[INFO] updating cached repository snaar/drat
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/snaar/drat
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/snaar/drat" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/snaar/drat"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/snaar/drat'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/snaar/drat" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/snaar/drat"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/snaar/drat'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6fc781000a3d3f396d83643ccd64059e69a5ef52
[INFO] sha for GitHub repo snaar/drat: 6fc781000a3d3f396d83643ccd64059e69a5ef52
[INFO] validating manifest of snaar/drat on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of snaar/drat on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing snaar/drat
[INFO] finished frobbing snaar/drat
[INFO] frobbed toml for snaar/drat written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/snaar/drat/Cargo.toml
[INFO] started frobbing snaar/drat
[INFO] finished frobbing snaar/drat
[INFO] frobbed toml for snaar/drat written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/snaar/drat/Cargo.toml
[INFO] crate snaar/drat has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing snaar/drat against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-3/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/snaar/drat:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "build" "--frozen"`
[INFO] [stdout] 97d6dcca72d240c287d8e40723a26e659947aabc9ec180fd9c0d8cbdcd97dc95
[INFO] running `"docker" "start" "-a" "97d6dcca72d240c287d8e40723a26e659947aabc9ec180fd9c0d8cbdcd97dc95"`
[INFO] [stderr]    Compiling pkg-config v0.3.13
[INFO] [stderr]    Compiling try-lock v0.1.0
[INFO] [stderr]    Compiling lzf v0.3.1
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling crossbeam-utils v0.3.2
[INFO] [stderr]    Compiling log v0.4.3
[INFO] [stderr]    Compiling encoding_rs v0.7.2
[INFO] [stderr]    Compiling tokio-executor v0.1.3
[INFO] [stderr]    Compiling tokio-service v0.1.0
[INFO] [stderr]    Compiling relay v0.1.1
[INFO] [stderr]    Compiling bytes v0.4.9
[INFO] [stderr]    Compiling uuid v0.6.5
[INFO] [stderr]    Compiling csv-core v0.1.4
[INFO] [stderr]    Compiling mio v0.6.15
[INFO] [stderr]    Compiling want v0.0.4
[INFO] [stderr]    Compiling tokio-timer v0.2.5
[INFO] [stderr]    Compiling openssl-sys v0.9.35
[INFO] [stderr]    Compiling crossbeam-epoch v0.4.3
[INFO] [stderr]    Compiling serde_urlencoded v0.5.2
[INFO] [stderr]    Compiling libflate v0.1.16
[INFO] [stderr]    Compiling csv v1.0.0
[INFO] [stderr]    Compiling tokio-io v0.1.7
[INFO] [stderr]    Compiling crossbeam-deque v0.3.1
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]    Compiling tokio-threadpool v0.1.5
[INFO] [stderr]    Compiling tokio-codec v0.1.0
[INFO] [stderr]    Compiling tokio-reactor v0.1.3
[INFO] [stderr]    Compiling tokio-udp v0.1.1
[INFO] [stderr]    Compiling tokio-tcp v0.1.1
[INFO] [stderr]    Compiling tokio-fs v0.1.3
[INFO] [stderr]    Compiling tokio v0.1.7
[INFO] [stderr]    Compiling native-tls v0.1.5
[INFO] [stderr]    Compiling tokio-core v0.1.17
[INFO] [stderr]    Compiling tokio-tls v0.1.4
[INFO] [stderr]    Compiling hyper v0.11.27
[INFO] [stderr]    Compiling hyper-tls v0.1.4
[INFO] [stderr]    Compiling reqwest v0.8.7
[INFO] [stderr]    Compiling drat v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `next_row` is never read
[INFO] [stderr]   --> src/file_record.rs:59:17
[INFO] [stderr]    |
[INFO] [stderr] 59 |         let mut next_row = None;
[INFO] [stderr]    |                 ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `magic_num`
[INFO] [stderr]   --> src/read/dc_reader.rs:24:13
[INFO] [stderr]    |
[INFO] [stderr] 24 |         let magic_num = reader.read_u64::<BigEndian>().unwrap();
[INFO] [stderr]    |             ^^^^^^^^^ help: consider prefixing with an underscore: `_magic_num`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `version`
[INFO] [stderr]   --> src/read/dc_reader.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let version = reader.read_u16::<BigEndian>().unwrap();
[INFO] [stderr]    |             ^^^^^^^ help: consider prefixing with an underscore: `_version`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `delimiter`
[INFO] [stderr]   --> src/config.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn delimiter(&self) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `timestamp_column`
[INFO] [stderr]   --> src/file_record.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     timestamp_column: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `map_field_string`
[INFO] [stderr]   --> src/read/dc_reader.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     map_field_string: HashMap<String, FieldType>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `display_hint`
[INFO] [stderr]   --> src/read/types.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     display_hint: i32, // -1: no hint, 0: timestamp
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_display_hint`
[INFO] [stderr]   --> src/read/types.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     pub fn get_display_hint(&self) -> i32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::borrow::ToOwned::to_owned` that must be used
