[INFO] fetching crate serlp 0.3.1...
[INFO] checking serlp-0.3.1 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate serlp 0.3.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate serlp 0.3.1 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serlp 0.3.1
[INFO] finished tweaking crates.io crate serlp 0.3.1
[INFO] tweaked toml for crates.io crate serlp 0.3.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 14 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 499356439dc57d2d9f30a338aeaad68eab35a8ce5c7409683863d40ee86e8e80
[INFO] running `Command { std: "docker" "start" "-a" "499356439dc57d2d9f30a338aeaad68eab35a8ce5c7409683863d40ee86e8e80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "499356439dc57d2d9f30a338aeaad68eab35a8ce5c7409683863d40ee86e8e80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "499356439dc57d2d9f30a338aeaad68eab35a8ce5c7409683863d40ee86e8e80", kill_on_drop: false }`
[INFO] [stdout] 499356439dc57d2d9f30a338aeaad68eab35a8ce5c7409683863d40ee86e8e80
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=forbid -Dtail_expr_drop_order" "-e" "RUSTDOCFLAGS=--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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f0fa1e4193e6128ef66fbd598e55c9f0a746e856a8937e5a4ae72aa71ccc6dd4
[INFO] running `Command { std: "docker" "start" "-a" "f0fa1e4193e6128ef66fbd598e55c9f0a746e856a8937e5a4ae72aa71ccc6dd4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]     Checking num-bigint v0.4.6
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.77
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]     Checking serde v1.0.210
[INFO] [stderr]     Checking serde_bytes v0.11.15
[INFO] [stderr]     Checking serlp v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/rlp.rs:113:31
[INFO] [stdout]     |
[INFO] [stdout] 89  | impl<'de> RlpTree<'de> {
[INFO] [stdout]     |      --- lifetime `'de` declared here
[INFO] [stdout] ...
[INFO] [stdout] 113 |     pub fn root(&'de self) -> &RlpNode {
[INFO] [stdout]     |                               ^ this elided lifetime gets resolved as `'de`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/rlp.rs:113:32
[INFO] [stdout]     |
[INFO] [stdout] 89  | impl<'de> RlpTree<'de> {
[INFO] [stdout]     |      --- lifetime `'de` declared here
[INFO] [stdout] ...
[INFO] [stdout] 113 |     pub fn root(&'de self) -> &RlpNode {
[INFO] [stdout]     |                                ^^^^^^^ this elided lifetime gets resolved as `'de`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/rlp.rs:121:39
[INFO] [stdout]     |
[INFO] [stdout] 89  | impl<'de> RlpTree<'de> {
[INFO] [stdout]     |      --- lifetime `'de` declared here
[INFO] [stdout] ...
[INFO] [stdout] 121 |     pub fn root_mut(&'de mut self) -> &mut RlpNode {
[INFO] [stdout]     |                                       ^ this elided lifetime gets resolved as `'de`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/rlp.rs:121:44
[INFO] [stdout]     |
[INFO] [stdout] 89  | impl<'de> RlpTree<'de> {
[INFO] [stdout]     |      --- lifetime `'de` declared here
[INFO] [stdout] ...
[INFO] [stdout] 121 |     pub fn root_mut(&'de mut self) -> &mut RlpNode {
[INFO] [stdout]     |                                            ^^^^^^^ this elided lifetime gets resolved as `'de`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/rlp.rs:113:31
[INFO] [stdout]     |
[INFO] [stdout] 89  | impl<'de> RlpTree<'de> {
[INFO] [stdout]     |      --- lifetime `'de` declared here
[INFO] [stdout] ...
[INFO] [stdout] 113 |     pub fn root(&'de self) -> &RlpNode {
[INFO] [stdout]     |                               ^ this elided lifetime gets resolved as `'de`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/rlp.rs:113:32
[INFO] [stdout]     |
[INFO] [stdout] 89  | impl<'de> RlpTree<'de> {
[INFO] [stdout]     |      --- lifetime `'de` declared here
[INFO] [stdout] ...
[INFO] [stdout] 113 |     pub fn root(&'de self) -> &RlpNode {
[INFO] [stdout]     |                                ^^^^^^^ this elided lifetime gets resolved as `'de`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/rlp.rs:121:39
[INFO] [stdout]     |
[INFO] [stdout] 89  | impl<'de> RlpTree<'de> {
[INFO] [stdout]     |      --- lifetime `'de` declared here
[INFO] [stdout] ...
[INFO] [stdout] 121 |     pub fn root_mut(&'de mut self) -> &mut RlpNode {
[INFO] [stdout]     |                                       ^ this elided lifetime gets resolved as `'de`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/rlp.rs:121:44
[INFO] [stdout]     |
[INFO] [stdout] 89  | impl<'de> RlpTree<'de> {
[INFO] [stdout]     |      --- lifetime `'de` declared here
[INFO] [stdout] ...
[INFO] [stdout] 121 |     pub fn root_mut(&'de mut self) -> &mut RlpNode {
[INFO] [stdout]     |                                            ^^^^^^^ this elided lifetime gets resolved as `'de`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Equiv` is never constructed
[INFO] [stdout]    --> src/lib.rs:466:16
[INFO] [stdout]     |
[INFO] [stdout] 466 |         struct Equiv((u32, u64));
[INFO] [stdout]     |                ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 11.09s
[INFO] running `Command { std: "docker" "inspect" "f0fa1e4193e6128ef66fbd598e55c9f0a746e856a8937e5a4ae72aa71ccc6dd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0fa1e4193e6128ef66fbd598e55c9f0a746e856a8937e5a4ae72aa71ccc6dd4", kill_on_drop: false }`
[INFO] [stdout] f0fa1e4193e6128ef66fbd598e55c9f0a746e856a8937e5a4ae72aa71ccc6dd4