[INFO] fetching crate smoltcp 0.7.5...
[INFO] checking smoltcp-0.7.5 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate smoltcp 0.7.5 into /workspace/builds/worker-18/source
[INFO] validating manifest of crates.io crate smoltcp 0.7.5 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate smoltcp 0.7.5
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate smoltcp 0.7.5
[INFO] tweaked toml for crates.io crate smoltcp 0.7.5 written to /workspace/builds/worker-18/source/Cargo.toml
[INFO] crate crates.io crate smoltcp 0.7.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tinyvec v0.3.4
[INFO] [stderr]   Downloaded hermit-abi v0.1.16
[INFO] [stderr]   Downloaded libc v0.2.77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 00ca6a589a427448912c9ee8101ab67855d48786bf2a683b7e62c028e5f6dab1
[INFO] running `Command { std: "docker" "start" "-a" "00ca6a589a427448912c9ee8101ab67855d48786bf2a683b7e62c028e5f6dab1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "00ca6a589a427448912c9ee8101ab67855d48786bf2a683b7e62c028e5f6dab1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00ca6a589a427448912c9ee8101ab67855d48786bf2a683b7e62c028e5f6dab1", kill_on_drop: false }`
[INFO] [stdout] 00ca6a589a427448912c9ee8101ab67855d48786bf2a683b7e62c028e5f6dab1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 18c75c9fc2b154935900b8714541615d16411d872dbb87ccb6e97d8bcb93e508
[INFO] running `Command { std: "docker" "start" "-a" "18c75c9fc2b154935900b8714541615d16411d872dbb87ccb6e97d8bcb93e508", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking tinyvec v0.3.4
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking managed v0.7.2
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking unicode-normalization v0.1.13
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking smoltcp v0.7.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/socket/mod.rs:97:57
[INFO] [stdout]     |
[INFO] [stdout] 97  |         dispatch_socket!(@inner $self_, |$socket| $code);
[INFO] [stdout]     |                                                         ^
[INFO] [stdout] ...
[INFO] [stdout] 124 |         dispatch_socket!(self, |socket| &socket.meta)
[INFO] [stdout]     |         --------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(semicolon_in_expressions_from_macros)]` 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 #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `dispatch_socket`
[INFO] [stdout]     = note: this warning originates in the macro `dispatch_socket` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/socket/mod.rs:100:61
[INFO] [stdout]     |
[INFO] [stdout] 100 |         dispatch_socket!(@inner mut $self_, |$socket| $code);
[INFO] [stdout]     |                                                             ^
[INFO] [stdout] ...
[INFO] [stdout] 128 |         dispatch_socket!(mut self, |socket| &mut socket.meta)
[INFO] [stdout]     |         ----------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[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 #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `dispatch_socket`
[INFO] [stdout]     = note: this warning originates in the macro `dispatch_socket` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/socket/mod.rs:97:57
[INFO] [stdout]     |
[INFO] [stdout] 97  |         dispatch_socket!(@inner $self_, |$socket| $code);
[INFO] [stdout]     |                                                         ^
[INFO] [stdout] ...
[INFO] [stdout] 132 |         dispatch_socket!(self, |socket| socket.poll_at())
[INFO] [stdout]     |         ------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[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 #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `dispatch_socket`
[INFO] [stdout]     = note: this warning originates in the macro `dispatch_socket` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trailing semicolon in macro used in expression position
[INFO] [stdout]    --> src/socket/mod.rs:100:61
[INFO] [stdout]     |
[INFO] [stdout] 100 |         dispatch_socket!(@inner mut $self_, |$socket| $code);
[INFO] [stdout]     |                                                             ^
[INFO] [stdout] ...
[INFO] [stdout] 138 |         dispatch_socket!(mut self, |socket| socket.finish())
[INFO] [stdout]     |         ---------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[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 #79813 <https://github.com/rust-lang/rust/issues/79813>
[INFO] [stdout]     = note: macro invocations at the end of a block are treated as expressions
[INFO] [stdout]     = note: to ignore the value produced by the macro, add a semicolon after the invocation of `dispatch_socket`
[INFO] [stdout]     = note: this warning originates in the macro `dispatch_socket` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stdout] error: field is never read: `reorder_pct`
[INFO] [stdout]   --> src/phy/fault_injector.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     reorder_pct: u8,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:3:98
[INFO] [stdout]    |
[INFO] [stdout] 3  | #![cfg_attr(all(any(feature = "proto-ipv4", feature = "proto-ipv6"), feature = "ethernet"), deny(unused))]
[INFO] [stdout]    |                                                                                                  ^^^^^^
[INFO] [stdout]    = note: `#[deny(dead_code)]` implied by `#[deny(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field is never read: `endpoint_ip`
[INFO] [stdout]   --> src/dhcp/clientv4.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 34 |     endpoint_ip: Ipv4Address,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field is never read: `server_identifier`
[INFO] [stdout]   --> src/dhcp/clientv4.rs:42:5
[INFO] [stdout]    |
[INFO] [stdout] 42 |     server_identifier: Ipv4Address,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `smoltcp` due to 4 previous errors; 4 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "18c75c9fc2b154935900b8714541615d16411d872dbb87ccb6e97d8bcb93e508", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18c75c9fc2b154935900b8714541615d16411d872dbb87ccb6e97d8bcb93e508", kill_on_drop: false }`
[INFO] [stdout] 18c75c9fc2b154935900b8714541615d16411d872dbb87ccb6e97d8bcb93e508