[INFO] fetching crate wping 0.3.0...
[INFO] testing wping-0.3.0 against 1.47.0 for beta-1.48-1
[INFO] extracting crate wping 0.3.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate wping 0.3.0 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wping 0.3.0
[INFO] finished tweaking crates.io crate wping 0.3.0
[INFO] tweaked toml for crates.io crate wping 0.3.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 93803496954ff7598960386986c81e14100d8b605df7b50febf26c16b5462430
[INFO] running `Command { std: "docker" "start" "-a" "93803496954ff7598960386986c81e14100d8b605df7b50febf26c16b5462430", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93803496954ff7598960386986c81e14100d8b605df7b50febf26c16b5462430", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93803496954ff7598960386986c81e14100d8b605df7b50febf26c16b5462430", kill_on_drop: false }`
[INFO] [stdout] 93803496954ff7598960386986c81e14100d8b605df7b50febf26c16b5462430
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 36bc92e4c9bee01e47553397b1d7c4c97ae354c1ba57d9a4146f6bd514c1782c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "36bc92e4c9bee01e47553397b1d7c4c97ae354c1ba57d9a4146f6bd514c1782c", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]    Compiling pnet_base v0.26.0
[INFO] [stderr]    Compiling pnet_macros_support v0.1.1
[INFO] [stderr]    Compiling argparse v0.2.2
[INFO] [stderr]    Compiling syntex_pos v0.42.0
[INFO] [stderr]    Compiling resolve v0.1.2
[INFO] [stderr]    Compiling chrono v0.3.0
[INFO] [stderr]    Compiling pnet_macros_support v0.26.0
[INFO] [stderr]    Compiling syntex_errors v0.42.0
[INFO] [stderr]    Compiling syntex_syntax v0.42.0
[INFO] [stderr]    Compiling syntex v0.42.2
[INFO] [stderr]    Compiling pnet_macros v0.15.0
[INFO] [stderr]    Compiling pnet v0.16.0
[INFO] [stderr]    Compiling wping v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:437:25
[INFO] [stdout]     |
[INFO] [stdout] 437 |             let addrs = try!(resolve_host(&s).map_err(|e| String::from(e.description())));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/columnar.rs:67:50
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn format(&'a self, values : Vec<Option<&Display>>) -> String {
[INFO] [stdout]    |                                                  ^^^^^^^ help: use `dyn`: `dyn Display`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/columnar.rs:72:50
[INFO] [stdout]    |
[INFO] [stdout] 72 |                  (col, v) : (&'a Column, Option<&Display>)| {
[INFO] [stdout]    |                                                  ^^^^^^^ help: use `dyn`: `dyn Display`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:155:77
[INFO] [stdout]     |
[INFO] [stdout] 155 | fn send_ping (mut tx : TransportSender, dst : Ipv4Addr, len : usize) -> Box<FnMut(u16) -> ()> {
[INFO] [stdout]     |                                                                             ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(u16) -> ()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:404:30
[INFO] [stdout]     |
[INFO] [stdout] 404 | fn do_probe(probe : &mut Box<FnMut(u16) -> ()>, stats: &mut Stats,
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(u16) -> ()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:500:60
[INFO] [stdout]     |
[INFO] [stdout] 500 | fn to_display<T : fmt::Display>(v : Option<&T>) -> Option<&fmt::Display> {
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:501:22
[INFO] [stdout]     |
[INFO] [stdout] 501 |     v.map (|v| v as &fmt::Display)
[INFO] [stdout]     |                      ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:508:39
[INFO] [stdout]     |
[INFO] [stdout] 508 |     let seq = resp.map(|r| &r.seq as &fmt::Display);
[INFO] [stdout]     |                                       ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:509:46
[INFO] [stdout]     |
[INFO] [stdout] 509 |     let nbytes = resp.map (|r| &r.nbytes as &fmt::Display);
[INFO] [stdout]     |                                              ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:510:39
[INFO] [stdout]     |
[INFO] [stdout] 510 |     let ttl = resp.map(|r| &r.ttl as &fmt::Display);
[INFO] [stdout]     |                                       ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:437:74
[INFO] [stdout]     |
[INFO] [stdout] 437 |             let addrs = try!(resolve_host(&s).map_err(|e| String::from(e.description())));
[INFO] [stdout]     |                                                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:115:9
[INFO] [stdout]     |
