[INFO] crate udev-dl 0.0.1 is already in cache
[INFO] testing udev-dl-0.0.1 against 1.44.0 for beta-1.45-1
[INFO] extracting crate udev-dl 0.0.1 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate udev-dl 0.0.1 on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate udev-dl 0.0.1
[INFO] finished tweaking crates.io crate udev-dl 0.0.1
[INFO] tweaked toml for crates.io crate udev-dl 0.0.1 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 94e6889c27ac5d8cbfa32cdd2e1da5c49ec55b761dfa95e8cfca2ef53ffb8c40
[INFO] running `"docker" "start" "-a" "94e6889c27ac5d8cbfa32cdd2e1da5c49ec55b761dfa95e8cfca2ef53ffb8c40"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling dylib v0.0.3
[INFO] [stderr]    Compiling udev-dl v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     try!(f.write_str(self.kind.as_str()));
[INFO] [stderr]     |     ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:143:7
[INFO] [stderr]     |
[INFO] [stderr] 143 |       try!(f.write_str(" ("));
[INFO] [stderr]     |       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:144:7
[INFO] [stderr]     |
[INFO] [stderr] 144 |       try!(f.write_str(self.detail.as_ref()));
[INFO] [stderr]     |       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:145:7
[INFO] [stderr]     |
[INFO] [stderr] 145 |       try!(f.write_str(")"));
[INFO] [stderr]     |       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:39:21
[INFO] [stderr]     |
[INFO] [stderr] 39  |             let lib = try!(open_lib(&[$($lib_name),*]));
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] ...
[INFO] [stderr] 178 | / udev_link! { Udev, ["libudev.so", "libudev.so.1"],
[INFO] [stderr] 179 | |     pub fn udev_ref(udev: *mut udev) -> *mut udev,
[INFO] [stderr] 180 | |     pub fn udev_unref(udev: *mut udev) -> *mut udev,
[INFO] [stderr] 181 | |     pub fn udev_new() -> *mut udev,
[INFO] [stderr] ...   |
[INFO] [stderr] 268 | |     pub fn udev_util_encode_string(str: *const c_char, str_enc: *mut c_char, len: size_t) -> c_int,
[INFO] [stderr] 269 | | }
[INFO] [stderr]     | |_- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:40:28
[INFO] [stderr]     |
[INFO] [stderr] 40  |             $(let $fn_name = try!(get_sym(&lib, stringify!($fn_name)));)*
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] ...
[INFO] [stderr] 178 | / udev_link! { Udev, ["libudev.so", "libudev.so.1"],
[INFO] [stderr] 179 | |     pub fn udev_ref(udev: *mut udev) -> *mut udev,
[INFO] [stderr] 180 | |     pub fn udev_unref(udev: *mut udev) -> *mut udev,
[INFO] [stderr] 181 | |     pub fn udev_new() -> *mut udev,
[INFO] [stderr] ...   |
[INFO] [stderr] 268 | |     pub fn udev_util_encode_string(str: *const c_char, str_enc: *mut c_char, len: size_t) -> c_int,
[INFO] [stderr] 269 | | }
[INFO] [stderr]     | |_- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.19s
[INFO] running `"docker" "inspect" "94e6889c27ac5d8cbfa32cdd2e1da5c49ec55b761dfa95e8cfca2ef53ffb8c40"`
[INFO] running `"docker" "rm" "-f" "94e6889c27ac5d8cbfa32cdd2e1da5c49ec55b761dfa95e8cfca2ef53ffb8c40"`
[INFO] [stdout] 94e6889c27ac5d8cbfa32cdd2e1da5c49ec55b761dfa95e8cfca2ef53ffb8c40
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 076c3b886da77832ff57e5ff03d9ed89f82b89d65742c04b1ebd5fc70bf5a1f3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "076c3b886da77832ff57e5ff03d9ed89f82b89d65742c04b1ebd5fc70bf5a1f3"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling udev-dl v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     try!(f.write_str(self.kind.as_str()));
[INFO] [stderr]     |     ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:143:7
[INFO] [stderr]     |
[INFO] [stderr] 143 |       try!(f.write_str(" ("));
[INFO] [stderr]     |       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:144:7
[INFO] [stderr]     |
[INFO] [stderr] 144 |       try!(f.write_str(self.detail.as_ref()));
[INFO] [stderr]     |       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:145:7
[INFO] [stderr]     |
[INFO] [stderr] 145 |       try!(f.write_str(")"));
[INFO] [stderr]     |       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:39:21
[INFO] [stderr]     |
[INFO] [stderr] 39  |             let lib = try!(open_lib(&[$($lib_name),*]));
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] ...
