[INFO] cloning repository https://github.com/aoikonomopoulos/wping
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aoikonomopoulos/wping" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faoikonomopoulos%2Fwping", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faoikonomopoulos%2Fwping'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2d5155803811b50761baa309249aad35a9748aff
[INFO] testing aoikonomopoulos/wping against 1.75.0 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faoikonomopoulos%2Fwping" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aoikonomopoulos/wping on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aoikonomopoulos/wping
[INFO] finished tweaking git repo https://github.com/aoikonomopoulos/wping
[INFO] tweaked toml for git repo https://github.com/aoikonomopoulos/wping written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/aoikonomopoulos/wping already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pnet_macros_support v0.1.1
[INFO] [stderr]   Downloaded resolve v0.1.2
[INFO] [stderr]   Downloaded argparse v0.2.1
[INFO] [stderr]   Downloaded thread_local v0.3.2
[INFO] [stderr]   Downloaded aho-corasick v0.6.1
[INFO] [stderr]   Downloaded pnet_macros v0.13.0
[INFO] [stderr]   Downloaded pnet v0.16.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bbb49be11e2523e723191e8c71a36cb95b83bb8ca01f4ecd22ec7074823b3f8b
[INFO] running `Command { std: "docker" "start" "-a" "bbb49be11e2523e723191e8c71a36cb95b83bb8ca01f4ecd22ec7074823b3f8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bbb49be11e2523e723191e8c71a36cb95b83bb8ca01f4ecd22ec7074823b3f8b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbb49be11e2523e723191e8c71a36cb95b83bb8ca01f4ecd22ec7074823b3f8b", kill_on_drop: false }`
[INFO] [stdout] bbb49be11e2523e723191e8c71a36cb95b83bb8ca01f4ecd22ec7074823b3f8b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bbfd24c44be989f42c98428265d4421559e1769d76deff1715926b098d664574
[INFO] running `Command { std: "docker" "start" "-a" "bbfd24c44be989f42c98428265d4421559e1769d76deff1715926b098d664574", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.20
[INFO] [stderr]    Compiling rustc-serialize v0.3.22
[INFO] [stderr]    Compiling log v0.3.6
[INFO] [stderr]    Compiling num-traits v0.1.36
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling term v0.4.5
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]    Compiling unreachable v0.1.1
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling regex-syntax v0.4.0
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling matches v0.1.4
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling thread-id v3.0.0
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling thread_local v0.3.2
[INFO] [stderr]    Compiling num-integer v0.1.32
[INFO] [stderr]    Compiling aho-corasick v0.6.1
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]    Compiling unicode-bidi v0.2.5
[INFO] [stderr]    Compiling num-iter v0.1.32
[INFO] [stderr]    Compiling unicode-normalization v0.1.4
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling time v0.1.36
[INFO] [stderr]    Compiling pnet_macros_support v0.1.1
[INFO] [stderr]    Compiling regex v0.2.1
[INFO] [stderr]    Compiling argparse v0.2.1
[INFO] [stderr]    Compiling byteorder v1.0.0
[INFO] [stderr]    Compiling idna v0.1.0
[INFO] [stderr]    Compiling resolve v0.1.2
[INFO] [stderr]    Compiling syntex_pos v0.42.0
[INFO] [stderr]    Compiling num-bigint v0.1.35
[INFO] [stderr]    Compiling num-complex v0.1.35
[INFO] [stderr]    Compiling syntex_errors v0.42.0
[INFO] [stderr]    Compiling num-rational v0.1.35
[INFO] [stderr]    Compiling num v0.1.36
[INFO] [stderr]    Compiling syntex_syntax v0.42.0
[INFO] [stderr]    Compiling chrono v0.3.0
[INFO] [stderr]    Compiling syntex v0.42.2
[INFO] [stderr]    Compiling pnet_macros v0.13.0
[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/main.rs:155:77
[INFO] [stdout]     |
[INFO] [stdout] 155 | fn send_ping (mut tx : TransportSender, dst : Ipv4Addr, len : usize) -> Box<FnMut(u16) -> ()> {
[INFO] [stdout]     |                                                                             ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 155 | fn send_ping (mut tx : TransportSender, dst : Ipv4Addr, len : usize) -> Box<dyn FnMut(u16) -> ()> {
[INFO] [stdout]     |                                                                             +++
[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]     |                              ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 404 | fn do_probe(probe : &mut Box<dyn FnMut(u16) -> ()>, stats: &mut Stats,
[INFO] [stdout]     |                              +++
[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]     |                                                            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 500 | fn to_display<T : fmt::Display>(v : Option<&T>) -> Option<&dyn fmt::Display> {
[INFO] [stdout]     |                                                            +++
[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]    |                                                  ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn format(&'a self, values : Vec<Option<&dyn Display>>) -> String {
[INFO] [stdout]    |                                                  +++
