[INFO] cloning repository https://github.com/jvns/ruby-mem-watcher-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jvns/ruby-mem-watcher-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjvns%2Fruby-mem-watcher-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjvns%2Fruby-mem-watcher-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d6470107282b5734c12196787c8f915c35691299
[INFO] testing jvns/ruby-mem-watcher-demo against 1.47.0 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjvns%2Fruby-mem-watcher-demo" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jvns/ruby-mem-watcher-demo on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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 /workspace/builds/worker-1/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 `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a0b9e445bd46314b00eea943a1ee5f8f97f5d74623128e7f47d9c6cd371ff41c
[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" "a0b9e445bd46314b00eea943a1ee5f8f97f5d74623128e7f47d9c6cd371ff41c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a0b9e445bd46314b00eea943a1ee5f8f97f5d74623128e7f47d9c6cd371ff41c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0b9e445bd46314b00eea943a1ee5f8f97f5d74623128e7f47d9c6cd371ff41c", kill_on_drop: false }`
[INFO] [stdout] a0b9e445bd46314b00eea943a1ee5f8f97f5d74623128e7f47d9c6cd371ff41c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d8f7eccd67a7d9c600366f66d0d62c6ab77880f3f58a80940380857aeb592001
[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" "d8f7eccd67a7d9c600366f66d0d62c6ab77880f3f58a80940380857aeb592001", kill_on_drop: false }`
[INFO] [stderr]    Compiling libloading v0.4.3
[INFO] [stderr]    Compiling bindgen v0.31.3
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling atty v0.2.6
[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 backtrace-sys v0.1.16
[INFO] [stderr]    Compiling clap v2.29.2
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]    Compiling backtrace v0.3.5
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling failure v0.1.1
[INFO] [stderr]    Compiling regex v0.2.5
[INFO] [stderr]    Compiling cexpr v0.2.2
[INFO] [stderr]    Compiling env_logger v0.4.3
[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] [stdout] warning: unnecessary braces around method argument
[INFO] [stdout]   --> src/proc_maps.rs:24:21
[INFO] [stdout]    |
[INFO] [stdout] 24 |     maps.iter().any({ |map| map.contains_addr(addr) })
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `core::str::<impl str>::trim_right_matches`: superseded by `trim_end_matches`
[INFO] [stdout]    --> src/bin/count-ruby-allocs.rs:138:29
[INFO] [stdout]     |
[INFO] [stdout] 138 |             let name = name.trim_right_matches("\0");
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated associated function: `trim_end_matches`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/bin/count-ruby-allocs.rs:134:21
[INFO] [stdout]     |
[INFO] [stdout] 134 |                 let mut out = f(ptr);
[INFO] [stdout]     |                     ----^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit code: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-Wl,--eh-frame-hdr" "-L" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/count_ruby_allocs-2a84f96a87400d0a.count_ruby_allocs.743nweck-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-2a84f96a87400d0a.count_ruby_allocs.743nweck-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-2a84f96a87400d0a.count_ruby_allocs.743nweck-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-2a84f96a87400d0a.count_ruby_allocs.743nweck-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-2a84f96a87400d0a.count_ruby_allocs.743nweck-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-2a84f96a87400d0a.count_ruby_allocs.743nweck-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-2a84f96a87400d0a.count_ruby_allocs.743nweck-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-2a84f96a87400d0a.count_ruby_allocs.743nweck-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-2a84f96a87400d0a.count_ruby_allocs.743nweck-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-2a84f96a87400d0a.count_ruby_allocs.743nweck-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-2a84f96a87400d0a.count_ruby_allocs.743nweck-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-2a84f96a87400d0a.count_ruby_allocs.743nweck-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-2a84f96a87400d0a.count_ruby_allocs.743nweck-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-2a84f96a87400d0a.count_ruby_allocs.743nweck-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-2a84f96a87400d0a.count_ruby_allocs.743nweck-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-2a84f96a87400d0a.count_ruby_allocs.743nweck-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-2a84f96a87400d0a" "/opt/rustwide/target/debug/deps/count_ruby_allocs-2a84f96a87400d0a.4a3h4onyu6qune13.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-254cdc781999cfbc/out/.libs" "-L" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libruby_fork_test-c532a8e4520782bf.rlib" "/opt/rustwide/target/debug/deps/libbcc-60516f6955e03427.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-9c035d8966402ac8.rlib" "/opt/rustwide/target/debug/deps/libbcc_sys-d6eaed0bc743c52c.rlib" "/opt/rustwide/target/debug/deps/libfailure-30104707bc43156c.rlib" "/opt/rustwide/target/debug/deps/libbacktrace-19041d2c3623c779.rlib" "/opt/rustwide/target/debug/deps/libbacktrace_sys-0068789add9e29fe.rlib" "/opt/rustwide/target/debug/deps/librustc_demangle-694808abe13a80b2.rlib" "/opt/rustwide/target/debug/deps/libelf-c2577f9b720b3b0a.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-e9641ac4997e4e91.rlib" "/opt/rustwide/target/debug/deps/libread_process_memory-037d4a8cae50e465.rlib" "/opt/rustwide/target/debug/deps/liblibc-310db28551001b6b.rlib" "/opt/rustwide/target/debug/deps/liblog-a7c2325dacb805f7.rlib" "/opt/rustwide/target/debug/deps/liblog-46d224dae499b6ad.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-4ae6418f2ce383af.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-f14aca24435a5414.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-48d342a8b48d1d01.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-14bc0820888c8eb3.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-9cbd9e217bff06bc.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-31826136df98934e.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-075976a117c8fd5d.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-2d5cbedfbf17a011.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-0474372ff08c5319.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-d437c34460d2315a.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-fb61ed1b8cc4de79.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-bf76d1b643bfc9f0.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-a1b53aa7fddcf418.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-28585e57fac45c73.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-64801769bc15ab28.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-541997b56bb98660.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-cdea3c81adab3d12.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-cd9f15a39fb65cbc.rlib" "-Wl,-Bdynamic" "-lbcc" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-ldl" "-lutil"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -lbcc
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ruby-fork-test`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "d8f7eccd67a7d9c600366f66d0d62c6ab77880f3f58a80940380857aeb592001", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8f7eccd67a7d9c600366f66d0d62c6ab77880f3f58a80940380857aeb592001", kill_on_drop: false }`
[INFO] [stdout] d8f7eccd67a7d9c600366f66d0d62c6ab77880f3f58a80940380857aeb592001