[INFO] [stderr] 178 | / udev_link! { Udev, ["libudev.so", "libudev.so.1"],
[INFO] [stderr] 179 | |     pub fn udev_ref(udev: *mut udev) -> *mut udev,
[INFO] [stderr] 180 | |     pub fn udev_unref(udev: *mut udev) -> *mut udev,
[INFO] [stderr] 181 | |     pub fn udev_new() -> *mut udev,
[INFO] [stderr] ...   |
[INFO] [stderr] 268 | |     pub fn udev_util_encode_string(str: *const c_char, str_enc: *mut c_char, len: size_t) -> c_int,
[INFO] [stderr] 269 | | }
[INFO] [stderr]     | |_- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:40:28
[INFO] [stderr]     |
[INFO] [stderr] 40  |             $(let $fn_name = try!(get_sym(&lib, stringify!($fn_name)));)*
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] ...
[INFO] [stderr] 178 | / udev_link! { Udev, ["libudev.so", "libudev.so.1"],
[INFO] [stderr] 179 | |     pub fn udev_ref(udev: *mut udev) -> *mut udev,
[INFO] [stderr] 180 | |     pub fn udev_unref(udev: *mut udev) -> *mut udev,
[INFO] [stderr] 181 | |     pub fn udev_new() -> *mut udev,
[INFO] [stderr] ...   |
[INFO] [stderr] 268 | |     pub fn udev_util_encode_string(str: *const c_char, str_enc: *mut c_char, len: size_t) -> c_int,
[INFO] [stderr] 269 | | }
[INFO] [stderr]     | |_- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     try!(f.write_str(self.kind.as_str()));
[INFO] [stderr]     |     ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:143:7
[INFO] [stderr]     |
[INFO] [stderr] 143 |       try!(f.write_str(" ("));
[INFO] [stderr]     |       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:144:7
[INFO] [stderr]     |
[INFO] [stderr] 144 |       try!(f.write_str(self.detail.as_ref()));
[INFO] [stderr]     |       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:145:7
[INFO] [stderr]     |
[INFO] [stderr] 145 |       try!(f.write_str(")"));
[INFO] [stderr]     |       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:39:21
[INFO] [stderr]     |
[INFO] [stderr] 39  |             let lib = try!(open_lib(&[$($lib_name),*]));
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] ...
[INFO] [stderr] 178 | / udev_link! { Udev, ["libudev.so", "libudev.so.1"],
[INFO] [stderr] 179 | |     pub fn udev_ref(udev: *mut udev) -> *mut udev,
[INFO] [stderr] 180 | |     pub fn udev_unref(udev: *mut udev) -> *mut udev,
[INFO] [stderr] 181 | |     pub fn udev_new() -> *mut udev,
[INFO] [stderr] ...   |
[INFO] [stderr] 268 | |     pub fn udev_util_encode_string(str: *const c_char, str_enc: *mut c_char, len: size_t) -> c_int,
[INFO] [stderr] 269 | | }
[INFO] [stderr]     | |_- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:40:28
[INFO] [stderr]     |
[INFO] [stderr] 40  |             $(let $fn_name = try!(get_sym(&lib, stringify!($fn_name)));)*
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] ...
[INFO] [stderr] 178 | / udev_link! { Udev, ["libudev.so", "libudev.so.1"],
[INFO] [stderr] 179 | |     pub fn udev_ref(udev: *mut udev) -> *mut udev,
[INFO] [stderr] 180 | |     pub fn udev_unref(udev: *mut udev) -> *mut udev,
[INFO] [stderr] 181 | |     pub fn udev_new() -> *mut udev,
[INFO] [stderr] ...   |
[INFO] [stderr] 268 | |     pub fn udev_util_encode_string(str: *const c_char, str_enc: *mut c_char, len: size_t) -> c_int,
[INFO] [stderr] 269 | | }
[INFO] [stderr]     | |_- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `"docker" "inspect" "076c3b886da77832ff57e5ff03d9ed89f82b89d65742c04b1ebd5fc70bf5a1f3"`
[INFO] running `"docker" "rm" "-f" "076c3b886da77832ff57e5ff03d9ed89f82b89d65742c04b1ebd5fc70bf5a1f3"`
[INFO] [stdout] 076c3b886da77832ff57e5ff03d9ed89f82b89d65742c04b1ebd5fc70bf5a1f3
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "test" "--frozen"`
[INFO] [stdout] 8a82b5e1f208a7f6fb4164ff125e1b11c35d3f999066c50591fd279bfa7a38d6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "8a82b5e1f208a7f6fb4164ff125e1b11c35d3f999066c50591fd279bfa7a38d6"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     try!(f.write_str(self.kind.as_str()));
[INFO] [stderr]     |     ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:143:7
[INFO] [stderr]     |
[INFO] [stderr] 143 |       try!(f.write_str(" ("));
[INFO] [stderr]     |       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:144:7
[INFO] [stderr]     |
[INFO] [stderr] 144 |       try!(f.write_str(self.detail.as_ref()));
[INFO] [stderr]     |       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:145:7
[INFO] [stderr]     |
[INFO] [stderr] 145 |       try!(f.write_str(")"));
[INFO] [stderr]     |       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     try!(f.write_str(self.kind.as_str()));
[INFO] [stderr]     |     ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:39:21
[INFO] [stderr]     |
[INFO] [stderr] 39  |             let lib = try!(open_lib(&[$($lib_name),*]));
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] ...