[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]    |                                                  ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 72 |                  (col, v) : (&'a Column, Option<&dyn Display>)| {
[INFO] [stdout]    |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `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: 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]     |                      ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 501 |     v.map (|v| v as &dyn fmt::Display)
[INFO] [stdout]     |                      +++
[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]     |                                       ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 508 |     let seq = resp.map(|r| &r.seq as &dyn fmt::Display);
[INFO] [stdout]     |                                       +++
[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]     |                                              ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 509 |     let nbytes = resp.map (|r| &r.nbytes as &dyn fmt::Display);
[INFO] [stdout]     |                                              +++
[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]     |                                       ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 510 |     let ttl = resp.map(|r| &r.ttl as &dyn fmt::Display);
[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 resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/main.rs:339:44
[INFO] [stdout]     |
[INFO] [stdout] 339 |         for (i, unit) in ["s", "ms", "us"].into_iter().enumerate() {
[INFO] [stdout]     |                                            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 339 |         for (i, unit) in ["s", "ms", "us"].iter().enumerate() {
[INFO] [stdout]     |                                            ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 339 |         for (i, unit) in IntoIterator::into_iter(["s", "ms", "us"]).enumerate() {
[INFO] [stdout]     |                          ++++++++++++++++++++++++                 ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.72s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.22
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "bbfd24c44be989f42c98428265d4421559e1769d76deff1715926b098d664574", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbfd24c44be989f42c98428265d4421559e1769d76deff1715926b098d664574", kill_on_drop: false }`
[INFO] [stdout] bbfd24c44be989f42c98428265d4421559e1769d76deff1715926b098d664574
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6bf0d7b1ee042c894d5fffd193b04e36d5e3e8a636fa2008d581f84232dbea8d
[INFO] running `Command { std: "docker" "start" "-a" "6bf0d7b1ee042c894d5fffd193b04e36d5e3e8a636fa2008d581f84232dbea8d", 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/main.rs:155:77
[INFO] [stdout]     |
[INFO] [stdout] 155 | fn send_ping (mut tx : TransportSender, dst : Ipv4Addr, len : usize) -> Box<FnMut(u16) -> ()> {
[INFO] [stdout]     |                                                                             ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 155 | fn send_ping (mut tx : TransportSender, dst : Ipv4Addr, len : usize) -> Box<dyn FnMut(u16) -> ()> {
[INFO] [stdout]     |                                                                             +++
[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]     |                              ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 404 | fn do_probe(probe : &mut Box<dyn FnMut(u16) -> ()>, stats: &mut Stats,
[INFO] [stdout]     |                              +++
[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]     |                                                            ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 500 | fn to_display<T : fmt::Display>(v : Option<&T>) -> Option<&dyn fmt::Display> {
[INFO] [stdout]     |                                                            +++
[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]    |                                                  ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 67 |     pub fn format(&'a self, values : Vec<Option<&dyn Display>>) -> String {
[INFO] [stdout]    |                                                  +++
[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]    |                                                  ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 72 |                  (col, v) : (&'a Column, Option<&dyn Display>)| {
[INFO] [stdout]    |                                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `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: 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]     |                      ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 501 |     v.map (|v| v as &dyn fmt::Display)
[INFO] [stdout]     |                      +++
[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]     |                                       ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 508 |     let seq = resp.map(|r| &r.seq as &dyn fmt::Display);
[INFO] [stdout]     |                                       +++
[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]     |                                              ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 509 |     let nbytes = resp.map (|r| &r.nbytes as &dyn fmt::Display);
