[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 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjvns%2Fruby-mem-watcher-demo" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jvns/ruby-mem-watcher-demo on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-13/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" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded elf v0.0.10
[INFO] [stderr]   Downloaded read-process-memory v0.1.2
[INFO] [stderr]   Downloaded clang-sys v0.21.1
[INFO] [stderr]   Downloaded bindgen v0.31.3
[INFO] [stderr]   Downloaded mach v0.0.5
[INFO] [stderr]   Downloaded bcc-sys v0.4.0
[INFO] [stderr]   Downloaded bcc v0.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 3143328d5bc81fee594c5567742644cdb9aa73b06397e18a543a1446f321b8f4
[INFO] running `Command { std: "docker" "start" "-a" "3143328d5bc81fee594c5567742644cdb9aa73b06397e18a543a1446f321b8f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3143328d5bc81fee594c5567742644cdb9aa73b06397e18a543a1446f321b8f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3143328d5bc81fee594c5567742644cdb9aa73b06397e18a543a1446f321b8f4", kill_on_drop: false }`
[INFO] [stdout] 3143328d5bc81fee594c5567742644cdb9aa73b06397e18a543a1446f321b8f4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a06adff9b86cdb30c82acd9466be3d5809e946e52cd335fba2669addc48e87f
[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" "8a06adff9b86cdb30c82acd9466be3d5809e946e52cd335fba2669addc48e87f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.36
[INFO] [stderr]    Compiling libloading v0.4.3
[INFO] [stderr]    Compiling bindgen v0.31.3
[INFO] [stderr]    Compiling bitflags v1.0.1
[INFO] [stderr]    Compiling vec_map v0.8.0
[INFO] [stderr]    Compiling ansi_term v0.10.2
[INFO] [stderr]    Compiling cc v1.0.4
[INFO] [stderr]    Compiling rustc-demangle v0.1.5
[INFO] [stderr]    Compiling byteorder v1.2.1
[INFO] [stderr]    Compiling clang-sys v0.21.1
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]    Compiling textwrap v0.9.0
[INFO] [stderr]    Compiling elf v0.0.10
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]    Compiling log v0.3.9
[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 read-process-memory v0.1.2
[INFO] [stderr]    Compiling clap v2.29.2
[INFO] [stderr]    Compiling aho-corasick v0.6.4
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.16
[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 backtrace v0.3.5
[INFO] [stderr]    Compiling failure v0.1.1
[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]    |                     ^^                             ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_braces)]` on by default
[INFO] [stdout] help: remove these braces
[INFO] [stdout]    |
[INFO] [stdout] 24 -     maps.iter().any({ |map| map.contains_addr(addr) })
[INFO] [stdout] 24 +     maps.iter().any(|map| map.contains_addr(addr))
[INFO] [stdout]    | 
[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 status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "/opt/rustwide/target/debug/deps/count_ruby_allocs-a06968e490ec262c.count_ruby_allocs.91655695-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-a06968e490ec262c.count_ruby_allocs.91655695-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-a06968e490ec262c.count_ruby_allocs.91655695-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-a06968e490ec262c.count_ruby_allocs.91655695-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-a06968e490ec262c.count_ruby_allocs.91655695-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-a06968e490ec262c.count_ruby_allocs.91655695-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-a06968e490ec262c.count_ruby_allocs.91655695-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-a06968e490ec262c.count_ruby_allocs.91655695-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-a06968e490ec262c.count_ruby_allocs.91655695-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-a06968e490ec262c.count_ruby_allocs.91655695-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-a06968e490ec262c.count_ruby_allocs.91655695-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-a06968e490ec262c.count_ruby_allocs.91655695-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-a06968e490ec262c.count_ruby_allocs.91655695-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-a06968e490ec262c.count_ruby_allocs.91655695-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-a06968e490ec262c.count_ruby_allocs.91655695-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-a06968e490ec262c.count_ruby_allocs.91655695-cgu.9.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-a06968e490ec262c.fwj0l5lykc2esv1.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/target/debug/build/backtrace-sys-20724d00ee6e7d62/out/.libs" "-L" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libruby_fork_test-41c0f0d8df0148bb.rlib" "/opt/rustwide/target/debug/deps/libbcc-98ca7db21344b482.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-08aa870810d39887.rlib" "/opt/rustwide/target/debug/deps/libbcc_sys-44bccf39a38ac5fe.rlib" "/opt/rustwide/target/debug/deps/libfailure-4699695d9cb7cca2.rlib" "/opt/rustwide/target/debug/deps/libbacktrace-6bafc5caf2b74ae2.rlib" "/opt/rustwide/target/debug/deps/libbacktrace_sys-23fdf08278b229d7.rlib" "/opt/rustwide/target/debug/deps/librustc_demangle-20a99bf191a986cf.rlib" "/opt/rustwide/target/debug/deps/libelf-e0c90222b2a04616.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-15b62bb4b1f1b2de.rlib" "/opt/rustwide/target/debug/deps/libread_process_memory-945a98610fc95967.rlib" "/opt/rustwide/target/debug/deps/liblibc-d2e4c7879649ac71.rlib" "/opt/rustwide/target/debug/deps/liblog-318029fe00dec551.rlib" "/opt/rustwide/target/debug/deps/liblog-33b4e9505430fd59.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-5b6a9ac0be751eb0.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-8d61b92a0a02f53a.rlib" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-fc45202bb435016b.rlib" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-f2400674c7513725.rlib" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-605c3a7d1a5d300d.rlib" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-3d4fb4efa907e4e8.rlib" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libmemchr-65207f030ab23308.rlib" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-76ca199cb0186109.rlib" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-1e3e01ed4f561dc1.rlib" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-dd8dddcba7c13fee.rlib" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-00b13d31c3420656.rlib" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-e4c8460b81557bd5.rlib" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-600d46e5f0005455.rlib" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-e4a08a2585b62d37.rlib" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-fbc21ec567cb9dc7.rlib" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-10b3fa8e49bd978f.rlib" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-64625b73694ffce7.rlib" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-fb6b78ac543a58ee.rlib" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-1d1f2d1bec6f51b8.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-acf5ff6e9595d982.rlib" "-Wl,-Bdynamic" "-lbcc" "-lutil" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/1.60.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-a06968e490ec262c" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro,-znow" "-nodefaultlibs"
[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` due to 2 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "8a06adff9b86cdb30c82acd9466be3d5809e946e52cd335fba2669addc48e87f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a06adff9b86cdb30c82acd9466be3d5809e946e52cd335fba2669addc48e87f", kill_on_drop: false }`
[INFO] [stdout] 8a06adff9b86cdb30c82acd9466be3d5809e946e52cd335fba2669addc48e87f