[INFO] crate slog-serde 1.0.0-alpha9 is already in cache
[INFO] testing slog-serde-1.0.0-alpha9 against master#28742a1146f10a4f09369baad027a464acb7a766 for pr-71274
[INFO] extracting crate slog-serde 1.0.0-alpha9 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate slog-serde 1.0.0-alpha9 on toolchain 28742a1146f10a4f09369baad027a464acb7a766
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate slog-serde 1.0.0-alpha9
[INFO] finished tweaking crates.io crate slog-serde 1.0.0-alpha9
[INFO] tweaked toml for crates.io crate slog-serde 1.0.0-alpha9 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+28742a1146f10a4f09369baad027a464acb7a766" "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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=forbid" "-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" "+28742a1146f10a4f09369baad027a464acb7a766" "build" "--frozen"`
[INFO] [stdout] 48b98130a464cd8f06180445cc7884d8ba81fcbe5e72640669fc0f98b22de910
[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" "48b98130a464cd8f06180445cc7884d8ba81fcbe5e72640669fc0f98b22de910"`
[INFO] [stderr]    Compiling serde v0.8.23
[INFO] [stderr]    Compiling slog v1.7.1
[INFO] [stderr]    Compiling slog-serde v1.0.0-alpha9 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> lib.rs:37:25
[INFO] [stderr]    |
[INFO] [stderr] 37 |         let map_state = try!(
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 69 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 73 |         impl_m!(self, key, ())
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 77 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 82 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 86 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 89 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 92 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 95 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 98 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 101 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 104 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 107 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 110 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 113 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 116 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 119 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 122 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 133 |                     impl_m!(self, key, &*buf)
[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: unused `#[macro_use]` import
[INFO] [stderr]  --> lib.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 20 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.43s
[INFO] running `"docker" "inspect" "48b98130a464cd8f06180445cc7884d8ba81fcbe5e72640669fc0f98b22de910"`
[INFO] running `"docker" "rm" "-f" "48b98130a464cd8f06180445cc7884d8ba81fcbe5e72640669fc0f98b22de910"`
[INFO] [stdout] 48b98130a464cd8f06180445cc7884d8ba81fcbe5e72640669fc0f98b22de910
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=forbid" "-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" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d9fddd236450f4d9ad7c110a1a0098c5e021dd5c55abb2d3f94b7b595918b4b9
[INFO] running `"docker" "start" "-a" "d9fddd236450f4d9ad7c110a1a0098c5e021dd5c55abb2d3f94b7b595918b4b9"`
[INFO] [stderr]    Compiling slog-serde v1.0.0-alpha9 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> lib.rs:37:25
[INFO] [stderr]    |
[INFO] [stderr] 37 |         let map_state = try!(
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 69 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 73 |         impl_m!(self, key, ())
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 77 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 82 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 86 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 89 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 92 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 95 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 98 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 101 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 104 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 107 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 110 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 113 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 116 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 119 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 122 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 133 |                     impl_m!(self, key, &*buf)
[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: unused `#[macro_use]` import
[INFO] [stderr]  --> lib.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 20 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> lib.rs:37:25
[INFO] [stderr]    |
[INFO] [stderr] 37 |         let map_state = try!(
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 69 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 73 |         impl_m!(self, key, ())
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 77 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 82 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 86 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 89 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 92 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 95 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 98 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 101 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 104 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 107 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 110 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 113 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 116 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 119 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 122 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 133 |                     impl_m!(self, key, &*buf)
[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: unused `#[macro_use]` import
[INFO] [stderr]  --> lib.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 20 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.97s
[INFO] running `"docker" "inspect" "d9fddd236450f4d9ad7c110a1a0098c5e021dd5c55abb2d3f94b7b595918b4b9"`
[INFO] running `"docker" "rm" "-f" "d9fddd236450f4d9ad7c110a1a0098c5e021dd5c55abb2d3f94b7b595918b4b9"`
[INFO] [stdout] d9fddd236450f4d9ad7c110a1a0098c5e021dd5c55abb2d3f94b7b595918b4b9
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=forbid" "-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" "+28742a1146f10a4f09369baad027a464acb7a766" "test" "--frozen"`
[INFO] [stdout] e6404dd4fac6d028cab95536e8e24a4579751dc95198e40e116dda8ca5eb4aba
[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" "e6404dd4fac6d028cab95536e8e24a4579751dc95198e40e116dda8ca5eb4aba"`
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> lib.rs:37:25
[INFO] [stderr]    |
[INFO] [stderr] 37 |         let map_state = try!(
[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]   --> lib.rs:37:25
[INFO] [stderr]    |
[INFO] [stderr] 37 |         let map_state = try!(
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 69 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 69 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 73 |         impl_m!(self, key, ())
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 73 |         impl_m!(self, key, ())
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 77 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 77 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 82 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 82 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 86 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 86 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 89 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 89 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 92 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 92 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 95 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 98 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 101 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 104 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 107 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 110 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 113 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 116 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 119 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 122 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 133 |                     impl_m!(self, key, &*buf)
[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: unused `#[macro_use]` import
[INFO] [stderr]  --> lib.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 20 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 95 |         impl_m!(self, key, val)
[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]   --> lib.rs:58:9
[INFO] [stderr]    |
[INFO] [stderr] 58 |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]    |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 98 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 101 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 104 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 107 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 110 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 113 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 116 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 119 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 122 |         impl_m!(self, key, val)
[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]    --> lib.rs:58:9
[INFO] [stderr]     |
[INFO] [stderr] 58  |         try!(serde::Serializer::serialize_map_key(&mut $s.ser, &mut $s.map_state, $key)
[INFO] [stderr]     |         ^^^
[INFO] [stderr] ...
[INFO] [stderr] 133 |                     impl_m!(self, key, &*buf)
[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: unused `#[macro_use]` import
[INFO] [stderr]  --> lib.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 20 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/slog_serde-283b4b4f785a1543
[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 slog-serde
[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" "e6404dd4fac6d028cab95536e8e24a4579751dc95198e40e116dda8ca5eb4aba"`
[INFO] running `"docker" "rm" "-f" "e6404dd4fac6d028cab95536e8e24a4579751dc95198e40e116dda8ca5eb4aba"`
[INFO] [stdout] e6404dd4fac6d028cab95536e8e24a4579751dc95198e40e116dda8ca5eb4aba