[INFO] fetching crate smolsocket 0.3.0...
[INFO] checking smolsocket-0.3.0 against f3df2feb79b2422c028f78855ec6ffe2e212d7cc for pr-163699
[INFO] extracting crate smolsocket 0.3.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate smolsocket 0.3.0
[INFO] finished tweaking crates.io crate smolsocket 0.3.0
[INFO] tweaked toml for crates.io crate smolsocket 0.3.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate smolsocket 0.3.0 on toolchain f3df2feb79b2422c028f78855ec6ffe2e212d7cc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f3df2feb79b2422c028f78855ec6ffe2e212d7cc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f3df2feb79b2422c028f78855ec6ffe2e212d7cc" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 58 packages to highest compatible versions
[INFO] [stderr]       Adding pretty_env_logger v0.3.1 (available: v0.5.0)
[INFO] [stderr]       Adding smoltcp v0.6.0 (available: v0.14.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f3df2feb79b2422c028f78855ec6ffe2e212d7cc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]   --> Cargo.toml:28:12
[INFO] [stderr]    |
[INFO] [stderr] 28 | homepage = "https://github.com/hlzhang/smolsocket/"
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 32 | repository = "https://github.com/hlzhang/smolsocket/"
[INFO] [stderr]    |              ----------------------------------------
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `smolsocket` (manifest) generated 1 warning
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4108e5ab317d28efc97bb72f700ebae7bed6b28ae831d185fb77e1ead5d0264e
[INFO] running `Command { std: "docker" "start" "4108e5ab317d28efc97bb72f700ebae7bed6b28ae831d185fb77e1ead5d0264e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4108e5ab317d28efc97bb72f700ebae7bed6b28ae831d185fb77e1ead5d0264e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4108e5ab317d28efc97bb72f700ebae7bed6b28ae831d185fb77e1ead5d0264e" "/opt/rustwide/cargo-home/bin/cargo" "+f3df2feb79b2422c028f78855ec6ffe2e212d7cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4108e5ab317d28efc97bb72f700ebae7bed6b28ae831d185fb77e1ead5d0264e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4108e5ab317d28efc97bb72f700ebae7bed6b28ae831d185fb77e1ead5d0264e" "/opt/rustwide/cargo-home/bin/cargo" "+f3df2feb79b2422c028f78855ec6ffe2e212d7cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]   --> Cargo.toml:28:12
[INFO] [stderr]    |
[INFO] [stderr] 28 | homepage = "https://github.com/hlzhang/smolsocket/"
[INFO] [stderr]    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 32 | repository = "https://github.com/hlzhang/smolsocket/"
[INFO] [stderr]    |              ----------------------------------------
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `smolsocket` (manifest) generated 1 warning
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking managed v0.7.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking smoltcp v0.6.0
[INFO] [stdout] error: reserved `doc` attribute `shown`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/smoltcp-0.6.0/src/macros.rs:36:26
[INFO] [stdout]    |
[INFO] [stdout] 26 |   macro_rules! enum_with_unknown {
[INFO] [stdout] ...
[INFO] [stdout] 36 |                   $( #[doc(shown)] $variant = $value ),+
[INFO] [stdout]    |                            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]   ::: /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/smoltcp-0.6.0/src/wire/ip.rs:52:1
[INFO] [stdout]    |
[INFO] [stdout] 52 | / enum_with_unknown! {
[INFO] [stdout] 53 | |     /// IP datagram encapsulated protocol.
[INFO] [stdout] 54 | |     pub enum Protocol(u8) {
[INFO] [stdout] 55 | |         HopByHop  = 0x00,
[INFO] [stdout] ...  |
[INFO] [stdout] 66 | | }
[INFO] [stdout]    | |_- in this macro invocation
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking pretty_env_logger v0.3.1
[INFO] [stderr] error: could not compile `smoltcp` (lib) due to 1 previous error; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "4108e5ab317d28efc97bb72f700ebae7bed6b28ae831d185fb77e1ead5d0264e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4108e5ab317d28efc97bb72f700ebae7bed6b28ae831d185fb77e1ead5d0264e", kill_on_drop: false }`
[INFO] [stdout] 4108e5ab317d28efc97bb72f700ebae7bed6b28ae831d185fb77e1ead5d0264e