[INFO] crate ktrace 0.1.0 is already in cache
[INFO] testing ktrace-0.1.0 against try#41997647ba6a77908f6ef64401414feb00bccf16 for pr-71274
[INFO] extracting crate ktrace 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate ktrace 0.1.0 on toolchain 41997647ba6a77908f6ef64401414feb00bccf16
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate ktrace 0.1.0
[INFO] finished tweaking crates.io crate ktrace 0.1.0
[INFO] tweaked toml for crates.io crate ktrace 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+41997647ba6a77908f6ef64401414feb00bccf16" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "build" "--frozen"`
[INFO] [stdout] 2346fed4d5e9188fbdf618dad2c1b1afea8bf3fc440f595ffc2200cbb43ccd97
[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" "2346fed4d5e9188fbdf618dad2c1b1afea8bf3fc440f595ffc2200cbb43ccd97"`
[INFO] [stderr]    Compiling byteorder v0.5.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling nix v0.7.0
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling ktrace v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/header.rs:57:26
[INFO] [stderr]    |
[INFO] [stderr] 57 |             record_type: try![RecordType::from_u16(raw.ktr_type)],
[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/header.rs:59:22
[INFO] [stderr]    |
[INFO] [stderr] 59 |             command: try![command].to_string(),
[INFO] [stderr]    |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/record.rs:243:30
[INFO] [stderr]     |
[INFO] [stderr] 243 |                     message: try! {
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/record.rs:255:27
[INFO] [stderr]     |
[INFO] [stderr] 255 |                 let nul = try! {
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/record.rs:262:27
[INFO] [stderr]     |
[INFO] [stderr] 262 |                     name: try! {
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/record.rs:310:33
[INFO] [stderr]     |
[INFO] [stderr] 310 |                 let fail_type = try! {
[INFO] [stderr]     |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:46:22
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let header = try![Header::parse(&data)];
[INFO] [stderr]    |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |         try![r.read_exact(&mut data).map_err(Error::IO)];
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:30:29
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn parse<E>(mut r: &mut io::Read) -> Result<Vec<(Header,Result<Record>)>>
[INFO] [stderr]    |                             ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:30:17
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn parse<E>(mut r: &mut io::Read) -> Result<Vec<(Header,Result<Record>)>>
[INFO] [stderr]    |                 ----^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.99s
[INFO] running `"docker" "inspect" "2346fed4d5e9188fbdf618dad2c1b1afea8bf3fc440f595ffc2200cbb43ccd97"`
[INFO] running `"docker" "rm" "-f" "2346fed4d5e9188fbdf618dad2c1b1afea8bf3fc440f595ffc2200cbb43ccd97"`
[INFO] [stdout] 2346fed4d5e9188fbdf618dad2c1b1afea8bf3fc440f595ffc2200cbb43ccd97
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "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] 83df61cf86322c37a5a325adf4a9592b7bcf76d76eae9acc3ca89c7280fbc56f
[INFO] running `"docker" "start" "-a" "83df61cf86322c37a5a325adf4a9592b7bcf76d76eae9acc3ca89c7280fbc56f"`
[INFO] [stderr]    Compiling ktrace v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/header.rs:57:26
[INFO] [stderr]    |
[INFO] [stderr] 57 |             record_type: try![RecordType::from_u16(raw.ktr_type)],
[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/header.rs:59:22
[INFO] [stderr]    |
[INFO] [stderr] 59 |             command: try![command].to_string(),
[INFO] [stderr]    |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/record.rs:243:30
[INFO] [stderr]     |
[INFO] [stderr] 243 |                     message: try! {
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/record.rs:255:27
[INFO] [stderr]     |
[INFO] [stderr] 255 |                 let nul = try! {
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/record.rs:262:27
[INFO] [stderr]     |
[INFO] [stderr] 262 |                     name: try! {
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/record.rs:310:33
[INFO] [stderr]     |
[INFO] [stderr] 310 |                 let fail_type = try! {
[INFO] [stderr]     |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:46:22
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let header = try![Header::parse(&data)];
[INFO] [stderr]    |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |         try![r.read_exact(&mut data).map_err(Error::IO)];
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:30:29
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn parse<E>(mut r: &mut io::Read) -> Result<Vec<(Header,Result<Record>)>>
[INFO] [stderr]    |                             ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:30:17
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn parse<E>(mut r: &mut io::Read) -> Result<Vec<(Header,Result<Record>)>>
[INFO] [stderr]    |                 ----^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/header.rs:57:26
[INFO] [stderr]    |
[INFO] [stderr] 57 |             record_type: try![RecordType::from_u16(raw.ktr_type)],
[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/header.rs:59:22
[INFO] [stderr]    |
[INFO] [stderr] 59 |             command: try![command].to_string(),
[INFO] [stderr]    |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/record.rs:243:30
[INFO] [stderr]     |
[INFO] [stderr] 243 |                     message: try! {
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/record.rs:255:27
[INFO] [stderr]     |
[INFO] [stderr] 255 |                 let nul = try! {
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/record.rs:262:27
[INFO] [stderr]     |
[INFO] [stderr] 262 |                     name: try! {
