[INFO] fetching crate inputplug 0.4.0...
[INFO] testing inputplug-0.4.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate inputplug 0.4.0 into /workspace/builds/worker-107/source
[INFO] validating manifest of crates.io crate inputplug 0.4.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate inputplug 0.4.0
[INFO] finished tweaking crates.io crate inputplug 0.4.0
[INFO] tweaked toml for crates.io crate inputplug 0.4.0 written to /workspace/builds/worker-107/source/Cargo.toml
[INFO] crate crates.io crate inputplug 0.4.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 153271c7a569f364d9321d3d297b2ca8aa1a225c77ba98ecf14c5073d5dedc92
[INFO] running `Command { std: "docker" "start" "-a" "153271c7a569f364d9321d3d297b2ca8aa1a225c77ba98ecf14c5073d5dedc92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "153271c7a569f364d9321d3d297b2ca8aa1a225c77ba98ecf14c5073d5dedc92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "153271c7a569f364d9321d3d297b2ca8aa1a225c77ba98ecf14c5073d5dedc92", kill_on_drop: false }`
[INFO] [stdout] 153271c7a569f364d9321d3d297b2ca8aa1a225c77ba98ecf14c5073d5dedc92
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9e28735a461581cc28a835fa03aabb1e18df4c74761bd2ca1de58758f62e31c1
[INFO] running `Command { std: "docker" "start" "-a" "9e28735a461581cc28a835fa03aabb1e18df4c74761bd2ca1de58758f62e31c1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling anyhow v1.0.42
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling pidfile-rs v0.1.0
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling gethostname v0.2.1
[INFO] [stderr]    Compiling nix v0.20.0
[INFO] [stderr]    Compiling nix v0.22.0
[INFO] [stderr]    Compiling x11rb v0.8.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]    Compiling structopt-derive v0.4.15
[INFO] [stderr]    Compiling thiserror v1.0.26
[INFO] [stderr]    Compiling structopt v0.3.22
[INFO] [stderr]    Compiling inputplug v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `conn`
[INFO] [stdout]   --> src/main.rs:95:26
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn to_cmdline(&self, conn: &impl RequestConnection) -> Vec<String> {
[INFO] [stdout]    |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_conn`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-m64" "/opt/rustwide/target/debug/deps/inputplug-fa6f3c7c8d86741c.inputplug.855c9dd5-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/inputplug-fa6f3c7c8d86741c.inputplug.855c9dd5-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/inputplug-fa6f3c7c8d86741c.inputplug.855c9dd5-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/inputplug-fa6f3c7c8d86741c.inputplug.855c9dd5-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/inputplug-fa6f3c7c8d86741c.inputplug.855c9dd5-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/inputplug-fa6f3c7c8d86741c.inputplug.855c9dd5-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/inputplug-fa6f3c7c8d86741c.inputplug.855c9dd5-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/inputplug-fa6f3c7c8d86741c.inputplug.855c9dd5-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/inputplug-fa6f3c7c8d86741c.inputplug.855c9dd5-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/inputplug-fa6f3c7c8d86741c.inputplug.855c9dd5-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/inputplug-fa6f3c7c8d86741c.inputplug.855c9dd5-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/inputplug-fa6f3c7c8d86741c.inputplug.855c9dd5-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/inputplug-fa6f3c7c8d86741c.inputplug.855c9dd5-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/inputplug-fa6f3c7c8d86741c.inputplug.855c9dd5-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/inputplug-fa6f3c7c8d86741c.inputplug.855c9dd5-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/inputplug-fa6f3c7c8d86741c.inputplug.855c9dd5-cgu.9.rcgu.o" "/opt/rustwide/target/debug/deps/inputplug-fa6f3c7c8d86741c.23a9kcxfn4swkiyr.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libx11rb-f72cabb8564e27bd.rlib" "/opt/rustwide/target/debug/deps/libgethostname-10950bad5b482c2f.rlib" "/opt/rustwide/target/debug/deps/libnix-526aa8526c7f9af4.rlib" "/opt/rustwide/target/debug/deps/libanyhow-2629a2274b5b1f67.rlib" "/opt/rustwide/target/debug/deps/libstructopt-e6312320355a5ec3.