[INFO] fetching crate mse_fmp4 0.2.0...
[INFO] checking mse_fmp4-0.2.0 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate mse_fmp4 0.2.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate mse_fmp4 0.2.0 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 mse_fmp4 0.2.0
[INFO] finished tweaking crates.io crate mse_fmp4 0.2.0
[INFO] tweaked toml for crates.io crate mse_fmp4 0.2.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate crates.io crate mse_fmp4 0.2.0 already has a lockfile, it will not be regenerated
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 56b580dbf4d2f5f72610e0d12229d53cb3275f151c8cd4fad044d2039be381ed
[INFO] running `Command { std: "docker" "start" "-a" "56b580dbf4d2f5f72610e0d12229d53cb3275f151c8cd4fad044d2039be381ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56b580dbf4d2f5f72610e0d12229d53cb3275f151c8cd4fad044d2039be381ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56b580dbf4d2f5f72610e0d12229d53cb3275f151c8cd4fad044d2039be381ed", kill_on_drop: false }`
[INFO] [stdout] 56b580dbf4d2f5f72610e0d12229d53cb3275f151c8cd4fad044d2039be381ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 9078ffc9bf177a909270dd9eee3860d4ddd4eac6eafbb6f3bad6622240d52b7c
[INFO] running `Command { std: "docker" "start" "-a" "9078ffc9bf177a909270dd9eee3860d4ddd4eac6eafbb6f3bad6622240d52b7c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]    Compiling trackable_derive v0.1.3
[INFO] [stderr]     Checking trackable v0.2.23
[INFO] [stderr]     Checking mpeg2ts v0.1.1
[INFO] [stderr]     Checking mse_fmp4 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `private` and `buffer_fullness` are never read
[INFO] [stdout]   --> src/aac.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub(crate) struct AdtsHeader {
[INFO] [stdout]    |                   ---------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |     pub private: bool,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub buffer_fullness: u16, // u11
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AdtsHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `nal_ref_idc` is never read
[INFO] [stdout]    --> src/avc.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 143 | pub(crate) struct NalUnit {
[INFO] [stdout]     |                   ------- field in this struct
[INFO] [stdout] 144 |     pub nal_ref_idc: u8,
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `NalUnit` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `private` and `buffer_fullness` are never read
[INFO] [stdout]   --> src/aac.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 9  | pub(crate) struct AdtsHeader {
[INFO] [stdout]    |                   ---------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 12 |     pub private: bool,
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     pub buffer_fullness: u16, // u11
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AdtsHeader` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `nal_ref_idc` is never read
[INFO] [stdout]    --> src/avc.rs:144:9
[INFO] [stdout]     |
[INFO] [stdout] 143 | pub(crate) struct NalUnit {
[INFO] [stdout]     |                   ------- field in this struct
[INFO] [stdout] 144 |     pub nal_ref_idc: u8,
[INFO] [stdout]     |         ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `NalUnit` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.21s
[INFO] running `Command { std: "docker" "inspect" "9078ffc9bf177a909270dd9eee3860d4ddd4eac6eafbb6f3bad6622240d52b7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9078ffc9bf177a909270dd9eee3860d4ddd4eac6eafbb6f3bad6622240d52b7c", kill_on_drop: false }`
[INFO] [stdout] 9078ffc9bf177a909270dd9eee3860d4ddd4eac6eafbb6f3bad6622240d52b7c