[INFO] [stdout]     |                                              +++
[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]     |                                       ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 510 |     let ttl = resp.map(|r| &r.ttl as &dyn fmt::Display);
[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 resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stdout]    --> src/main.rs:339:44
[INFO] [stdout]     |
[INFO] [stdout] 339 |         for (i, unit) in ["s", "ms", "us"].into_iter().enumerate() {
[INFO] [stdout]     |                                            ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stdout]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 339 |         for (i, unit) in ["s", "ms", "us"].iter().enumerate() {
[INFO] [stdout]     |                                            ~~~~
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 339 |         for (i, unit) in IntoIterator::into_iter(["s", "ms", "us"]).enumerate() {
[INFO] [stdout]     |                          ++++++++++++++++++++++++                 ~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.57s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.22
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "6bf0d7b1ee042c894d5fffd193b04e36d5e3e8a636fa2008d581f84232dbea8d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bf0d7b1ee042c894d5fffd193b04e36d5e3e8a636fa2008d581f84232dbea8d", kill_on_drop: false }`
[INFO] [stdout] 6bf0d7b1ee042c894d5fffd193b04e36d5e3e8a636fa2008d581f84232dbea8d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6370d2f00e84607093a5d866e6e8835089d143f07252f2a4a2158d222cad4c0d
[INFO] running `Command { std: "docker" "start" "-a" "6370d2f00e84607093a5d866e6e8835089d143f07252f2a4a2158d222cad4c0d", 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/main.rs:155:77
[INFO] [stderr]     |
[INFO] [stderr] 155 | fn send_ping (mut tx : TransportSender, dst : Ipv4Addr, len : usize) -> Box<FnMut(u16) -> ()> {
[INFO] [stderr]     |                                                                             ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 155 | fn send_ping (mut tx : TransportSender, dst : Ipv4Addr, len : usize) -> Box<dyn FnMut(u16) -> ()> {
[INFO] [stderr]     |                                                                             +++
[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]     |                              ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 404 | fn do_probe(probe : &mut Box<dyn FnMut(u16) -> ()>, stats: &mut Stats,
[INFO] [stderr]     |                              +++
[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]     |                                                            ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 500 | fn to_display<T : fmt::Display>(v : Option<&T>) -> Option<&dyn fmt::Display> {
[INFO] [stderr]     |                                                            +++
[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]    |                                                  ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 67 |     pub fn format(&'a self, values : Vec<Option<&dyn Display>>) -> String {
[INFO] [stderr]    |                                                  +++
[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]    |                                                  ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 72 |                  (col, v) : (&'a Column, Option<&dyn Display>)| {
[INFO] [stderr]    |                                                  +++
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `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: 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]     |                      ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 501 |     v.map (|v| v as &dyn fmt::Display)
[INFO] [stderr]     |                      +++
[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]     |                                       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 508 |     let seq = resp.map(|r| &r.seq as &dyn fmt::Display);
[INFO] [stderr]     |                                       +++
[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]     |                                              ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 509 |     let nbytes = resp.map (|r| &r.nbytes as &dyn fmt::Display);
[INFO] [stderr]     |                                              +++
[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]     |                                       ^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 510 |     let ttl = resp.map(|r| &r.ttl as &dyn fmt::Display);
[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 resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021
[INFO] [stderr]    --> src/main.rs:339:44
[INFO] [stderr]     |
[INFO] [stderr] 339 |         for (i, unit) in ["s", "ms", "us"].into_iter().enumerate() {
[INFO] [stderr]     |                                            ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this changes meaning in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/IntoIterator-for-arrays.html>
[INFO] [stderr]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stderr] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stderr]     |
