[INFO] fetching crate rust-mpfr 0.1.7...
[INFO] testing rust-mpfr-0.1.7 against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] extracting crate rust-mpfr 0.1.7 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate rust-mpfr 0.1.7 on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-15/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 55640dc75da17d4a6af6b05549828b6ca620d332e9ac75d2bf108b768b39cc6d
[INFO] running `Command { std: "docker" "start" "-a" "55640dc75da17d4a6af6b05549828b6ca620d332e9ac75d2bf108b768b39cc6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "55640dc75da17d4a6af6b05549828b6ca620d332e9ac75d2bf108b768b39cc6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55640dc75da17d4a6af6b05549828b6ca620d332e9ac75d2bf108b768b39cc6d", kill_on_drop: false }`
[INFO] [stdout] 55640dc75da17d4a6af6b05549828b6ca620d332e9ac75d2bf108b768b39cc6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a65b1e974ac649cb4426712a63a311cc1e0aa2acf83b5677c816433b16be3334
[INFO] running `Command { std: "docker" "start" "-a" "a65b1e974ac649cb4426712a63a311cc1e0aa2acf83b5677c816433b16be3334", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[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 status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-Wl,--as-needed" "-L" "/opt/rustwide/rustup-home/toolchains/99e3aef02079e9c10583638520cd0c134dc3a01d/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.7cmhi9a5-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.7cmhi9a5-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.7cmhi9a5-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.7cmhi9a5-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.7cmhi9a5-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.7cmhi9a5-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.7cmhi9a5-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.7cmhi9a5-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.7cmhi9a5-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.7cmhi9a5-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.7cmhi9a5-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.7cmhi9a5-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.7cmhi9a5-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.7cmhi9a5-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.7cmhi9a5-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.rust_mpfr.7cmhi9a5-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/librust_mpfr.so" "-Wl,--version-script=/tmp/rustciuOXj5/list" "/opt/rustwide/target/debug/deps/rust_mpfr.2dgmaabh5yu6m0h2.rcgu.o" "/opt/rustwide/target/debug/deps/rust_mpfr.3olujay3340gmpew.rcgu.o" "-shared" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/99e3aef02079e9c10583638520cd0c134dc3a01d/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-lmpfr" "-Wl,-Bstatic" "-Wl,--whole-archive" "/tmp/rustciuOXj5/librustc_serialize-3a45b7a0cb68c0b0.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustciuOXj5/libgmp-be2b98e5df1441d2.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustciuOXj5/liblibc-2eeb146fbbc48d30.rlib" "-Wl,--no-whole-archive" "-Wl,--start-group" "-Wl,--whole-archive" "/tmp/rustciuOXj5/libstd-21256c14e4504640.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustciuOXj5/libpanic_unwind-986e7fea4474d4d2.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustciuOXj5/libminiz_oxide-91d85f45babdb06e.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustciuOXj5/libadler-756509c31813f9a6.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustciuOXj5/libobject-5c2ef587e740c0cc.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustciuOXj5/libaddr2line-ad8f9371d31db1b3.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustciuOXj5/libgimli-402820fb3b4d3dd8.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustciuOXj5/libstd_detect-5e8e903f07dc8747.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustciuOXj5/librustc_demangle-7ab9ae5080c07187.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustciuOXj5/libhashbrown-c8e8d47c6bf14de2.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustciuOXj5/librustc_std_workspace_alloc-5a02dbb58abd015a.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustciuOXj5/libunwind-cedc8fec61444895.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustciuOXj5/libcfg_if-a1c96351c52bc56a.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustciuOXj5/liblibc-e41c6d24baeb2249.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustciuOXj5/liballoc-62493b241881590c.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustciuOXj5/librustc_std_workspace_core-a1fd7734706d5518.rlib" "-Wl,--no-whole-archive" "-Wl,--whole-archive" "/tmp/rustciuOXj5/libcore-c8ded1707ad10767.rlib" "-Wl,--no-whole-archive" "-Wl,--end-group" "/tmp/rustciuOXj5/libcompiler_builtins-1eec8756baa5bc24.rlib" "-Wl,-Bdynamic" "-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" "a65b1e974ac649cb4426712a63a311cc1e0aa2acf83b5677c816433b16be3334", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a65b1e974ac649cb4426712a63a311cc1e0aa2acf83b5677c816433b16be3334", kill_on_drop: false }`
[INFO] [stdout] a65b1e974ac649cb4426712a63a311cc1e0aa2acf83b5677c816433b16be3334