[INFO] fetching crate s7 0.1.9...
[INFO] checking s7-0.1.9 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate s7 0.1.9 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate s7 0.1.9 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 s7 0.1.9
[INFO] finished tweaking crates.io crate s7 0.1.9
[INFO] tweaked toml for crates.io crate s7 0.1.9 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" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[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-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d92af3a070180353f3200053a68c66c811dc944c1cc76301f846b9682dfa6fe0
[INFO] running `Command { std: "docker" "start" "-a" "d92af3a070180353f3200053a68c66c811dc944c1cc76301f846b9682dfa6fe0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d92af3a070180353f3200053a68c66c811dc944c1cc76301f846b9682dfa6fe0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d92af3a070180353f3200053a68c66c811dc944c1cc76301f846b9682dfa6fe0", kill_on_drop: false }`
[INFO] [stdout] d92af3a070180353f3200053a68c66c811dc944c1cc76301f846b9682dfa6fe0
[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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0c1e5ac1b2406bb6f1f2a698716fa0d26182ffdf2045bc7176a49c75c5a09733
[INFO] running `Command { std: "docker" "start" "-a" "0c1e5ac1b2406bb6f1f2a698716fa0d26182ffdf2045bc7176a49c75c5a09733", kill_on_drop: false }`
[INFO] [stderr]     Checking s7 v0.1.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `data_szl`
[INFO] [stdout]    --> src/client.rs:723:13
[INFO] [stdout]     |
[INFO] [stdout] 723 |         let data_szl = 0;
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_szl`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `module_type_name`, `serial_number`, `as_name`, `copyright`, and `module_name` are never read
[INFO] [stdout]   --> src/client.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct CpuInfo {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 14 |     module_type_name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 15 |     serial_number: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 16 |     as_name: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 17 |     copyright: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 18 |     module_name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CpuInfo` 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: unused variable: `data_szl`
[INFO] [stdout]    --> src/client.rs:723:13
[INFO] [stdout]     |
[INFO] [stdout] 723 |         let data_szl = 0;
[INFO] [stdout]     |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_data_szl`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `max_pdu_length`, `max_connections`, `max_mpi_rate`, and `max_bus_rate` are never read
[INFO] [stdout]   --> src/client.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct CPInfo {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 23 |     max_pdu_length: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 24 |     max_connections: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 25 |     max_mpi_rate: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 26 |     max_bus_rate: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CPInfo` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `number_of_data_record` is never read
[INFO] [stdout]    --> src/transport.rs:173:9
[INFO] [stdout]     |
[INFO] [stdout] 171 | pub(crate) struct SZLHeader {
[INFO] [stdout]     |                   --------- field in this struct
[INFO] [stdout] 172 |     pub length_header: u16,
[INFO] [stdout] 173 |     pub number_of_data_record: u16,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `module_type_name`, `serial_number`, `as_name`, `copyright`, and `module_name` are never read
[INFO] [stdout]   --> src/client.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct CpuInfo {
[INFO] [stdout]    |            ------- fields in this struct
[INFO] [stdout] 14 |     module_type_name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 15 |     serial_number: String,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 16 |     as_name: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 17 |     copyright: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 18 |     module_name: String,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CpuInfo` 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: fields `max_pdu_length`, `max_connections`, `max_mpi_rate`, and `max_bus_rate` are never read
[INFO] [stdout]   --> src/client.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct CPInfo {
[INFO] [stdout]    |            ------ fields in this struct
[INFO] [stdout] 23 |     max_pdu_length: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 24 |     max_connections: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 25 |     max_mpi_rate: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 26 |     max_bus_rate: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CPInfo` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `number_of_data_record` is never read
[INFO] [stdout]    --> src/transport.rs:173:9
[INFO] [stdout]     |
[INFO] [stdout] 171 | pub(crate) struct SZLHeader {
[INFO] [stdout]     |                   --------- field in this struct
[INFO] [stdout] 172 |     pub length_header: u16,
[INFO] [stdout] 173 |     pub number_of_data_record: u16,
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "0c1e5ac1b2406bb6f1f2a698716fa0d26182ffdf2045bc7176a49c75c5a09733", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c1e5ac1b2406bb6f1f2a698716fa0d26182ffdf2045bc7176a49c75c5a09733", kill_on_drop: false }`
[INFO] [stdout] 0c1e5ac1b2406bb6f1f2a698716fa0d26182ffdf2045bc7176a49c75c5a09733