[INFO] [stderr] 178 | / udev_link! { Udev, ["libudev.so", "libudev.so.1"],
[INFO] [stderr] 179 | |     pub fn udev_ref(udev: *mut udev) -> *mut udev,
[INFO] [stderr] 180 | |     pub fn udev_unref(udev: *mut udev) -> *mut udev,
[INFO] [stderr] 181 | |     pub fn udev_new() -> *mut udev,
[INFO] [stderr] ...   |
[INFO] [stderr] 268 | |     pub fn udev_util_encode_string(str: *const c_char, str_enc: *mut c_char, len: size_t) -> c_int,
[INFO] [stderr] 269 | | }
[INFO] [stderr]     | |_- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:40:28
[INFO] [stderr]     |
[INFO] [stderr] 40  |             $(let $fn_name = try!(get_sym(&lib, stringify!($fn_name)));)*
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] ...
[INFO] [stderr] 178 | / udev_link! { Udev, ["libudev.so", "libudev.so.1"],
[INFO] [stderr] 179 | |     pub fn udev_ref(udev: *mut udev) -> *mut udev,
[INFO] [stderr] 180 | |     pub fn udev_unref(udev: *mut udev) -> *mut udev,
[INFO] [stderr] 181 | |     pub fn udev_new() -> *mut udev,
[INFO] [stderr] ...   |
[INFO] [stderr] 268 | |     pub fn udev_util_encode_string(str: *const c_char, str_enc: *mut c_char, len: size_t) -> c_int,
[INFO] [stderr] 269 | | }
[INFO] [stderr]     | |_- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:143:7
[INFO] [stderr]     |
[INFO] [stderr] 143 |       try!(f.write_str(" ("));
[INFO] [stderr]     |       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:144:7
[INFO] [stderr]     |
[INFO] [stderr] 144 |       try!(f.write_str(self.detail.as_ref()));
[INFO] [stderr]     |       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:145:7
[INFO] [stderr]     |
[INFO] [stderr] 145 |       try!(f.write_str(")"));
[INFO] [stderr]     |       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:39:21
[INFO] [stderr]     |
[INFO] [stderr] 39  |             let lib = try!(open_lib(&[$($lib_name),*]));
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] ...
[INFO] [stderr] 178 | / udev_link! { Udev, ["libudev.so", "libudev.so.1"],
[INFO] [stderr] 179 | |     pub fn udev_ref(udev: *mut udev) -> *mut udev,
[INFO] [stderr] 180 | |     pub fn udev_unref(udev: *mut udev) -> *mut udev,
[INFO] [stderr] 181 | |     pub fn udev_new() -> *mut udev,
[INFO] [stderr] ...   |
[INFO] [stderr] 268 | |     pub fn udev_util_encode_string(str: *const c_char, str_enc: *mut c_char, len: size_t) -> c_int,
[INFO] [stderr] 269 | | }
[INFO] [stderr]     | |_- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/lib.rs:40:28
[INFO] [stderr]     |
[INFO] [stderr] 40  |             $(let $fn_name = try!(get_sym(&lib, stringify!($fn_name)));)*
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] ...
[INFO] [stderr] 178 | / udev_link! { Udev, ["libudev.so", "libudev.so.1"],
[INFO] [stderr] 179 | |     pub fn udev_ref(udev: *mut udev) -> *mut udev,
[INFO] [stderr] 180 | |     pub fn udev_unref(udev: *mut udev) -> *mut udev,
[INFO] [stderr] 181 | |     pub fn udev_new() -> *mut udev,
[INFO] [stderr] ...   |
[INFO] [stderr] 268 | |     pub fn udev_util_encode_string(str: *const c_char, str_enc: *mut c_char, len: size_t) -> c_int,
[INFO] [stderr] 269 | | }
[INFO] [stderr]     | |_- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/udev_dl-d06b36d4369e8db0
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests udev-dl
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "8a82b5e1f208a7f6fb4164ff125e1b11c35d3f999066c50591fd279bfa7a38d6"`
[INFO] running `"docker" "rm" "-f" "8a82b5e1f208a7f6fb4164ff125e1b11c35d3f999066c50591fd279bfa7a38d6"`
[INFO] [stdout] 8a82b5e1f208a7f6fb4164ff125e1b11c35d3f999066c50591fd279bfa7a38d6