[INFO] fetching crate looking-glass 0.1.1...
[INFO] checking looking-glass-0.1.1 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate looking-glass 0.1.1 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate looking-glass 0.1.1 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 looking-glass 0.1.1
[INFO] finished tweaking crates.io crate looking-glass 0.1.1
[INFO] tweaked toml for crates.io crate looking-glass 0.1.1 written to /workspace/builds/worker-7-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]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 18 packages to latest compatible versions
[INFO] [stderr]       Adding darling v0.12.4 (available: v0.20.10)
[INFO] [stderr]       Adding darling_core v0.12.4 (available: v0.20.10)
[INFO] [stderr]       Adding darling_macro v0.12.4 (available: v0.20.10)
[INFO] [stderr]       Adding smol_str v0.1.24 (available: v0.3.1)
[INFO] [stderr]       Adding strsim v0.10.0 (available: v0.11.1)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.79)
[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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] f92b4158d6c6fefd9d6b3c1834da3cfc41420022460245fb588fd13cee63de07
[INFO] running `Command { std: "docker" "start" "-a" "f92b4158d6c6fefd9d6b3c1834da3cfc41420022460245fb588fd13cee63de07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f92b4158d6c6fefd9d6b3c1834da3cfc41420022460245fb588fd13cee63de07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f92b4158d6c6fefd9d6b3c1834da3cfc41420022460245fb588fd13cee63de07", kill_on_drop: false }`
[INFO] [stdout] f92b4158d6c6fefd9d6b3c1834da3cfc41420022460245fb588fd13cee63de07
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 5a4f48e9b9bf85784c8a62a4b5174464500ba2abf1a4699b5f88af0c77e83453
[INFO] running `Command { std: "docker" "start" "-a" "5a4f48e9b9bf85784c8a62a4b5174464500ba2abf1a4699b5f88af0c77e83453", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling fnv v1.0.7
[INFO] [stderr]    Compiling serde v1.0.210
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]     Checking smol_str v0.1.24
[INFO] [stderr]     Checking looking-glass v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `smol_str::SmolStr`
[INFO] [stdout]  --> src/owned.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use smol_str::SmolStr;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `bytes::Bytes`
[INFO] [stdout]  --> src/primatives.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use bytes::Bytes;
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `smol_str::SmolStr`
[INFO] [stdout]  --> src/typed.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub use smol_str::SmolStr;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]   --> src/value.rs:97:52
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl<'val, 'ty> Value<'val, 'ty> {
[INFO] [stdout]    |      ---- lifetime `'val` declared here
[INFO] [stdout] ...
[INFO] [stdout] 97 |     pub fn as_reflected_enum(&'val self) -> Option<&(dyn EnumInstance<'ty> + 'ty)> {
[INFO] [stdout]    |                                                    ^ this elided lifetime gets resolved as `'val`
[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/value.rs:105:54
[INFO] [stdout]     |
[INFO] [stdout] 41  | impl<'val, 'ty> Value<'val, 'ty> {
[INFO] [stdout]     |      ---- lifetime `'val` declared here
[INFO] [stdout] ...
[INFO] [stdout] 105 |     pub fn as_reflected_option(&'val self) -> Option<&(dyn OptionInstance<'ty> + 'ty)> {
[INFO] [stdout]     |                                                      ^ this elided lifetime gets resolved as `'val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `primatives::*`
[INFO] [stdout]   --> src/lib.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 | pub use primatives::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling darling_core v0.12.4
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling darling_macro v0.12.4
[INFO] [stderr]    Compiling darling v0.12.4
[INFO] [stderr]    Compiling looking-glass-derive v0.1.1
[INFO] [stdout] warning: unused import: `smol_str::SmolStr`
[INFO] [stdout]  --> src/owned.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use smol_str::SmolStr;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `bytes::Bytes`
[INFO] [stdout]  --> src/primatives.rs:2:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub use bytes::Bytes;
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `smol_str::SmolStr`
[INFO] [stdout]  --> src/typed.rs:3:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub use smol_str::SmolStr;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]   --> src/value.rs:97:52
[INFO] [stdout]    |
[INFO] [stdout] 41 | impl<'val, 'ty> Value<'val, 'ty> {
[INFO] [stdout]    |      ---- lifetime `'val` declared here
[INFO] [stdout] ...
[INFO] [stdout] 97 |     pub fn as_reflected_enum(&'val self) -> Option<&(dyn EnumInstance<'ty> + 'ty)> {
[INFO] [stdout]    |                                                    ^ this elided lifetime gets resolved as `'val`
[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/value.rs:105:54
[INFO] [stdout]     |
[INFO] [stdout] 41  | impl<'val, 'ty> Value<'val, 'ty> {
[INFO] [stdout]     |      ---- lifetime `'val` declared here
[INFO] [stdout] ...
[INFO] [stdout] 105 |     pub fn as_reflected_option(&'val self) -> Option<&(dyn OptionInstance<'ty> + 'ty)> {
[INFO] [stdout]     |                                                      ^ this elided lifetime gets resolved as `'val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `primatives::*`
[INFO] [stdout]   --> src/lib.rs:82:9
[INFO] [stdout]    |
[INFO] [stdout] 82 | pub use primatives::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.deref()` on a reference in this situation does nothing
[INFO] [stdout]   --> src/tests.rs:15:53
[INFO] [stdout]    |
[INFO] [stdout] 15 |     assert_eq!("test", val.borrow::<&str>().unwrap().deref());
[INFO] [stdout]    |                                                     ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]    |
[INFO] [stdout]    = note: the type `str` does not implement `Deref`, so calling `deref` on `&str` copies the reference, which does not do anything and can be removed
[INFO] [stdout]    = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.42s
[INFO] running `Command { std: "docker" "inspect" "5a4f48e9b9bf85784c8a62a4b5174464500ba2abf1a4699b5f88af0c77e83453", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a4f48e9b9bf85784c8a62a4b5174464500ba2abf1a4699b5f88af0c77e83453", kill_on_drop: false }`
[INFO] [stdout] 5a4f48e9b9bf85784c8a62a4b5174464500ba2abf1a4699b5f88af0c77e83453