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-df981c5871754530.rlib" "/opt/rustwide/target/debug/deps/libclap-e01d63913dc0637f.rlib" "/opt/rustwide/target/debug/deps/libtextwrap-349506f3b2349b3f.rlib" "/opt/rustwide/target/debug/deps/libunicode_width-05a4b639dec6224c.rlib" "/opt/rustwide/target/debug/deps/libpidfile_rs-6ebe46f0d80d5600.rlib" "/opt/rustwide/target/debug/deps/libthiserror-fcaa1b2c1e040284.rlib" "/opt/rustwide/target/debug/deps/liblog-5adcf922eb1fa2ac.rlib" "/opt/rustwide/target/debug/deps/libnix-55d3b675f4c85942.rlib" "/opt/rustwide/target/debug/deps/libbitflags-117d41ac256572da.rlib" "/opt/rustwide/target/debug/deps/libmemoffset-cfa241b6ab16dc70.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-dece450273084492.rlib" "/opt/rustwide/target/debug/deps/liblibc-0acd51459dcd3de7.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-008055cc7d873802.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-06f01ac2578bda94.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-f9a3c3274a1835e0.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-d4cbb754ee9f4daa.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-95c14e1c1e3ebcc4.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-d489f0ca872880cc.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-75f07df0b18fea39.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-0c35b278736219a2.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-e530649c9a06e3c6.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-6b148909d375a785.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-cd15fa647f4775d1.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-74be3a703f788ba2.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-8f2c5b445c28b2e3.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-8480e85e0be96197.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-ac23a75f6f42004e.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-557ba8776e04d182.rlib" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-4beb03d03503c439.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-dd7db1bec6909f24.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/1.55.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-o" "/opt/rustwide/target/debug/deps/inputplug-fa6f3c7c8d86741c" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs"
[INFO] [stdout]   = note: /usr/bin/ld: /opt/rustwide/target/debug/deps/libpidfile_rs-6ebe46f0d80d5600.rlib(pidfile_rs-6ebe46f0d80d5600.pidfile_rs.81238fad-cgu.0.rcgu.o): in function `pidfile_rs::Pidfile::new':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/pidfile-rs-0.1.0/src/lib.rs:124: undefined reference to `pidfile_open'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libpidfile_rs-6ebe46f0d80d5600.rlib(pidfile_rs-6ebe46f0d80d5600.pidfile_rs.81238fad-cgu.0.rcgu.o): in function `pidfile_rs::Pidfile::write':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/pidfile-rs-0.1.0/src/lib.rs:156: undefined reference to `pidfile_write'
[INFO] [stdout]           /usr/bin/ld: /opt/rustwide/target/debug/deps/libpidfile_rs-6ebe46f0d80d5600.rlib(pidfile_rs-6ebe46f0d80d5600.pidfile_rs.81238fad-cgu.0.rcgu.o): in function `<pidfile_rs::Pidfile as core::ops::drop::Drop>::drop':
[INFO] [stdout]           /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/pidfile-rs-0.1.0/src/lib.rs:183: undefined reference to `pidfile_remove'
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout]   = help: some `extern` functions couldn't be found; some native libraries may need to be installed or have their path specified
[INFO] [stdout]   = note: use the `-l` flag to specify native libraries to link
[INFO] [stdout]   = note: use the `cargo:rustc-link-lib` directive to specify the native libraries to link with Cargo (see https://doc.rust-lang.org/cargo/reference/build-scripts.html#cargorustc-link-libkindname)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `inputplug` due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "9e28735a461581cc28a835fa03aabb1e18df4c74761bd2ca1de58758f62e31c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e28735a461581cc28a835fa03aabb1e18df4c74761bd2ca1de58758f62e31c1", kill_on_drop: false }`
[INFO] [stdout] 9e28735a461581cc28a835fa03aabb1e18df4c74761bd2ca1de58758f62e31c1