[INFO] fetching crate rust-mpfr 0.1.7...
[INFO] testing rust-mpfr-0.1.7 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate rust-mpfr 0.1.7 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate rust-mpfr 0.1.7 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust-mpfr 0.1.7
[INFO] finished tweaking crates.io crate rust-mpfr 0.1.7
[INFO] tweaked toml for crates.io crate rust-mpfr 0.1.7 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5f5f68da508b49869a69972f82359cf75743709a4928e18c3d178b8e4bb0615
[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" "d5f5f68da508b49869a69972f82359cf75743709a4928e18c3d178b8e4bb0615", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5f5f68da508b49869a69972f82359cf75743709a4928e18c3d178b8e4bb0615", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5f5f68da508b49869a69972f82359cf75743709a4928e18c3d178b8e4bb0615", kill_on_drop: false }`
[INFO] [stdout] d5f5f68da508b49869a69972f82359cf75743709a4928e18c3d178b8e4bb0615
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1efeabb9606ab020f456ab4e3d14e8c5af7e9daa4b093a6aae596f7657a72213
[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" "1efeabb9606ab020f456ab4e3d14e8c5af7e9daa4b093a6aae596f7657a72213", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-gmp v0.3.2
[INFO] [stderr]    Compiling rust-mpfr v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]     --> src/mpfr.rs:1224:17
[INFO] [stdout]      |
[INFO] [stdout] 1224 |         let s = try!(d.read_str());
[INFO] [stdout]      |                 ^^^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/mpfr.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | use std::mem::uninitialized;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/mpfr.rs:169:28
[INFO] [stdout]     |
[INFO] [stdout] 169 |             let mut mpfr = uninitialized();
[INFO] [stdout]     |                            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/mpfr.rs:177:28
[INFO] [stdout]     |
[INFO] [stdout] 177 |             let mut mpfr = uninitialized();
[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/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.95roiueq-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.95roiueq-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.95roiueq-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.95roiueq-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.95roiueq-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.95roiueq-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.95roiueq-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.95roiueq-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.95roiueq-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.95roiueq-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.95roiueq-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.95roiueq-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.95roiueq-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.95roiueq-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/librust_mpfr.so" "-Wl,--version-script=/tmp/rustcgbqNr1/list" "/opt/rustwide/target/debug/deps/rust_mpfr.4a1rh199gthkwwdy.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.3ohftr2j8g6m08iv.rcgu.o" "-shared" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/beta-2021-01-01-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-lmpfr" "-Wl,-Bstatic" "-Wl,--whole-archive" "/tmp/rustcgbqNr1/librustc_serialize-7a3ef2123a40ae59.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcgbqNr1/libgmp-00a20e7c7fc3209a.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcgbqNr1/liblibc-77d6541a42757d2c.rlib" "-Wl,--no-whole-archive" "-Wl,--start-group" "-Wl,--whole-archive" "/tmp/rustcgbqNr1/libstd-7444fd17919e9af0.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcgbqNr1/libpanic_unwind-0ee2f67026959ab7.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcgbqNr1/libminiz_oxide-df1bcd1e82256d04.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcgbqNr1/libadler-ed9ecf1b54021131.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcgbqNr1/libobject-0ede66bb24e94b96.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcgbqNr1/libaddr2line-7c2de7f50940865c.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcgbqNr1/libgimli-b138d50085fd4683.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcgbqNr1/librustc_demangle-6576870d8f2b9ae2.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcgbqNr1/libhashbrown-042a30c5f67b2c91.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcgbqNr1/librustc_std_workspace_alloc-7b3f33d3dbe385dc.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcgbqNr1/libunwind-90b3063cd7b22527.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcgbqNr1/libcfg_if-17f9484f8dc4da1e.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcgbqNr1/liblibc-df38345acd9d92e1.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcgbqNr1/liballoc-a5e10ca10bdd9e54.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcgbqNr1/librustc_std_workspace_core-9e5b4162eeef2cef.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustcgbqNr1/libcore-3a4e739a77468800.rlib" "-Wl,--no-whole-archive" "-Wl,--end-group" "/tmp/rustcgbqNr1/libcompiler_builtins-0f3a0c116d5e04d6.rlib" "-Wl,-Bdynamic" "-lgmp" "-lgmp" "-lgmp" "-lgmp" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -lmpfr
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-mpfr`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "1efeabb9606ab020f456ab4e3d14e8c5af7e9daa4b093a6aae596f7657a72213", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1efeabb9606ab020f456ab4e3d14e8c5af7e9daa4b093a6aae596f7657a72213", kill_on_drop: false }`
[INFO] [stdout] 1efeabb9606ab020f456ab4e3d14e8c5af7e9daa4b093a6aae596f7657a72213