[INFO] cloning repository https://github.com/qezz/rust-ffi-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/qezz/rust-ffi-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqezz%2Frust-ffi-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqezz%2Frust-ffi-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 20254e58d38ec17be2261bc2a721bfede617e454
[INFO] testing qezz/rust-ffi-demo against 1.45.2 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fqezz%2Frust-ffi-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/qezz/rust-ffi-demo on toolchain 1.45.2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/qezz/rust-ffi-demo
[INFO] finished tweaking git repo https://github.com/qezz/rust-ffi-demo
[INFO] tweaked toml for git repo https://github.com/qezz/rust-ffi-demo written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/qezz/rust-ffi-demo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.45.2" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "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] df16e04078457f99417b42c459a93c186d25a80cfc1c7ae7d060b3743ded81e1
[INFO] running `Command { std: "docker" "start" "-a" "df16e04078457f99417b42c459a93c186d25a80cfc1c7ae7d060b3743ded81e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df16e04078457f99417b42c459a93c186d25a80cfc1c7ae7d060b3743ded81e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df16e04078457f99417b42c459a93c186d25a80cfc1c7ae7d060b3743ded81e1", kill_on_drop: false }`
[INFO] [stdout] df16e04078457f99417b42c459a93c186d25a80cfc1c7ae7d060b3743ded81e1
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1.45.2" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c44d37c0db9289e062e4d1cff7e37bac7ef4daa07ffbe62647776e378a1ed9fe
[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" "c44d37c0db9289e062e4d1cff7e37bac7ef4daa07ffbe62647776e378a1ed9fe", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.1
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling rustc-demangle v0.1.11
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling bindgen v0.45.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling clang-sys v0.26.3
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling regex-syntax v0.6.4
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling serde_json v1.0.33
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling nom v4.1.1
[INFO] [stderr]    Compiling cexpr v0.3.3
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling env_logger v0.6.0
[INFO] [stderr]    Compiling serde_derive v1.0.82
[INFO] [stderr]    Compiling failure v0.1.3
[INFO] [stderr]    Compiling which v2.0.1
[INFO] [stderr]    Compiling rust_ffi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant is never used: `true_`
[INFO] [stdout]  --> /opt/rustwide/target/debug/build/rust_ffi-20f5f550f7e76bd5/out/c_mx_bindings.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub const true_ : u32 = 1 ; pub const false_ : u32 = 0 ; pub const __bool_true_false_are_defined : u32 = 1 ; extern "C" { pub fn transpose ( arg1 : * mut f64 , arg2 : * mut f64 , arg3 : :: std :: os :: raw :: c_int ) ; } extern "C" { pub fn multiply ( arg1 : * mut f64 , arg2 : * mut f64 , arg3 : * mut f64 , arg4 : :: std :: os :: raw :: c_int ) ; } extern "C" { pub fn isEqual ( arg1 : * mut f64 , arg2 : * mut f64 , arg3 : :: std :: os :: raw :: c_int ) -> bool ; } extern "C" { pub fn multiply_l ( arg1 : * mut f64 , arg2 : * mut f64 , arg3 : * mut f64 , arg4 : :: std :: os :: raw :: c_int ) ; } extern "C" { pub fn multiply_pf ( arg1 : * mut f64 , arg2 : * mut f64 , arg3 : * mut f64 , arg4 : :: std :: os :: raw :: c_int ) ; }
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `false_`
[INFO] [stdout]  --> /opt/rustwide/target/debug/build/rust_ffi-20f5f550f7e76bd5/out/c_mx_bindings.rs:3:29