[INFO] [stdout] 115 |     let mut ipv4_payload = ipv4.payload_mut();
[INFO] [stdout]     |         ----^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stdout]    --> src/main.rs:339:44
[INFO] [stdout]     |
[INFO] [stdout] 339 |         for (i, unit) in ["s", "ms", "us"].into_iter().enumerate() {
[INFO] [stdout]     |                                            ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 56.21s
[INFO] running `Command { std: "docker" "inspect" "36bc92e4c9bee01e47553397b1d7c4c97ae354c1ba57d9a4146f6bd514c1782c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "36bc92e4c9bee01e47553397b1d7c4c97ae354c1ba57d9a4146f6bd514c1782c", kill_on_drop: false }`
[INFO] [stdout] 36bc92e4c9bee01e47553397b1d7c4c97ae354c1ba57d9a4146f6bd514c1782c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6827f968bdcc43d6b1ec2d0f9e0824f2d2881120b4566c5a6b6819da0bcb10ed
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6827f968bdcc43d6b1ec2d0f9e0824f2d2881120b4566c5a6b6819da0bcb10ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling wping v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/main.rs:437:25
[INFO] [stdout]     |
[INFO] [stdout] 437 |             let addrs = try!(resolve_host(&s).map_err(|e| String::from(e.description())));
[INFO] [stdout]     |                         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/columnar.rs:67:50
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn format(&'a self, values : Vec<Option<&Display>>) -> String {
[INFO] [stdout]    |                                                  ^^^^^^^ help: use `dyn`: `dyn Display`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/columnar.rs:72:50
[INFO] [stdout]    |
[INFO] [stdout] 72 |                  (col, v) : (&'a Column, Option<&Display>)| {
[INFO] [stdout]    |                                                  ^^^^^^^ help: use `dyn`: `dyn Display`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:155:77
[INFO] [stdout]     |
[INFO] [stdout] 155 | fn send_ping (mut tx : TransportSender, dst : Ipv4Addr, len : usize) -> Box<FnMut(u16) -> ()> {
[INFO] [stdout]     |                                                                             ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(u16) -> ()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:404:30
[INFO] [stdout]     |
[INFO] [stdout] 404 | fn do_probe(probe : &mut Box<FnMut(u16) -> ()>, stats: &mut Stats,
[INFO] [stdout]     |                              ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(u16) -> ()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:500:60
[INFO] [stdout]     |
[INFO] [stdout] 500 | fn to_display<T : fmt::Display>(v : Option<&T>) -> Option<&fmt::Display> {
[INFO] [stdout]     |                                                            ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:501:22
[INFO] [stdout]     |
[INFO] [stdout] 501 |     v.map (|v| v as &fmt::Display)
[INFO] [stdout]     |                      ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:508:39
[INFO] [stdout]     |
[INFO] [stdout] 508 |     let seq = resp.map(|r| &r.seq as &fmt::Display);
[INFO] [stdout]     |                                       ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:509:46
[INFO] [stdout]     |
[INFO] [stdout] 509 |     let nbytes = resp.map (|r| &r.nbytes as &fmt::Display);
[INFO] [stdout]     |                                              ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:510:39
[INFO] [stdout]     |
[INFO] [stdout] 510 |     let ttl = resp.map(|r| &r.ttl as &fmt::Display);
[INFO] [stdout]     |                                       ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/main.rs:437:74
[INFO] [stdout]     |
[INFO] [stdout] 437 |             let addrs = try!(resolve_host(&s).map_err(|e| String::from(e.description())));
[INFO] [stdout]     |                                                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:115:9
[INFO] [stdout]     |
[INFO] [stdout] 115 |     let mut ipv4_payload = ipv4.payload_mut();
[INFO] [stdout]     |         ----^^^^^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stdout]    --> src/main.rs:339:44
[INFO] [stdout]     |
[INFO] [stdout] 339 |         for (i, unit) in ["s", "ms", "us"].into_iter().enumerate() {
[INFO] [stdout]     |                                            ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.93s
[INFO] running `Command { std: "docker" "inspect" "6827f968bdcc43d6b1ec2d0f9e0824f2d2881120b4566c5a6b6819da0bcb10ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6827f968bdcc43d6b1ec2d0f9e0824f2d2881120b4566c5a6b6819da0bcb10ed", kill_on_drop: false }`
