[INFO] fetching crate pcast 0.3.0...
[INFO] checking pcast-0.3.0 against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] extracting crate pcast 0.3.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate pcast 0.3.0 on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pcast 0.3.0
[INFO] finished tweaking crates.io crate pcast 0.3.0
[INFO] tweaked toml for crates.io crate pcast 0.3.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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] 40903bca57f46197528d9b8bcd1e6e954e18e1175046c8d651422ad3fe920d73
[INFO] running `Command { std: "docker" "start" "-a" "40903bca57f46197528d9b8bcd1e6e954e18e1175046c8d651422ad3fe920d73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40903bca57f46197528d9b8bcd1e6e954e18e1175046c8d651422ad3fe920d73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40903bca57f46197528d9b8bcd1e6e954e18e1175046c8d651422ad3fe920d73", kill_on_drop: false }`
[INFO] [stdout] 40903bca57f46197528d9b8bcd1e6e954e18e1175046c8d651422ad3fe920d73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c031f121bcf0049c01558b8b2015cae139227007530cb2e4e68d52ffa3582905
[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" "c031f121bcf0049c01558b8b2015cae139227007530cb2e4e68d52ffa3582905", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking try_from v0.2.2
[INFO] [stderr]     Checking pcast v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:106:17
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   try!($crate::SubtypeCheck::<$base, $sub, $cerr>::check_is_valid_subtype(&base));
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] ...
[INFO] [stdout] 175 | /     subtype_of!(Packet => PingPacket | ConversionError {
[INFO] [stdout] 176 | |         Ok(())
[INFO] [stdout] 177 | |     });
[INFO] [stdout]     | |_______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:116:17
[INFO] [stdout]     |
[INFO] [stdout] 116 |                   try!($crate::SubtypeCheck::<$base, $sub, $cerr>::check_is_valid_subtype(base_ref));
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] ...
[INFO] [stdout] 175 | /     subtype_of!(Packet => PingPacket | ConversionError {
[INFO] [stdout] 176 | |         Ok(())
[INFO] [stdout] 177 | |     });
[INFO] [stdout]     | |_______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:126:17
[INFO] [stdout]     |
[INFO] [stdout] 126 |                   try!($crate::SubtypeCheck::<$base, $sub, $cerr>::check_is_valid_subtype(base_ref));
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] ...
[INFO] [stdout] 175 | /     subtype_of!(Packet => PingPacket | ConversionError {
[INFO] [stdout] 176 | |         Ok(())
[INFO] [stdout] 177 | |     });
[INFO] [stdout]     | |_______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:106:17
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   try!($crate::SubtypeCheck::<$base, $sub, $cerr>::check_is_valid_subtype(&base));
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] ...
[INFO] [stdout] 178 | /     subtype_of!(Packet => PongPacket | PongConvError {
[INFO] [stdout] 179 | |         Err(PongConvError {})
[INFO] [stdout] 180 | |     });
[INFO] [stdout]     | |_______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:116:17
[INFO] [stdout]     |
[INFO] [stdout] 116 |                   try!($crate::SubtypeCheck::<$base, $sub, $cerr>::check_is_valid_subtype(base_ref));
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] ...
[INFO] [stdout] 178 | /     subtype_of!(Packet => PongPacket | PongConvError {
[INFO] [stdout] 179 | |         Err(PongConvError {})
[INFO] [stdout] 180 | |     });
[INFO] [stdout]     | |_______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:126:17
[INFO] [stdout]     |
[INFO] [stdout] 126 |                   try!($crate::SubtypeCheck::<$base, $sub, $cerr>::check_is_valid_subtype(base_ref));
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] ...
[INFO] [stdout] 178 | /     subtype_of!(Packet => PongPacket | PongConvError {
[INFO] [stdout] 179 | |         Err(PongConvError {})
[INFO] [stdout] 180 | |     });
[INFO] [stdout]     | |_______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:106:17
[INFO] [stdout]     |
[INFO] [stdout] 106 |                   try!($crate::SubtypeCheck::<$base, $sub, $cerr>::check_is_valid_subtype(&base));
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] ...
[INFO] [stdout] 181 | /     subtype_of!(Packet => StatusPacket | () {
[INFO] [stdout] 182 | |         Ok(())
[INFO] [stdout] 183 | |     });
[INFO] [stdout]     | |_______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:116:17
[INFO] [stdout]     |
[INFO] [stdout] 116 |                   try!($crate::SubtypeCheck::<$base, $sub, $cerr>::check_is_valid_subtype(base_ref));
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] ...
[INFO] [stdout] 181 | /     subtype_of!(Packet => StatusPacket | () {
[INFO] [stdout] 182 | |         Ok(())
[INFO] [stdout] 183 | |     });
[INFO] [stdout]     | |_______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:126:17
[INFO] [stdout]     |
[INFO] [stdout] 126 |                   try!($crate::SubtypeCheck::<$base, $sub, $cerr>::check_is_valid_subtype(base_ref));
[INFO] [stdout]     |                   ^^^
[INFO] [stdout] ...
[INFO] [stdout] 181 | /     subtype_of!(Packet => StatusPacket | () {
[INFO] [stdout] 182 | |         Ok(())
[INFO] [stdout] 183 | |     });
[INFO] [stdout]     | |_______- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:235:13
[INFO] [stdout]     |
[INFO] [stdout] 235 |         let mut status_mut_ref: &mut StatusPacket = (&mut owned).try_into().unwrap();
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:258:13
[INFO] [stdout]     |
[INFO] [stdout] 258 |         let mut status_mut_view: &mut StatusPacket = pref.try_into().unwrap();
[INFO] [stdout]     |             ----^^^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:275:13
[INFO] [stdout]     |
[INFO] [stdout] 275 |         let mut status_mut_view: &mut StatusPacket = (&mut owned).try_into().unwrap();
[INFO] [stdout]     |             ----^^^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `Command { std: "docker" "inspect" "c031f121bcf0049c01558b8b2015cae139227007530cb2e4e68d52ffa3582905", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c031f121bcf0049c01558b8b2015cae139227007530cb2e4e68d52ffa3582905", kill_on_drop: false }`
[INFO] [stdout] c031f121bcf0049c01558b8b2015cae139227007530cb2e4e68d52ffa3582905