[INFO] [stderr] 339 |         for (i, unit) in ["s", "ms", "us"].iter().enumerate() {
[INFO] [stderr]     |                                            ~~~~
[INFO] [stderr] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stderr]     |
[INFO] [stderr] 339 |         for (i, unit) in IntoIterator::into_iter(["s", "ms", "us"]).enumerate() {
[INFO] [stderr]     |                          ++++++++++++++++++++++++                 ~
[INFO] [stderr] 
[INFO] [stderr] warning: `wping` (bin "wping" test) generated 13 warnings (run `cargo fix --bin "wping" --tests` to apply 11 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: rustc-serialize v0.3.22
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/wping-94c6e961338cdf2c)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6370d2f00e84607093a5d866e6e8835089d143f07252f2a4a2158d222cad4c0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6370d2f00e84607093a5d866e6e8835089d143f07252f2a4a2158d222cad4c0d", kill_on_drop: false }`
[INFO] [stdout] 6370d2f00e84607093a5d866e6e8835089d143f07252f2a4a2158d222cad4c0d
[INFO] testing aoikonomopoulos/wping against beta-2023-12-22 for beta-1.76-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faoikonomopoulos%2Fwping" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aoikonomopoulos/wping on toolchain beta-2023-12-22
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aoikonomopoulos/wping
[INFO] finished tweaking git repo https://github.com/aoikonomopoulos/wping
[INFO] tweaked toml for git repo https://github.com/aoikonomopoulos/wping written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/aoikonomopoulos/wping already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-12-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 43341a07532edc50854df7229a8866005124a0c80ab55c554af4856f90808285
[INFO] running `Command { std: "docker" "start" "-a" "43341a07532edc50854df7229a8866005124a0c80ab55c554af4856f90808285", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "43341a07532edc50854df7229a8866005124a0c80ab55c554af4856f90808285", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43341a07532edc50854df7229a8866005124a0c80ab55c554af4856f90808285", kill_on_drop: false }`
[INFO] [stdout] 43341a07532edc50854df7229a8866005124a0c80ab55c554af4856f90808285
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-12-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0fcda4ed30ae16c79a7305c1c6efc4c8b26074bf5113aea9d66dfd43260779f2
[INFO] running `Command { std: "docker" "start" "-a" "0fcda4ed30ae16c79a7305c1c6efc4c8b26074bf5113aea9d66dfd43260779f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.20
[INFO] [stderr]    Compiling rustc-serialize v0.3.22
[INFO] [stderr]    Compiling log v0.3.6
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling term v0.4.5
[INFO] [stderr]    Compiling num-traits v0.1.36
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]    Compiling unreachable v0.1.1
[INFO] [stderr]    Compiling utf8-ranges v1.0.0
[INFO] [stderr]    Compiling regex-syntax v0.4.0
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling matches v0.1.4
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling thread-id v3.0.0
[INFO] [stderr]    Compiling thread_local v0.3.2
[INFO] [stdout] error[E0310]: the parameter type `T` may not live long enough
[INFO] [stdout]     --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/rustc-serialize-0.3.22/src/serialize.rs:1155:5
[INFO] [stdout]      |
[INFO] [stdout] 1155 |     fn decode<D: Decoder>(d: &mut D) -> Result<Cow<'static, T>, D::Error> {
[INFO] [stdout]      |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]      |     |
[INFO] [stdout]      |     the parameter type `T` must be valid for the static lifetime...
[INFO] [stdout]      |     ...so that the type `T` will meet its required lifetime bounds...
[INFO] [stdout]      |
[INFO] [stdout] note: ...that is required by this bound
[INFO] [stdout]     --> /rustc/0e09125c6c3c2fd70d7de961bcf0e51575235fad/library/alloc/src/borrow.rs:180:30
[INFO] [stdout] help: consider adding an explicit lifetime bound
[INFO] [stdout]      |
[INFO] [stdout] 1151 | impl<'a, T: ?Sized + 'static> Decodable for Cow<'a, T>
[INFO] [stdout]      |                    +++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling aho-corasick v0.6.1
[INFO] [stderr]    Compiling rand v0.3.15
[INFO] [stderr]    Compiling num-integer v0.1.32
[INFO] [stderr]    Compiling ws2_32-sys v0.2.1
[INFO] [stderr]    Compiling unicode-bidi v0.2.5
[INFO] [stderr]    Compiling num-iter v0.1.32
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling unicode-normalization v0.1.4
[INFO] [stderr]    Compiling time v0.1.36
[INFO] [stderr]    Compiling pnet_macros_support v0.1.1
[INFO] [stderr]    Compiling argparse v0.2.1
[INFO] [stderr]    Compiling regex v0.2.1
[INFO] [stderr]    Compiling byteorder v1.0.0
[INFO] [stderr]    Compiling idna v0.1.0
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0310`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-serialize` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "0fcda4ed30ae16c79a7305c1c6efc4c8b26074bf5113aea9d66dfd43260779f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0fcda4ed30ae16c79a7305c1c6efc4c8b26074bf5113aea9d66dfd43260779f2", kill_on_drop: false }`
[INFO] [stdout] 0fcda4ed30ae16c79a7305c1c6efc4c8b26074bf5113aea9d66dfd43260779f2
