[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 try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjvns%2Fruby-mem-watcher-demo" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jvns/ruby-mem-watcher-demo on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "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-5/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" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded which v1.0.3
[INFO] [stderr]   Downloaded cexpr v0.2.2
[INFO] [stderr]   Downloaded elf v0.0.10
[INFO] [stderr]   Downloaded regex v0.2.5
[INFO] [stderr]   Downloaded bindgen v0.31.3
[INFO] [stderr]   Downloaded bcc v0.0.1
[INFO] [stderr]   Downloaded clang-sys v0.21.1
[INFO] [stderr]   Downloaded bcc-sys v0.4.0
[INFO] [stderr]   Downloaded mach v0.0.5
[INFO] [stderr]   Downloaded read-process-memory v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 684dd981b96785c009771b76b54c6db0bb25fb37f758b25d53e631eae7318b8d
[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" "684dd981b96785c009771b76b54c6db0bb25fb37f758b25d53e631eae7318b8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "684dd981b96785c009771b76b54c6db0bb25fb37f758b25d53e631eae7318b8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "684dd981b96785c009771b76b54c6db0bb25fb37f758b25d53e631eae7318b8d", kill_on_drop: false }`
[INFO] [stdout] 684dd981b96785c009771b76b54c6db0bb25fb37f758b25d53e631eae7318b8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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=forbid" "-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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9b04bd9ae3695fc2ec6c0a9daab8711bc6535225f932173a79ca9d7b3d92636a
[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" "9b04bd9ae3695fc2ec6c0a9daab8711bc6535225f932173a79ca9d7b3d92636a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.36
[INFO] [stderr]    Compiling lazy_static v1.0.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling libloading v0.4.3
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling regex-syntax v0.4.2
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling bindgen v0.31.3
[INFO] [stderr]    Compiling byteorder v0.5.3
[INFO] [stderr]    Compiling clang-sys v0.21.1
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling elf v0.0.10
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling syn v0.11.11
[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 backtrace-sys v0.1.16
[INFO] [stderr]    Compiling read-process-memory v0.1.2
[INFO] [stderr]    Compiling backtrace v0.3.5
[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 regex v0.2.5
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]    Compiling cexpr v0.2.2
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]    Compiling env_logger v0.4.3
[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]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 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 status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-Wl,--as-needed" "-L" "/opt/rustwide/rustup-home/toolchains/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/count_ruby_allocs-6bee3757e4de6e81.count_ruby_allocs.a0ajosiz-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-6bee3757e4de6e81.count_ruby_allocs.a0ajosiz-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-6bee3757e4de6e81.count_ruby_allocs.a0ajosiz-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-6bee3757e4de6e81.count_ruby_allocs.a0ajosiz-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-6bee3757e4de6e81.count_ruby_allocs.a0ajosiz-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-6bee3757e4de6e81.count_ruby_allocs.a0ajosiz-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-6bee3757e4de6e81.count_ruby_allocs.a0ajosiz-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-6bee3757e4de6e81.count_ruby_allocs.a0ajosiz-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-6bee3757e4de6e81.count_ruby_allocs.a0ajosiz-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-6bee3757e4de6e81.count_ruby_allocs.a0ajosiz-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-6bee3757e4de6e81.count_ruby_allocs.a0ajosiz-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-6bee3757e4de6e81.count_ruby_allocs.a0ajosiz-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-6bee3757e4de6e81.count_ruby_allocs.a0ajosiz-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-6bee3757e4de6e81.count_ruby_allocs.a0ajosiz-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-6bee3757e4de6e81.count_ruby_allocs.a0ajosiz-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-6bee3757e4de6e81.count_ruby_allocs.a0ajosiz-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/count_ruby_allocs-6bee3757e4de6e81" "/opt/rustwide/target/debug/deps/count_ruby_allocs-6bee3757e4de6e81.3ngbphw644d32ovp.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-637336be3ade4130/out/.libs" "-L" "/opt/rustwide/rustup-home/toolchains/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libruby_fork_test-a2b2b2fc318b3297.rlib" "/opt/rustwide/target/debug/deps/libbcc-98099e5858fe3a9d.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-b2b2c0f721e6dbfa.rlib" "/opt/rustwide/target/debug/deps/libbcc_sys-c76a5aaee7be09f4.rlib" "/opt/rustwide/target/debug/deps/libfailure-53150523b5d7aef3.rlib" "/opt/rustwide/target/debug/deps/libbacktrace-15bde64797b844ac.rlib" "/opt/rustwide/target/debug/deps/libbacktrace_sys-ff01f1ba8e941ae7.rlib" "/opt/rustwide/target/debug/deps/librustc_demangle-8d6c6ce39d729296.rlib" "/opt/rustwide/target/debug/deps/libelf-8c827a8b6732d963.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-5dda2aa30a5871e6.rlib" "/opt/rustwide/target/debug/deps/libread_process_memory-3a1476155cd708ac.rlib" "/opt/rustwide/target/debug/deps/liblibc-79167d57efd4c1e0.rlib" "/opt/rustwide/target/debug/deps/liblog-18dc1a72ee6e2c45.rlib" "/opt/rustwide/target/debug/deps/liblog-74a07593ab29c107.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-279fec5414362cdd.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-21256c14e4504640.rlib" "/opt/rustwide/rustup-home/toolchains/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-986e7fea4474d4d2.rlib" "/opt/rustwide/rustup-home/toolchains/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-91d85f45babdb06e.rlib" "/opt/rustwide/rustup-home/toolchains/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-756509c31813f9a6.rlib" "/opt/rustwide/rustup-home/toolchains/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-5c2ef587e740c0cc.rlib" "/opt/rustwide/rustup-home/toolchains/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-ad8f9371d31db1b3.rlib" "/opt/rustwide/rustup-home/toolchains/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-402820fb3b4d3dd8.rlib" "/opt/rustwide/rustup-home/toolchains/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-5e8e903f07dc8747.rlib" "/opt/rustwide/rustup-home/toolchains/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-7ab9ae5080c07187.rlib" "/opt/rustwide/rustup-home/toolchains/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-c8e8d47c6bf14de2.rlib" "/opt/rustwide/rustup-home/toolchains/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-5a02dbb58abd015a.rlib" "/opt/rustwide/rustup-home/toolchains/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-cedc8fec61444895.rlib" "/opt/rustwide/rustup-home/toolchains/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-a1c96351c52bc56a.rlib" "/opt/rustwide/rustup-home/toolchains/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-e41c6d24baeb2249.rlib" "/opt/rustwide/rustup-home/toolchains/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-62493b241881590c.rlib" "/opt/rustwide/rustup-home/toolchains/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-a1fd7734706d5518.rlib" "/opt/rustwide/rustup-home/toolchains/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-c8ded1707ad10767.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-1eec8756baa5bc24.rlib" "-Wl,-Bdynamic" "-lbcc" "-lutil" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc"
[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" "9b04bd9ae3695fc2ec6c0a9daab8711bc6535225f932173a79ca9d7b3d92636a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b04bd9ae3695fc2ec6c0a9daab8711bc6535225f932173a79ca9d7b3d92636a", kill_on_drop: false }`
[INFO] [stdout] 9b04bd9ae3695fc2ec6c0a9daab8711bc6535225f932173a79ca9d7b3d92636a