[INFO] [stdout] 6827f968bdcc43d6b1ec2d0f9e0824f2d2881120b4566c5a6b6819da0bcb10ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 76d6bcb4ca252df5aec60339d498b2f88c3243cf537f8819526a6d2910314170
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "76d6bcb4ca252df5aec60339d498b2f88c3243cf537f8819526a6d2910314170", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/main.rs:437:25
[INFO] [stderr]     |
[INFO] [stderr] 437 |             let addrs = try!(resolve_host(&s).map_err(|e| String::from(e.description())));
[INFO] [stderr]     |                         ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/columnar.rs:67:50
[INFO] [stderr]    |
[INFO] [stderr] 67 |     pub fn format(&'a self, values : Vec<Option<&Display>>) -> String {
[INFO] [stderr]    |                                                  ^^^^^^^ help: use `dyn`: `dyn Display`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/columnar.rs:72:50
[INFO] [stderr]    |
[INFO] [stderr] 72 |                  (col, v) : (&'a Column, Option<&Display>)| {
[INFO] [stderr]    |                                                  ^^^^^^^ help: use `dyn`: `dyn Display`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:155:77
[INFO] [stderr]     |
[INFO] [stderr] 155 | fn send_ping (mut tx : TransportSender, dst : Ipv4Addr, len : usize) -> Box<FnMut(u16) -> ()> {
[INFO] [stderr]     |                                                                             ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(u16) -> ()`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:404:30
[INFO] [stderr]     |
[INFO] [stderr] 404 | fn do_probe(probe : &mut Box<FnMut(u16) -> ()>, stats: &mut Stats,
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(u16) -> ()`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:500:60
[INFO] [stderr]     |
[INFO] [stderr] 500 | fn to_display<T : fmt::Display>(v : Option<&T>) -> Option<&fmt::Display> {
[INFO] [stderr]     |                                                            ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:501:22
[INFO] [stderr]     |
[INFO] [stderr] 501 |     v.map (|v| v as &fmt::Display)
[INFO] [stderr]     |                      ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:508:39
[INFO] [stderr]     |
[INFO] [stderr] 508 |     let seq = resp.map(|r| &r.seq as &fmt::Display);
[INFO] [stderr]     |                                       ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:509:46
[INFO] [stderr]     |
[INFO] [stderr] 509 |     let nbytes = resp.map (|r| &r.nbytes as &fmt::Display);
[INFO] [stderr]     |                                              ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:510:39
[INFO] [stderr]     |
[INFO] [stderr] 510 |     let ttl = resp.map(|r| &r.ttl as &fmt::Display);
[INFO] [stderr]     |                                       ^^^^^^^^^^^^ help: use `dyn`: `dyn fmt::Display`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> src/main.rs:437:74
[INFO] [stderr]     |
[INFO] [stderr] 437 |             let addrs = try!(resolve_host(&s).map_err(|e| String::from(e.description())));
[INFO] [stderr]     |                                                                          ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:115:9
[INFO] [stderr]     |
[INFO] [stderr] 115 |     let mut ipv4_payload = ipv4.payload_mut();
[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: this method call currently resolves to `<&[T; N] as IntoIterator>::into_iter` (due to autoref coercions), but that might change in the future when `IntoIterator` impls for arrays are added.
[INFO] [stderr]    --> src/main.rs:339:44
[INFO] [stderr]     |
[INFO] [stderr] 339 |         for (i, unit) in ["s", "ms", "us"].into_iter().enumerate() {
[INFO] [stderr]     |                                            ^^^^^^^^^ help: use `.iter()` instead of `.into_iter()` to avoid ambiguity: `iter`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stderr] 
[INFO] [stderr] warning: 13 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.20s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/wping-a46cf228cc0ec048
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test_nanoseconds_display ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "76d6bcb4ca252df5aec60339d498b2f88c3243cf537f8819526a6d2910314170", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76d6bcb4ca252df5aec60339d498b2f88c3243cf537f8819526a6d2910314170", kill_on_drop: false }`
[INFO] [stdout] 76d6bcb4ca252df5aec60339d498b2f88c3243cf537f8819526a6d2910314170
