[INFO] updating cached repository https://github.com/jvns/ruby-mem-watcher-demo
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d6470107282b5734c12196787c8f915c35691299
[INFO] testing jvns/ruby-mem-watcher-demo against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjvns%2Fruby-mem-watcher-demo" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jvns/ruby-mem-watcher-demo on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jvns/ruby-mem-watcher-demo
[INFO] finished tweaking git repo https://github.com/jvns/ruby-mem-watcher-demo
[INFO] tweaked toml for git repo https://github.com/jvns/ruby-mem-watcher-demo written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/jvns/ruby-mem-watcher-demo already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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-2019-09-28" "build" "--frozen"`
[INFO] [stdout] b840d2783219ac8cc050342de8aab06eac5fecd858a5f516f05d22cc13236f5d
[INFO] running `"docker" "start" "-a" "b840d2783219ac8cc050342de8aab06eac5fecd858a5f516f05d22cc13236f5d"`
[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/rustwide/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/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/count_ruby_allocs-760890b1b015f00c.count_ruby_allocs.b6zctqwa-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-760890b1b015f00c.count_ruby_allocs.b6zctqwa-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-760890b1b015f00c.count_ruby_allocs.b6zctqwa-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-760890b1b015f00c.count_ruby_allocs.b6zctqwa-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-760890b1b015f00c.count_ruby_allocs.b6zctqwa-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-760890b1b015f00c.count_ruby_allocs.b6zctqwa-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-760890b1b015f00c.count_ruby_allocs.b6zctqwa-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-760890b1b015f00c.count_ruby_allocs.b6zctqwa-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-760890b1b015f00c.count_ruby_allocs.b6zctqwa-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-760890b1b015f00c.count_ruby_allocs.b6zctqwa-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-760890b1b015f00c.count_ruby_allocs.b6zctqwa-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-760890b1b015f00c.count_ruby_allocs.b6zctqwa-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-760890b1b015f00c.count_ruby_allocs.b6zctqwa-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-760890b1b015f00c.count_ruby_allocs.b6zctqwa-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-760890b1b015f00c.count_ruby_allocs.b6zctqwa-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-760890b1b015f00c.count_ruby_allocs.b6zctqwa-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-760890b1b015f00c" "/opt/rustwide/target/debug/deps/count_ruby_allocs-760890b1b015f00c.1q0vbvbsg7efl7o.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/target/debug/build/backtrace-sys-2125ea5d8fda98a6/out/.libs" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libruby_fork_test-b6c378da38e862cc.rlib" "/opt/rustwide/target/debug/deps/libbcc-8d6a24d1908be89f.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-ca9613401f5048f0.rlib" "/opt/rustwide/target/debug/deps/libbcc_sys-e618d5199f7a8607.rlib" "/opt/rustwide/target/debug/deps/libfailure-12c84547135b7eaf.rlib" "/opt/rustwide/target/debug/deps/libbacktrace-3620c9fc8ee37ce8.rlib" "/opt/rustwide/target/debug/deps/libbacktrace_sys-54428d530e17f4c8.rlib" "/opt/rustwide/target/debug/deps/librustc_demangle-70987ed409229bfe.rlib" "/opt/rustwide/target/debug/deps/libelf-61a56be3d7106831.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-b04634ccf21d278a.rlib" "/opt/rustwide/target/debug/deps/libread_process_memory-e81d37c5ca221a7a.rlib" "/opt/rustwide/target/debug/deps/liblibc-fcd1c917c12db8f4.rlib" "/opt/rustwide/target/debug/deps/liblog-3b5872b223579119.rlib" "/opt/rustwide/target/debug/deps/liblog-82b2ed6c3286c86f.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-ce426e5d517a3edf.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-db812c66f862af4c.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e7871a21575d5ff7.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-2f2c581bc0d759e6.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-35731cabc05dc8a0.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-36477394541292db.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-8b706b170c1272d8.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-801dbb3043ccf581.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-a32aa66ce6f72b21.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-d00ea3bfb2bb6c00.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-d2c6ebe88c3e113c.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-df74f62f6bb60621.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-2170473575daeedb.rlib" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-1a08089bbddc4f51.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/beta-2019-09-28-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-f8f562e5472ad5c3.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" "b840d2783219ac8cc050342de8aab06eac5fecd858a5f516f05d22cc13236f5d"`
[INFO] running `"docker" "rm" "-f" "b840d2783219ac8cc050342de8aab06eac5fecd858a5f516f05d22cc13236f5d"`
[INFO] [stdout] b840d2783219ac8cc050342de8aab06eac5fecd858a5f516f05d22cc13236f5d