[INFO] fetching crate neptune-lang 0.1.3...
[INFO] checking neptune-lang-0.1.3 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate neptune-lang 0.1.3 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate neptune-lang 0.1.3 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 neptune-lang 0.1.3
[INFO] finished tweaking crates.io crate neptune-lang 0.1.3
[INFO] tweaked toml for crates.io crate neptune-lang 0.1.3 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 76 packages to latest compatible versions
[INFO] [stderr]       Adding num_enum v0.5.11 (available: v0.7.3)
[INFO] [stderr]       Adding num_enum_derive v0.5.11 (available: v0.7.3)
[INFO] [stderr]       Adding phf v0.10.1 (available: v0.11.2)
[INFO] [stderr]       Adding phf_generator v0.10.0 (available: v0.11.2)
[INFO] [stderr]       Adding phf_macros v0.10.0 (available: v0.11.2)
[INFO] [stderr]       Adding phf_shared v0.10.0 (available: v0.11.2)
[INFO] [stderr]       Adding proc-macro-crate v1.3.1 (available: v3.2.0)
[INFO] [stderr]       Adding siphasher v0.3.11 (available: v1.0.1)
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.79)
[INFO] [stderr]       Adding toml_edit v0.19.15 (available: v0.22.22)
[INFO] [stderr]       Adding unicode-width v0.1.14 (available: v0.2.0)
[INFO] [stderr]       Adding wasi v0.11.0+wasi-snapshot-preview1 (available: v0.13.2+wasi-0.2.1)
[INFO] [stderr]       Adding winnow v0.5.40 (available: v0.6.20)
[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] 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] f6f316ac10deece69e9e5348e20422b411086e2bd7161fb8b6c4b9f53e8f2125
[INFO] running `Command { std: "docker" "start" "-a" "f6f316ac10deece69e9e5348e20422b411086e2bd7161fb8b6c4b9f53e8f2125", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f6f316ac10deece69e9e5348e20422b411086e2bd7161fb8b6c4b9f53e8f2125", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6f316ac10deece69e9e5348e20422b411086e2bd7161fb8b6c4b9f53e8f2125", kill_on_drop: false }`
[INFO] [stdout] f6f316ac10deece69e9e5348e20422b411086e2bd7161fb8b6c4b9f53e8f2125
[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] d41d9e5e864b4a6041bb31ff332dca91a21131937dc06eec904e0593982a73bb
[INFO] running `Command { std: "docker" "start" "-a" "d41d9e5e864b4a6041bb31ff332dca91a21131937dc06eec904e0593982a73bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling scratch v1.0.7
[INFO] [stderr]    Compiling hashbrown v0.14.5
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling termcolor v1.4.1
[INFO] [stderr]    Compiling libc v0.2.159
[INFO] [stderr]    Compiling toml_datetime v0.6.8
[INFO] [stderr]    Compiling winnow v0.5.40
[INFO] [stderr]    Compiling cxxbridge-flags v1.0.128
[INFO] [stderr]    Compiling link-cplusplus v1.0.9
[INFO] [stderr]    Compiling phf_shared v0.10.0
[INFO] [stderr]     Checking parse_int v0.6.0
[INFO] [stderr]     Checking unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling cxx v1.0.128
[INFO] [stderr]    Compiling codespan-reporting v0.11.1
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling indexmap v2.5.0
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling toml_edit v0.19.15
[INFO] [stderr]    Compiling proc-macro-crate v1.3.1
[INFO] [stderr]    Compiling cxx-build v1.0.128
[INFO] [stderr]    Compiling num_enum_derive v0.5.11
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling serde_derive v1.0.210
[INFO] [stderr]    Compiling cxxbridge-macro v1.0.128
[INFO] [stderr]     Checking num_enum v0.5.11
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]    Compiling ppv-lite86 v0.2.20
[INFO] [stderr]    Compiling neptune-lang v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling phf_generator v0.10.0
[INFO] [stderr]    Compiling phf_macros v0.10.0
[INFO] [stderr]     Checking serde v1.0.210
[INFO] [stderr]     Checking phf v0.10.1
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking serde_json v1.0.128
[INFO] [stdout] warning: elided lifetime has a name
[INFO] [stdout]    --> src/vm.rs:289:54
[INFO] [stdout]     |
[INFO] [stdout] 289 |         fn get_user_data<'vm>(self: &'vm VM) -> &'vm UserData;
[INFO] [stdout]     |                          ---                         ^^^^^^^^ this elided lifetime gets resolved as `'vm`
[INFO] [stdout]     |                          |
[INFO] [stdout]     |                          lifetime `'vm` declared here
[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/vm.rs:289:54
[INFO] [stdout]     |
[INFO] [stdout] 289 |         fn get_user_data<'vm>(self: &'vm VM) -> &'vm UserData;
[INFO] [stdout]     |                          ---                         ^^^^^^^^ this elided lifetime gets resolved as `'vm`
[INFO] [stdout]     |                          |
[INFO] [stdout]     |                          lifetime `'vm` declared here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(elided_named_lifetimes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> src/vm.rs:512:5
[INFO] [stdout]     |
[INFO] [stdout] 512 |     Box::from_raw(data as *mut F);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 512 |     let _ = Box::from_raw(data as *mut F);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> src/vm.rs:512:5
[INFO] [stdout]     |
[INFO] [stdout] 512 |     Box::from_raw(data as *mut F);
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 512 |     let _ = Box::from_raw(data as *mut F);
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 25.40s
[INFO] running `Command { std: "docker" "inspect" "d41d9e5e864b4a6041bb31ff332dca91a21131937dc06eec904e0593982a73bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d41d9e5e864b4a6041bb31ff332dca91a21131937dc06eec904e0593982a73bb", kill_on_drop: false }`
[INFO] [stdout] d41d9e5e864b4a6041bb31ff332dca91a21131937dc06eec904e0593982a73bb