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub const true_ : u32 = 1 ; pub const false_ : u32 = 0 ; pub const __bool_true_false_are_defined : u32 = 1 ; extern "C" { pub fn transpose ( arg1 : * mut f64 , arg2 : * mut f64 , arg3 : :: std :: os :: raw :: c_int ) ; } extern "C" { pub fn multiply ( arg1 : * mut f64 , arg2 : * mut f64 , arg3 : * mut f64 , arg4 : :: std :: os :: raw :: c_int ) ; } extern "C" { pub fn isEqual ( arg1 : * mut f64 , arg2 : * mut f64 , arg3 : :: std :: os :: raw :: c_int ) -> bool ; } extern "C" { pub fn multiply_l ( arg1 : * mut f64 , arg2 : * mut f64 , arg3 : * mut f64 , arg4 : :: std :: os :: raw :: c_int ) ; } extern "C" { pub fn multiply_pf ( arg1 : * mut f64 , arg2 : * mut f64 , arg3 : * mut f64 , arg4 : :: std :: os :: raw :: c_int ) ; }
[INFO] [stdout]   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `isEqual`
[INFO] [stdout]  --> /opt/rustwide/target/debug/build/rust_ffi-20f5f550f7e76bd5/out/c_mx_bindings.rs:3:365
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub const true_ : u32 = 1 ; pub const false_ : u32 = 0 ; pub const __bool_true_false_are_defined : u32 = 1 ; extern "C" { pub fn transpose ( arg1 : * mut f64 , arg2 : * mut f64 , arg3 : :: std :: os :: raw :: c_int ) ; } extern "C" { pub fn multiply ( arg1 : * mut f64 , arg2 : * mut f64 , arg3 : * mut f64 , arg4 : :: std :: os :: raw :: c_int ) ; } extern "C" { pub fn isEqual ( arg1 : * mut f64 , arg2 : * mut f64 , arg3 : :: std :: os :: raw :: c_int ) -> bool ; } extern "C" { pub fn multiply_l ( arg1 : * mut f64 , arg2 : * mut f64 , arg3 : * mut f64 , arg4 : :: std :: os :: raw :: c_int ) ; } extern "C" { pub fn multiply_pf ( arg1 : * mut f64 , arg2 : * mut f64 , arg3 : * mut f64 , arg4 : :: std :: os :: raw :: c_int ) ; }
[INFO] [stdout]   |                                                                                                                                                                                                                                                                                                                                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SubCommand`
[INFO] [stdout]  --> src/main.rs:6:22
[INFO] [stdout]   |
[INFO] [stdout] 6 | use clap::{Arg, App, SubCommand};
[INFO] [stdout]   |                      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Error`, `Value`, `json`
[INFO] [stdout]  --> src/main.rs:7:18
[INFO] [stdout]   |
[INFO] [stdout] 7 | use serde_json::{Value, Error, json};
[INFO] [stdout]   |                  ^^^^^  ^^^^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use serde;
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `transpose`
[INFO] [stdout]   --> src/main.rs:12:16
[INFO] [stdout]    |
[INFO] [stdout] 12 | use rust_ffi::{transpose, multiply};
[INFO] [stdout]    |                ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/main.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn new(s: &[f64]) -> LinearMatrix {
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[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" "-L" "/opt/rustwide/rustup-home/toolchains/1.45.2-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/rust_ffi-cd08bb090a9615d8.rust_ffi.21depccu-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/rust_ffi-cd08bb090a9615d8.rust_ffi.21depccu-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/rust_ffi-cd08bb090a9615d8.rust_ffi.21depccu-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/rust_ffi-cd08bb090a9615d8.rust_ffi.21depccu-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/rust_ffi-cd08bb090a9615d8.rust_ffi.21depccu-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/rust_ffi-cd08bb090a9615d8.rust_ffi.21depccu-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/rust_ffi-cd08bb090a9615d8.rust_ffi.21depccu-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/rust_ffi-cd08bb090a9615d8.rust_ffi.21depccu-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/rust_ffi-cd08bb090a9615d8.rust_ffi.21depccu-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/rust_ffi-cd08bb090a9615d8.rust_ffi.21depccu-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/rust_ffi-cd08bb090a9615d8