[INFO] fetching crate tree_iterators_rs 1.2.1...
[INFO] checking tree_iterators_rs-1.2.1 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate tree_iterators_rs 1.2.1 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate tree_iterators_rs 1.2.1 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tree_iterators_rs 1.2.1
[INFO] finished tweaking crates.io crate tree_iterators_rs 1.2.1
[INFO] tweaked toml for crates.io crate tree_iterators_rs 1.2.1 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bde44f46063b8d07bd274b8ad2906104f9cb40b07e1f781b585babb490a916c0
[INFO] running `Command { std: "docker" "start" "-a" "bde44f46063b8d07bd274b8ad2906104f9cb40b07e1f781b585babb490a916c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bde44f46063b8d07bd274b8ad2906104f9cb40b07e1f781b585babb490a916c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bde44f46063b8d07bd274b8ad2906104f9cb40b07e1f781b585babb490a916c0", kill_on_drop: false }`
[INFO] [stdout] bde44f46063b8d07bd274b8ad2906104f9cb40b07e1f781b585babb490a916c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd121df99ef00815e852a991ca0bf6c7e133a9d17db33b02b303f07d97afe500
[INFO] running `Command { std: "docker" "start" "-a" "fd121df99ef00815e852a991ca0bf6c7e133a9d17db33b02b303f07d97afe500", kill_on_drop: false }`
[INFO] [stderr]     Checking streaming-iterator v0.1.9
[INFO] [stderr]     Checking tree_iterators_rs v1.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]   --> src/dfs_inorder_iterators/borrow.rs:91:81
[INFO] [stdout]    |
[INFO] [stdout] 87 | impl<'a, Node> BorrowedDFSInorderIteratorWithAncestors<'a, Node>
[INFO] [stdout]    |      -- lifetime `'a` declared here
[INFO] [stdout] ...
[INFO] [stdout] 91 |     pub(crate) fn new(root: &'a Node) -> BorrowedDFSInorderIteratorWithAncestors<Node> {
[INFO] [stdout]    |                                                                                 ^ this elided lifetime gets resolved as `'a`
[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/dfs_postorder_iterators/borrow.rs:85:73
[INFO] [stdout]    |
[INFO] [stdout] 81 | impl<'a, Node> BorrowedDFSPostorderIteratorWithAncestors<'a, Node>
[INFO] [stdout]    |      -- lifetime `'a` declared here
[INFO] [stdout] ...
[INFO] [stdout] 85 |     fn new(root: &'a Node) -> BorrowedDFSPostorderIteratorWithAncestors<'_, Node> {
[INFO] [stdout]    |                                                                         ^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/dfs_postorder_iterators/borrow.rs:182:79
[INFO] [stdout]     |
[INFO] [stdout] 178 | impl<'a, Node> BorrowedBinaryDFSPostorderIteratorWithAncestors<'a, Node>
[INFO] [stdout]     |      -- lifetime `'a` declared here
[INFO] [stdout] ...
[INFO] [stdout] 182 |     fn new(root: &'a Node) -> BorrowedBinaryDFSPostorderIteratorWithAncestors<'_, Node> {
[INFO] [stdout]     |                                                                               ^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]   --> src/dfs_postorder_iterators/mut_borrow.rs:85:80
[INFO] [stdout]    |
[INFO] [stdout] 81 | impl<'a, Node> MutBorrowedDFSPostorderIteratorWithAncestors<'a, Node>
[INFO] [stdout]    |      -- lifetime `'a` declared here
[INFO] [stdout] ...
[INFO] [stdout] 85 |     fn new(root: &'a mut Node) -> MutBorrowedDFSPostorderIteratorWithAncestors<'_, Node> {
[INFO] [stdout]    |                                                                                ^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/dfs_postorder_iterators/mut_borrow.rs:189:86
[INFO] [stdout]     |
[INFO] [stdout] 185 | impl<'a, Node> MutBorrowedBinaryDFSPostorderIteratorWithAncestors<'a, Node>
[INFO] [stdout]     |      -- lifetime `'a` declared here
[INFO] [stdout] ...
[INFO] [stdout] 189 |     fn new(root: &'a mut Node) -> MutBorrowedBinaryDFSPostorderIteratorWithAncestors<'_, Node> {
[INFO] [stdout]     |                                                                                      ^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]   --> src/dfs_inorder_iterators/borrow.rs:91:81
[INFO] [stdout]    |
[INFO] [stdout] 87 | impl<'a, Node> BorrowedDFSInorderIteratorWithAncestors<'a, Node>
[INFO] [stdout]    |      -- lifetime `'a` declared here
[INFO] [stdout] ...
[INFO] [stdout] 91 |     pub(crate) fn new(root: &'a Node) -> BorrowedDFSInorderIteratorWithAncestors<Node> {
[INFO] [stdout]    |                                                                                 ^ this elided lifetime gets resolved as `'a`
[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/dfs_postorder_iterators/borrow.rs:85:73
[INFO] [stdout]    |
[INFO] [stdout] 81 | impl<'a, Node> BorrowedDFSPostorderIteratorWithAncestors<'a, Node>
[INFO] [stdout]    |      -- lifetime `'a` declared here
[INFO] [stdout] ...
[INFO] [stdout] 85 |     fn new(root: &'a Node) -> BorrowedDFSPostorderIteratorWithAncestors<'_, Node> {
[INFO] [stdout]    |                                                                         ^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/dfs_postorder_iterators/borrow.rs:182:79
[INFO] [stdout]     |
[INFO] [stdout] 178 | impl<'a, Node> BorrowedBinaryDFSPostorderIteratorWithAncestors<'a, Node>
[INFO] [stdout]     |      -- lifetime `'a` declared here
[INFO] [stdout] ...
[INFO] [stdout] 182 |     fn new(root: &'a Node) -> BorrowedBinaryDFSPostorderIteratorWithAncestors<'_, Node> {
[INFO] [stdout]     |                                                                               ^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]   --> src/dfs_postorder_iterators/mut_borrow.rs:85:80
[INFO] [stdout]    |
[INFO] [stdout] 81 | impl<'a, Node> MutBorrowedDFSPostorderIteratorWithAncestors<'a, Node>
[INFO] [stdout]    |      -- lifetime `'a` declared here
[INFO] [stdout] ...
[INFO] [stdout] 85 |     fn new(root: &'a mut Node) -> MutBorrowedDFSPostorderIteratorWithAncestors<'_, Node> {
[INFO] [stdout]    |                                                                                ^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/dfs_postorder_iterators/mut_borrow.rs:189:86
[INFO] [stdout]     |
[INFO] [stdout] 185 | impl<'a, Node> MutBorrowedBinaryDFSPostorderIteratorWithAncestors<'a, Node>
[INFO] [stdout]     |      -- lifetime `'a` declared here
[INFO] [stdout] ...
[INFO] [stdout] 189 |     fn new(root: &'a mut Node) -> MutBorrowedBinaryDFSPostorderIteratorWithAncestors<'_, Node> {
[INFO] [stdout]     |                                                                                      ^^ this elided lifetime gets resolved as `'a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.28s
[INFO] running `Command { std: "docker" "inspect" "fd121df99ef00815e852a991ca0bf6c7e133a9d17db33b02b303f07d97afe500", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd121df99ef00815e852a991ca0bf6c7e133a9d17db33b02b303f07d97afe500", kill_on_drop: false }`
[INFO] [stdout] fd121df99ef00815e852a991ca0bf6c7e133a9d17db33b02b303f07d97afe500