[INFO] cloning repository https://github.com/the8472/ffcnt
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/the8472/ffcnt" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthe8472%2Fffcnt", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthe8472%2Fffcnt'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4107cc4c9233f3e2bc086d0124cd225e4cd33642
[INFO] testing the8472/ffcnt against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fthe8472%2Fffcnt" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/the8472/ffcnt on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/the8472/ffcnt
[INFO] finished tweaking git repo https://github.com/the8472/ffcnt
[INFO] tweaked toml for git repo https://github.com/the8472/ffcnt written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/the8472/ffcnt already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded isatty v0.1.3
[INFO] [stderr]   Downloaded atty v0.2.2
[INFO] [stderr]   Downloaded derive-error v0.0.3
[INFO] [stderr]   Downloaded unicode-segmentation v1.2.0
[INFO] [stderr]   Downloaded clap v2.24.2
[INFO] [stderr]   Downloaded crc v1.4.0
[INFO] [stderr]   Downloaded uuid v0.3.1
[INFO] [stderr]   Downloaded flate2 v0.2.19
[INFO] [stderr]   Downloaded minilzo-sys v0.1.0
[INFO] [stderr]   Downloaded minilzo v0.1.2
[INFO] [stderr]   Downloaded case v0.1.0
[INFO] [stderr]   Downloaded platter-walk v0.1.2
[INFO] [stderr]   Downloaded cfg-if v0.1.1
[INFO] [stderr]   Downloaded miniz-sys v0.1.9
[INFO] [stderr]   Downloaded mnt v0.3.0
[INFO] [stderr]   Downloaded btrfs2 v1.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "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] cc67f4b92fdb8ccf1a48d5735bd03fd1061bda7dcb7694b0a05b34c1d891a945
[INFO] running `Command { std: "docker" "start" "-a" "cc67f4b92fdb8ccf1a48d5735bd03fd1061bda7dcb7694b0a05b34c1d891a945", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc67f4b92fdb8ccf1a48d5735bd03fd1061bda7dcb7694b0a05b34c1d891a945", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc67f4b92fdb8ccf1a48d5735bd03fd1061bda7dcb7694b0a05b34c1d891a945", kill_on_drop: false }`
[INFO] [stdout] cc67f4b92fdb8ccf1a48d5735bd03fd1061bda7dcb7694b0a05b34c1d891a945
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee0c6f71be89805eeccd59551ede024ceb133ff5d8bc909e05453511dbb6981b
[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" "ee0c6f71be89805eeccd59551ede024ceb133ff5d8bc909e05453511dbb6981b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.24
[INFO] [stderr]    Compiling cfg-if v0.1.1
[INFO] [stderr]    Compiling uuid v0.3.1
[INFO] [stderr]    Compiling unicode-segmentation v1.2.0
[INFO] [stderr]    Compiling case v0.1.0
[INFO] [stderr]    Compiling miniz-sys v0.1.9
[INFO] [stderr]    Compiling crc v1.4.0
[INFO] [stderr]    Compiling derive-error v0.0.3
[INFO] [stderr]    Compiling minilzo-sys v0.1.0
[INFO] [stderr]    Compiling nix v0.8.1
[INFO] [stderr]    Compiling mnt v0.3.0
[INFO] [stderr]    Compiling atty v0.2.2
[INFO] [stderr]    Compiling term_size v0.3.0
[INFO] [stderr]    Compiling isatty v0.1.3
[INFO] [stderr]    Compiling minilzo v0.1.2
[INFO] [stderr]    Compiling clap v2.24.2
[INFO] [stderr]    Compiling flate2 v0.2.19
[INFO] [stderr]    Compiling btrfs2 v1.2.2
[INFO] [stderr]    Compiling platter-walk v0.1.2
[INFO] [stderr]    Compiling ffcnt v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:177:56
[INFO] [stdout]     |
[INFO] [stdout] 177 |                     writeln!(std::io::stderr(),"{}", e.description()).unwrap();
[INFO] [stdout]     |                                                        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/main.rs:17:9
[INFO] [stdout]     |
[INFO] [stdout] 17  | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[warn(deprecated)]` implied by `#[warn(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:204:48
[INFO] [stdout]     |
[INFO] [stdout] 204 |             writeln!(std::io::stderr(),"{}", e.description()).unwrap();
[INFO] [stdout]     |                                                ^^^^^^^^^^^
