[INFO] updating cached repository jvns/ruby-mem-watcher-demo
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jvns/ruby-mem-watcher-demo
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jvns/ruby-mem-watcher-demo" "work/ex/beta-1.38-1/sources/1.37.0/gh/jvns/ruby-mem-watcher-demo"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jvns/ruby-mem-watcher-demo'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jvns/ruby-mem-watcher-demo" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jvns/ruby-mem-watcher-demo"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jvns/ruby-mem-watcher-demo'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d6470107282b5734c12196787c8f915c35691299
[INFO] sha for GitHub repo jvns/ruby-mem-watcher-demo: d6470107282b5734c12196787c8f915c35691299
[INFO] validating manifest of jvns/ruby-mem-watcher-demo on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of jvns/ruby-mem-watcher-demo on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing jvns/ruby-mem-watcher-demo
[INFO] finished frobbing jvns/ruby-mem-watcher-demo
[INFO] frobbed toml for jvns/ruby-mem-watcher-demo written to work/ex/beta-1.38-1/sources/1.37.0/gh/jvns/ruby-mem-watcher-demo/Cargo.toml
[INFO] started frobbing jvns/ruby-mem-watcher-demo
[INFO] finished frobbing jvns/ruby-mem-watcher-demo
[INFO] frobbed toml for jvns/ruby-mem-watcher-demo written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jvns/ruby-mem-watcher-demo/Cargo.toml
[INFO] crate jvns/ruby-mem-watcher-demo already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing jvns/ruby-mem-watcher-demo against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jvns/ruby-mem-watcher-demo:/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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] ad01bec0570281bf025411b58c351689cf60a63caff32cc0eef0e5f9cd991c45
[INFO] running `"docker" "start" "-a" "ad01bec0570281bf025411b58c351689cf60a63caff32cc0eef0e5f9cd991c45"`
[INFO] [stderr]    Compiling bindgen v0.31.3
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling which v1.0.3
[INFO] [stderr]    Compiling clang-sys v0.21.1
[INFO] [stderr]    Compiling elf v0.0.10
[INFO] [stderr]    Compiling read-process-memory v0.1.2
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]    Compiling cexpr v0.2.2
[INFO] [stderr]    Compiling bcc-sys v0.4.0
[INFO] [stderr]    Compiling bcc v0.0.1
[INFO] [stderr]    Compiling ruby-fork-test v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right_matches': superseded by `trim_end_matches`
[INFO] [stderr]    --> src/bin/count-ruby-allocs.rs:138:29
[INFO] [stderr]     |
[INFO] [stderr] 138 |             let name = name.trim_right_matches("\0");
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `trim_end_matches`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/bin/count-ruby-allocs.rs:134:21
[INFO] [stderr]     |
[INFO] [stderr] 134 |                 let mut out = f(ptr);
[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] 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/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/count_ruby_allocs-8dd0e015a99154ba.count_ruby_allocs.cn0unocv-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/count_ruby_allocs-8dd0e015a99154ba.count_ruby_allocs.cn0unocv-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/count_ruby_allocs-8dd0e015a99154ba.count_ruby_allocs.cn0unocv-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/count_ruby_allocs-8dd0e015a99154ba.count_ruby_allocs.cn0unocv-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/count_ruby_allocs-8dd0e015a99154ba.count_ruby_allocs.cn0unocv-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/count_ruby_allocs-8dd0e015a99154ba.count_ruby_allocs.cn0unocv-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/count_ruby_allocs-8dd0e015a99154ba.count_ruby_allocs.cn0unocv-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/count_ruby_allocs-8dd0e015a99154ba.count_ruby_allocs.cn0unocv-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/count_ruby_allocs-8dd0e015a99154ba.count_ruby_allocs.cn0unocv-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/count_ruby_allocs-8dd0e015a99154ba.count_ruby_allocs.cn0unocv-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/count_ruby_allocs-8dd0e015a99154ba.count_ruby_allocs.cn0unocv-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/count_ruby_allocs-8dd0e015a99154ba.count_ruby_allocs.cn0unocv-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/count_ruby_allocs-8dd0e015a99154ba.count_ruby_allocs.cn0unocv-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/count_ruby_allocs-8dd0e015a99154ba.count_ruby_allocs.cn0unocv-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/count_ruby_allocs-8dd0e015a99154ba.count_ruby_allocs.cn0unocv-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/count_ruby_allocs-8dd0e015a99154ba.count_ruby_allocs.cn0unocv-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/count_ruby_allocs-8dd0e015a99154ba" "/opt/crater/target/debug/deps/count_ruby_allocs-8dd0e015a99154ba.4ggoy2xfggkxtmc7.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/target/debug/build/backtrace-sys-833122e588450e68/out/.libs" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libruby_fork_test-05bf57eeac4f0942.rlib" "/opt/crater/target/debug/deps/libbcc-58bda91f4a9a7cdf.rlib" "/opt/crater/target/debug/deps/libbyteorder-caff94b28b2a2118.rlib" "/opt/crater/target/debug/deps/libbcc_sys-6306ba8ee2ec2c34.rlib" "/opt/crater/target/debug/deps/libfailure-a6f876b367eb28c5.rlib" "/opt/crater/target/debug/deps/libbacktrace-d3a100690bbcae28.rlib" "/opt/crater/target/debug/deps/libbacktrace_sys-db75fe457afe2c4f.rlib" "/opt/crater/target/debug/deps/librustc_demangle-757bfe34ecbfeb9a.rlib" "/opt/crater/target/debug/deps/libelf-059f7084fb885a4b.rlib" "/opt/crater/target/debug/deps/libbyteorder-28a061140ed2d54c.rlib" "/opt/crater/target/debug/deps/libread_process_memory-d0464ae40dc9535a.rlib" "/opt/crater/target/debug/deps/liblibc-799fedc4a55ea1c4.rlib" "/opt/crater/target/debug/deps/liblog-288d9d1198924990.rlib" "/opt/crater/target/debug/deps/liblog-9f29daffacf088d8.rlib" "/opt/crater/target/debug/deps/libcfg_if-168f8d02dd20eb98.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-1d6d86bd078a28e9.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e9721e46a424e2a9.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-c07193698f282147.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-6da45690f3863086.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-690797036dd27680.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-d3896ccbfd8eda2b.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-7cccc3739e3d7623.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-5e9ba178a513cd29.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-5ca9f83bf63d1f4b.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-bba1c7ef9e950882.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-e23c9de62012deb5.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-9b59dffdcd513d5d.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-17392340ab2e4a97.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-ac21508a81e3f7f3.rlib" "-Wl,-Bdynamic" "-lbcc" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: /usr/bin/ld: cannot find -lbcc
[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 `ruby-fork-test`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "ad01bec0570281bf025411b58c351689cf60a63caff32cc0eef0e5f9cd991c45"`
[INFO] running `"docker" "rm" "-f" "ad01bec0570281bf025411b58c351689cf60a63caff32cc0eef0e5f9cd991c45"`
[INFO] [stdout] ad01bec0570281bf025411b58c351689cf60a63caff32cc0eef0e5f9cd991c45