea73b49d66caece0.ex1.4ckuddkg-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/ex1-ea73b49d66caece0.ex1.4ckuddkg-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/ex1-ea73b49d66caece0" "/opt/crater/target/debug/deps/ex1-ea73b49d66caece0.5bt12m0p6qvg87tw.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/librtlsdr-3f03c92c84b6929b.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-9895e8982b0a79e7.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-57306b8ed3378a0e.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-54463ae5adae3649.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-d99667b199a9875a.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-51f4300e102199f5.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-b3ccf1f7737a6a91.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-157c37a3ceb78853.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-505bcee45aafb736.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-c29abd529ba4452b.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-895383a3232f6572.rlib" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-5594cb4f559bc761.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/1.36.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-38e90baf978bc428.rlib" "-Wl,-Bdynamic" "-lrtlsdr" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /usr/bin/ld: cannot find -lrtlsdr
[INFO] [stderr]           collect2: error: ld returned 1 exit status
[INFO] [stderr]           
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rtl-sdr`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "f7a875775ef977bea847adbfd8a5f3032bccf58d56b44c4af6fd9bd2a7748919"`
[INFO] running `"docker" "rm" "-f" "f7a875775ef977bea847adbfd8a5f3032bccf58d56b44c4af6fd9bd2a7748919"`
[INFO] [stdout] f7a875775ef977bea847adbfd8a5f3032bccf58d56b44c4af6fd9bd2a7748919