[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/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/ffcnt-032f7fc04f08c153.ffcnt.99jkmf4f-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/ffcnt-032f7fc04f08c153.ffcnt.99jkmf4f-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/ffcnt-032f7fc04f08c153.ffcnt.99jkmf4f-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/ffcnt-032f7fc04f08c153.ffcnt.99jkmf4f-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/ffcnt-032f7fc04f08c153.ffcnt.99jkmf4f-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/ffcnt-032f7fc04f08c153.ffcnt.99jkmf4f-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/ffcnt-032f7fc04f08c153.ffcnt.99jkmf4f-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/ffcnt-032f7fc04f08c153.ffcnt.99jkmf4f-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/ffcnt-032f7fc04f08c153.ffcnt.99jkmf4f-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/ffcnt-032f7fc04f08c153.ffcnt.99jkmf4f-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/ffcnt-032f7fc04f08c153.ffcnt.99jkmf4f-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/ffcnt-032f7fc04f08c153.ffcnt.99jkmf4f-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/ffcnt-032f7fc04f08c153.ffcnt.99jkmf4f-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/ffcnt-032f7fc04f08c153.ffcnt.99jkmf4f-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/ffcnt-032f7fc04f08c153.ffcnt.99jkmf4f-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/ffcnt-032f7fc04f08c153.ffcnt.99jkmf4f-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/ffcnt-032f7fc04f08c153" "/opt/rustwide/target/debug/deps/ffcnt-032f7fc04f08c153.24n6wy7ase5tatxv.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/target/debug/build/miniz-sys-6e042b6ea84015d0/out" "-L" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libisatty-00a4efc54c804d4b.rlib" "/opt/rustwide/target/debug/deps/libplatter_walk-42306b7ad64a7932.rlib" "/opt/rustwide/target/debug/deps/libmnt-b9c0223b700ecd59.rlib" "/opt/rustwide/target/debug/deps/libbtrfs2-76f79e62166b56ab.rlib" "/opt/rustwide/target/debug/deps/libuuid-ef7a4b7fbfa8a923.rlib" "/opt/rustwide/target/debug/deps/libminilzo-adb2aba84b454034.rlib" "/opt/rustwide/target/debug/deps/libminilzo_sys-45659e2154918e20.rlib" "/opt/rustwide/target/debug/deps/libflate2-36b3f537503bcf04.rlib" "/opt/rustwide/target/debug/deps/libminiz_sys-abf352b5d53d4c8a.rlib" "/opt/rustwide/target/debug/deps/libcrc-dc538eebbba789e3.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-6cd99bbe299abb0c.rlib" "/opt/rustwide/target/debug/deps/libnix-a2faea477b5ddec1.rlib" "/opt/rustwide/target/debug/deps/libvoid-90ec4b4a2f3d40d2.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-622156f4d6d72add.rlib" "/opt/rustwide/target/debug/deps/libbitflags-2660c594cf04f3b5.rlib" "/opt/rustwide/target/debug/deps/libclap-60e2feb3d075171c.rlib" "/opt/rustwide/target/debug/deps/libatty-e5e559062dfb708f.rlib" "/opt/rustwide/target/debug/deps/libunicode_segmentation-2803da149426d1f0.rlib" "/opt/rustwide/target/debug/deps/libterm_size-9a47deed274fd3f5.rlib" "/opt/rustwide/target/debug/deps/liblibc-c848e24f011e25ec.rlib" "/opt/rustwide/target/debug/deps/libvec_map-9dd5ef6849339e6d.rlib" "/opt/rustwide/target/debug/deps/libbitflags-0980070795787ea3.rlib" "/opt/rustwide/target/debug/deps/libunicode_width-4dd2557e3fc1d326.rlib" "/opt/rustwide/target/debug/deps/libansi_term-1bf46383e1da780b.rlib" "/opt/rustwide/target/debug/deps/libstrsim-a6da7c298dd90abb.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-e12de7683a34c500.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-446a53c2e468675f.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-86fef9fb252a2d33.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-3bed9bfd30304751.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-0e38eeb474a7b386.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-a846ed547b824740.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-c9540f0a4fb9265d.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-7d2ca66c92c356eb.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-147e2c808f949493.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-bd2a4369506670e9.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-74bfdd0ce7d0ed48.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-6777f47f1c491841.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-b104f1790174f2be.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-db37898996f45c13.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-25b7435131fc4938.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-9d4b6f3c097e876e.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-3f953ad652ab829a.rlib" "-Wl,-Bdynamic" "-llzo2" "-lz" "-llzo2" "-llzo2" "-lutil" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -llzo2
[INFO] [stdout]           /usr/bin/ld: cannot find -llzo2
[INFO] [stdout]           /usr/bin/ld: cannot find -llzo2
[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 `ffcnt`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "ee0c6f71be89805eeccd59551ede024ceb133ff5d8bc909e05453511dbb6981b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee0c6f71be89805eeccd59551ede024ceb133ff5d8bc909e05453511dbb6981b", kill_on_drop: false }`
[INFO] [stdout] ee0c6f71be89805eeccd59551ede024ceb133ff5d8bc909e05453511dbb6981b