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/record.rs:310:33
[INFO] [stderr]     |
[INFO] [stderr] 310 |                 let fail_type = try! {
[INFO] [stderr]     |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:46:22
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let header = try![Header::parse(&data)];
[INFO] [stderr]    |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |         try![r.read_exact(&mut data).map_err(Error::IO)];
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:30:29
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn parse<E>(mut r: &mut io::Read) -> Result<Vec<(Header,Result<Record>)>>
[INFO] [stderr]    |                             ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:30:17
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn parse<E>(mut r: &mut io::Read) -> Result<Vec<(Header,Result<Record>)>>
[INFO] [stderr]    |                 ----^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.63s
[INFO] running `"docker" "inspect" "83df61cf86322c37a5a325adf4a9592b7bcf76d76eae9acc3ca89c7280fbc56f"`
[INFO] running `"docker" "rm" "-f" "83df61cf86322c37a5a325adf4a9592b7bcf76d76eae9acc3ca89c7280fbc56f"`
[INFO] [stdout] 83df61cf86322c37a5a325adf4a9592b7bcf76d76eae9acc3ca89c7280fbc56f
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+41997647ba6a77908f6ef64401414feb00bccf16" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 16e70c70ab4dc0f3057f7bf939add93c404088d787055c578558f8cd053e8c04
[INFO] running `"docker" "start" "-a" "16e70c70ab4dc0f3057f7bf939add93c404088d787055c578558f8cd053e8c04"`
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/header.rs:57:26
[INFO] [stderr]    |
[INFO] [stderr] 57 |             record_type: try![RecordType::from_u16(raw.ktr_type)],
[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/header.rs:59:22
[INFO] [stderr]    |
[INFO] [stderr] 59 |             command: try![command].to_string(),
[INFO] [stderr]    |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/record.rs:243:30
[INFO] [stderr]     |
[INFO] [stderr] 243 |                     message: try! {
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/record.rs:255:27
[INFO] [stderr]     |
[INFO] [stderr] 255 |                 let nul = try! {
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/record.rs:262:27
[INFO] [stderr]     |
[INFO] [stderr] 262 |                     name: try! {
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/record.rs:310:33
[INFO] [stderr]     |
[INFO] [stderr] 310 |                 let fail_type = try! {
[INFO] [stderr]     |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:46:22
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let header = try![Header::parse(&data)];
[INFO] [stderr]    |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |         try![r.read_exact(&mut data).map_err(Error::IO)];
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:30:29
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn parse<E>(mut r: &mut io::Read) -> Result<Vec<(Header,Result<Record>)>>
[INFO] [stderr]    |                             ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:30:17
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn parse<E>(mut r: &mut io::Read) -> Result<Vec<(Header,Result<Record>)>>
[INFO] [stderr]    |                 ----^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/header.rs:57:26
[INFO] [stderr]    |
[INFO] [stderr] 57 |             record_type: try![RecordType::from_u16(raw.ktr_type)],
[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/header.rs:59:22
[INFO] [stderr]    |
[INFO] [stderr] 59 |             command: try![command].to_string(),
[INFO] [stderr]    |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/record.rs:243:30
[INFO] [stderr]     |
[INFO] [stderr] 243 |                     message: try! {
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/record.rs:255:27
[INFO] [stderr]     |
[INFO] [stderr] 255 |                 let nul = try! {
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/record.rs:262:27
[INFO] [stderr]     |
[INFO] [stderr] 262 |                     name: try! {
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/record.rs:310:33
[INFO] [stderr]     |
[INFO] [stderr] 310 |                 let fail_type = try! {
[INFO] [stderr]     |                                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:46:22
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let header = try![Header::parse(&data)];
[INFO] [stderr]    |                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/lib.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |         try![r.read_exact(&mut data).map_err(Error::IO)];
[INFO] [stderr]    |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/lib.rs:30:29
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn parse<E>(mut r: &mut io::Read) -> Result<Vec<(Header,Result<Record>)>>
[INFO] [stderr]    |                             ^^^^^^^^ help: use `dyn`: `dyn io::Read`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/lib.rs:30:17
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn parse<E>(mut r: &mut io::Read) -> Result<Vec<(Header,Result<Record>)>>
[INFO] [stderr]    |                 ----^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 10 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.26s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/ktrace-c81d62caf0e226b6
[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]      Running /opt/rustwide/target/debug/deps/main-241afd1c0364b5ab
[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 ktrace
[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" "16e70c70ab4dc0f3057f7bf939add93c404088d787055c578558f8cd053e8c04"`
[INFO] running `"docker" "rm" "-f" "16e70c70ab4dc0f3057f7bf939add93c404088d787055c578558f8cd053e8c04"`
[INFO] [stdout] 16e70c70ab4dc0f3057f7bf939add93c404088d787055c578558f8cd053e8c04