[INFO] updating cached repository andykilroy/mcast
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/andykilroy/mcast
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/andykilroy/mcast" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/andykilroy/mcast"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/andykilroy/mcast'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/andykilroy/mcast" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/andykilroy/mcast"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/andykilroy/mcast'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9f0bd729f772f1bcc0c982e37265d7d49a8491ef
[INFO] sha for GitHub repo andykilroy/mcast: 9f0bd729f772f1bcc0c982e37265d7d49a8491ef
[INFO] validating manifest of andykilroy/mcast on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of andykilroy/mcast on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing andykilroy/mcast
[INFO] finished frobbing andykilroy/mcast
[INFO] frobbed toml for andykilroy/mcast written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/andykilroy/mcast/Cargo.toml
[INFO] started frobbing andykilroy/mcast
[INFO] finished frobbing andykilroy/mcast
[INFO] frobbed toml for andykilroy/mcast written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/andykilroy/mcast/Cargo.toml
[INFO] crate andykilroy/mcast already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking andykilroy/mcast against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-4/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/andykilroy/mcast:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e0d3c1452ccc418c333c20bb99db3be25c9fe09d0a69353cf509f45a8ed295f3
[INFO] running `"docker" "start" "-a" "e0d3c1452ccc418c333c20bb99db3be25c9fe09d0a69353cf509f45a8ed295f3"`
[INFO] [stderr]    Compiling escargot v0.4.0
[INFO] [stderr]     Checking predicates-core v1.0.0
[INFO] [stderr]     Checking log v0.4.7
[INFO] [stderr]     Checking backtrace-sys v0.1.30
[INFO] [stderr]     Checking socket2 v0.3.9
[INFO] [stderr]     Checking float-cmp v0.4.0
[INFO] [stderr]     Checking regex v1.1.9
[INFO] [stderr]    Compiling serde_derive v1.0.94
[INFO] [stderr]     Checking backtrace v0.3.12
[INFO] [stderr]     Checking structopt v0.2.18
[INFO] [stderr]     Checking predicates-tree v1.0.0
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking exitfailure v0.5.1
[INFO] [stderr]     Checking mcast v0.1.4 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/main.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | #[macro_use]
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_ipv4_groups`
[INFO] [stderr]   --> src/main.rs:88:1
[INFO] [stderr]    |
[INFO] [stderr] 88 | fn parse_ipv4_groups(groups_str: &[String]) -> Result<Vec<Ipv4Addr>, Error> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Checking predicates v1.0.1
[INFO] [stderr]     Checking serde v1.0.94
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking assert_cmd v0.11.1
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]   --> src/main.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | #[macro_use]
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> tests/cli.rs:6:45
[INFO] [stderr]   |
[INFO] [stderr] 6 | fn send_not_enough_args() -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]   |                                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[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]   --> tests/cli.rs:16:53
[INFO] [stderr]    |
[INFO] [stderr] 16 | fn send_to_malformed_ipv4_group() -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]    |                                                     ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/cli.rs:30:50
[INFO] [stderr]    |
[INFO] [stderr] 30 | fn send_to_out_of_range_port() -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/cli.rs:44:57
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn send_to_malformed_ipv4_interface() -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]    |                                                         ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/cli.rs:58:47
[INFO] [stderr]    |
[INFO] [stderr] 58 | fn listen_not_enough_args() -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]    |                                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/cli.rs:68:74
[INFO] [stderr]    |
[INFO] [stderr] 68 | fn listen_must_be_given_at_least_one_multicast_group() -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]    |                                                                          ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/cli.rs:79:55
[INFO] [stderr]    |
[INFO] [stderr] 79 | fn listen_to_malformed_ipv4_group() -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]    |                                                       ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/cli.rs:93:52
[INFO] [stderr]    |
[INFO] [stderr] 93 | fn listen_to_out_of_range_port() -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> tests/cli.rs:107:59
[INFO] [stderr]     |
[INFO] [stderr] 107 | fn listen_to_malformed_ipv4_interface() -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]     |                                                           ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> tests/cli.rs:121:45
[INFO] [stderr]     |
[INFO] [stderr] 121 | fn unrecognised_command() -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]     |                                             ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_ipv4_groups`
[INFO] [stderr]   --> src/main.rs:88:1
[INFO] [stderr]    |
[INFO] [stderr] 88 | fn parse_ipv4_groups(groups_str: &[String]) -> Result<Vec<Ipv4Addr>, Error> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.15s
[INFO] running `"docker" "inspect" "e0d3c1452ccc418c333c20bb99db3be25c9fe09d0a69353cf509f45a8ed295f3"`
[INFO] running `"docker" "rm" "-f" "e0d3c1452ccc418c333c20bb99db3be25c9fe09d0a69353cf509f45a8ed295f3"`
[INFO] [stdout] e0d3c1452ccc418c333c20bb99db3be25c9fe09d0a69353cf509f45a8ed295f3