[INFO] [stderr]   --> src/args.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |             inputs_clone.push("-").to_owned(); // stdin
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: cloning is often expensive and is not expected to have side effects
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/read/dc_reader.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 |             reader.read_u8();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/write/csv_sink.rs:55:20
[INFO] [stderr]    |
[INFO] [stderr] 55 |             else { write!(self.writer, ","); } //TODO figure out how to print single char without buffer
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/write/csv_sink.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |         self.writer.write(b"\n");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 15s
[INFO] running `"docker" "inspect" "97d6dcca72d240c287d8e40723a26e659947aabc9ec180fd9c0d8cbdcd97dc95"`
[INFO] running `"docker" "rm" "-f" "97d6dcca72d240c287d8e40723a26e659947aabc9ec180fd9c0d8cbdcd97dc95"`
[INFO] [stdout] 97d6dcca72d240c287d8e40723a26e659947aabc9ec180fd9c0d8cbdcd97dc95
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-3/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/snaar/drat:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] ffa6787b79d1983c8e8f0d9f32edbef5de96610598cc0ef121442398d60374fb
[INFO] running `"docker" "start" "-a" "ffa6787b79d1983c8e8f0d9f32edbef5de96610598cc0ef121442398d60374fb"`
[INFO] [stderr]    Compiling drat v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `next_row` is never read
[INFO] [stderr]   --> src/file_record.rs:59:17
[INFO] [stderr]    |
[INFO] [stderr] 59 |         let mut next_row = None;
[INFO] [stderr]    |                 ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `magic_num`
[INFO] [stderr]   --> src/read/dc_reader.rs:24:13
[INFO] [stderr]    |
[INFO] [stderr] 24 |         let magic_num = reader.read_u64::<BigEndian>().unwrap();
[INFO] [stderr]    |             ^^^^^^^^^ help: consider prefixing with an underscore: `_magic_num`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `version`
[INFO] [stderr]   --> src/read/dc_reader.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |         let version = reader.read_u16::<BigEndian>().unwrap();
[INFO] [stderr]    |             ^^^^^^^ help: consider prefixing with an underscore: `_version`
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `delimiter`
[INFO] [stderr]   --> src/config.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     pub fn delimiter(&self) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `timestamp_column`
[INFO] [stderr]   --> src/file_record.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     timestamp_column: usize,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `map_field_string`
[INFO] [stderr]   --> src/read/dc_reader.rs:18:5
[INFO] [stderr]    |
[INFO] [stderr] 18 |     map_field_string: HashMap<String, FieldType>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `display_hint`
[INFO] [stderr]   --> src/read/types.rs:50:5
[INFO] [stderr]    |
[INFO] [stderr] 50 |     display_hint: i32, // -1: no hint, 0: timestamp
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_display_hint`
[INFO] [stderr]   --> src/read/types.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     pub fn get_display_hint(&self) -> i32 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::borrow::ToOwned::to_owned` that must be used
[INFO] [stderr]   --> src/args.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |             inputs_clone.push("-").to_owned(); // stdin
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: cloning is often expensive and is not expected to have side effects
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/read/dc_reader.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 |             reader.read_u8();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/write/csv_sink.rs:55:20
[INFO] [stderr]    |
[INFO] [stderr] 55 |             else { write!(self.writer, ","); } //TODO figure out how to print single char without buffer
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/write/csv_sink.rs:59:9
[INFO] [stderr]    |
[INFO] [stderr] 59 |         self.writer.write(b"\n");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.40s
[INFO] running `"docker" "inspect" "ffa6787b79d1983c8e8f0d9f32edbef5de96610598cc0ef121442398d60374fb"`
[INFO] running `"docker" "rm" "-f" "ffa6787b79d1983c8e8f0d9f32edbef5de96610598cc0ef121442398d60374fb"`
[INFO] [stdout] ffa6787b79d1983c8e8f0d9f32edbef5de96610598cc0ef121442398d60374fb
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-3/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/snaar/drat:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen"`
[INFO] [stdout] 26864cd17b8d8385c91c36025fe9d7be45f17ac144696c5be9583fd036ccaf5a
[INFO] running `"docker" "start" "-a" "26864cd17b8d8385c91c36025fe9d7be45f17ac144696c5be9583fd036ccaf5a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.22s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/drat-2dc0040501c78a8f
[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" "26864cd17b8d8385c91c36025fe9d7be45f17ac144696c5be9583fd036ccaf5a"`
[INFO] running `"docker" "rm" "-f" "26864cd17b8d8385c91c36025fe9d7be45f17ac144696c5be9583fd036ccaf5a"`
[INFO] [stdout] 26864cd17b8d8385c91c36025fe9d7be45f17ac144696c5be9583fd036ccaf5a