.rust_ffi.21depccu-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/rust_ffi-cd08bb090a9615d8.rust_ffi.21depccu-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/rust_ffi-cd08bb090a9615d8.rust_ffi.21depccu-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/rust_ffi-cd08bb090a9615d8.rust_ffi.21depccu-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/rust_ffi-cd08bb090a9615d8.rust_ffi.21depccu-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/rust_ffi-cd08bb090a9615d8.rust_ffi.21depccu-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/rust_ffi-cd08bb090a9615d8" "/opt/rustwide/target/debug/deps/rust_ffi-cd08bb090a9615d8.2xa603ajf72rruud.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "./c" "-L" "/opt/rustwide/rustup-home/toolchains/1.45.2-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/librust_ffi-a40d0056627c6f14.rlib" "/opt/rustwide/target/debug/deps/libserde_json-af3222e0c6c84412.rlib" "/opt/rustwide/target/debug/deps/libryu-1453091df3717590.rlib" "/opt/rustwide/target/debug/deps/libitoa-a13d72d2b2f6d981.rlib" "/opt/rustwide/target/debug/deps/libserde-abf613448ee1f12d.rlib" "/opt/rustwide/target/debug/deps/libclap-950aa2b9a94a6323.rlib" "/opt/rustwide/target/debug/deps/libvec_map-3d63e171f843dcc4.rlib" "/opt/rustwide/target/debug/deps/libtextwrap-ac4b2cf9a0c90aea.rlib" "/opt/rustwide/target/debug/deps/libunicode_width-2b852c31a4b608cb.rlib" "/opt/rustwide/target/debug/deps/libstrsim-6094ef4bc248b16c.rlib" "/opt/rustwide/target/debug/deps/libbitflags-eda987bbeb521c5d.rlib" "/opt/rustwide/target/debug/deps/libatty-38b1e8f55ec0542d.rlib" "/opt/rustwide/target/debug/deps/liblibc-9118970dadd5bb31.rlib" "/opt/rustwide/target/debug/deps/libansi_term-a7bdbb1c1b6d9ee6.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.45.2-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-8bb11f807a7b6b4c.rlib" "/opt/rustwide/rustup-home/toolchains/1.45.2-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-ca8087507780d964.rlib" "/opt/rustwide/rustup-home/toolchains/1.45.2-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-259c92b387c1c166.rlib" "/opt/rustwide/rustup-home/toolchains/1.45.2-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-16e0a2fbbb8e14b3.rlib" "/opt/rustwide/rustup-home/toolchains/1.45.2-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-8a1651b8e23d2aaf.rlib" "/opt/rustwide/rustup-home/toolchains/1.45.2-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-23bdd98b0574083e.rlib" "/opt/rustwide/rustup-home/toolchains/1.45.2-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-855a92055ec33e2e.rlib" "/opt/rustwide/rustup-home/toolchains/1.45.2-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-24c70dd44fbacdfb.rlib" "/opt/rustwide/rustup-home/toolchains/1.45.2-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-b326273841bae587.rlib" "/opt/rustwide/rustup-home/toolchains/1.45.2-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-ac3c1f0e16507051.rlib" "/opt/rustwide/rustup-home/toolchains/1.45.2-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-a5729542b65954aa.rlib" "/opt/rustwide/rustup-home/toolchains/1.45.2-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-09bd1119ab1cad7d.rlib" "/opt/rustwide/rustup-home/toolchains/1.45.2-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-9a787681bfbeaf61.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.45.2-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-5a0398ee67f74664.rlib" "-Wl,-Bdynamic" "-lmx" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-ldl" "-lutil"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -lmx
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_ffi`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "c44d37c0db9289e062e4d1cff7e37bac7ef4daa07ffbe62647776e378a1ed9fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c44d37c0db9289e062e4d1cff7e37bac7ef4daa07ffbe62647776e378a1ed9fe", kill_on_drop: false }`
[INFO] [stdout] c44d37c0db9289e062e4d1cff7e37bac7ef4daa07ffbe62647776e378a1ed9fe