[INFO] fetching crate signum 0.2.1...
[INFO] checking signum-0.2.1 against try#8de4b308b608cded0ebccf658a0fc719bce87d4e for pr-89056
[INFO] extracting crate signum 0.2.1 into /workspace/builds/worker-24/source
[INFO] validating manifest of crates.io crate signum 0.2.1 on toolchain 8de4b308b608cded0ebccf658a0fc719bce87d4e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate signum 0.2.1
[INFO] finished tweaking crates.io crate signum 0.2.1
[INFO] tweaked toml for crates.io crate signum 0.2.1 written to /workspace/builds/worker-24/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 68b6dd985cfd561d7dc74221454fd0c8c3f394d7b996d8080370800c2cad07e1
[INFO] running `Command { std: "docker" "start" "-a" "68b6dd985cfd561d7dc74221454fd0c8c3f394d7b996d8080370800c2cad07e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "68b6dd985cfd561d7dc74221454fd0c8c3f394d7b996d8080370800c2cad07e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68b6dd985cfd561d7dc74221454fd0c8c3f394d7b996d8080370800c2cad07e1", kill_on_drop: false }`
[INFO] [stdout] 68b6dd985cfd561d7dc74221454fd0c8c3f394d7b996d8080370800c2cad07e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-24/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" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+8de4b308b608cded0ebccf658a0fc719bce87d4e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] affbb109d4f7ab22dfe535f80e7eac042878b492bfe036a8fecc126427948b18
[INFO] running `Command { std: "docker" "start" "-a" "affbb109d4f7ab22dfe535f80e7eac042878b492bfe036a8fecc126427948b18", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking tap v1.0.1
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking wyz v0.2.0
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]    Compiling nom v6.2.1
[INFO] [stderr]     Checking bitvec v0.19.5
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]     Checking thiserror v1.0.29
[INFO] [stderr]     Checking signum v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `space_width`
[INFO] [stdout]   --> src/docs/sysp.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     space_width: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `letter_spacing`
[INFO] [stdout]   --> src/docs/sysp.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     letter_spacing: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `line_distance`
[INFO] [stdout]   --> src/docs/sysp.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     line_distance: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `index_distance`
[INFO] [stdout]   --> src/docs/sysp.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     index_distance: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `margin_left`
[INFO] [stdout]   --> src/docs/sysp.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     margin_left: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `margin_right`
[INFO] [stdout]   --> src/docs/sysp.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     margin_right: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `header`
[INFO] [stdout]   --> src/docs/sysp.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     header: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `footer`
[INFO] [stdout]   --> src/docs/sysp.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     footer: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `page_length`
[INFO] [stdout]   --> src/docs/sysp.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     page_length: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `page_numbering`
[INFO] [stdout]   --> src/docs/sysp.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     page_numbering: Bytes16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `format_options`
[INFO] [stdout]   --> src/docs/sysp.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     format_options: Bytes16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `opts_2`
[INFO] [stdout]   --> src/docs/sysp.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     opts_2: Bytes16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `opts_3`
[INFO] [stdout]   --> src/docs/sysp.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     opts_3: Bytes16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `opts_4`
[INFO] [stdout]   --> src/docs/sysp.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     opts_4: Bytes32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `charsets`
[INFO] [stdout]   --> src/docs/mod.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     charsets: Vec<Cow<'a, str>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `size`
[INFO] [stdout]   --> src/images/imc.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     size: u32,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `width`
[INFO] [stdout]   --> src/images/imc.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     width: u16,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `height`
[INFO] [stdout]   --> src/images/imc.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     height: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `size_of_data`
[INFO] [stdout]   --> src/images/imc.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     size_of_data: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `u4`
[INFO] [stdout]   --> src/images/imc.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     u4: Bytes16,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `u5`
[INFO] [stdout]   --> src/images/imc.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     u5: Bytes32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `u6`
[INFO] [stdout]   --> src/images/imc.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     u6: Bytes32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `space_width`
[INFO] [stdout]   --> src/docs/sysp.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     space_width: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `letter_spacing`
[INFO] [stdout]   --> src/docs/sysp.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     letter_spacing: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `line_distance`
[INFO] [stdout]   --> src/docs/sysp.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     line_distance: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `index_distance`
[INFO] [stdout]   --> src/docs/sysp.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     index_distance: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `margin_left`
[INFO] [stdout]   --> src/docs/sysp.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     margin_left: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `margin_right`
[INFO] [stdout]   --> src/docs/sysp.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 |     margin_right: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `header`
[INFO] [stdout]   --> src/docs/sysp.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     header: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `footer`
[INFO] [stdout]   --> src/docs/sysp.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     footer: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `page_length`
[INFO] [stdout]   --> src/docs/sysp.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     page_length: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `page_numbering`
[INFO] [stdout]   --> src/docs/sysp.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     page_numbering: Bytes16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `format_options`
[INFO] [stdout]   --> src/docs/sysp.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     format_options: Bytes16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `opts_2`
[INFO] [stdout]   --> src/docs/sysp.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     opts_2: Bytes16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `opts_3`
[INFO] [stdout]   --> src/docs/sysp.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     opts_3: Bytes16,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `opts_4`
[INFO] [stdout]   --> src/docs/sysp.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     opts_4: Bytes32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `charsets`
[INFO] [stdout]   --> src/docs/mod.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 25 |     charsets: Vec<Cow<'a, str>>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `size`
[INFO] [stdout]   --> src/images/imc.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     size: u32,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `width`
[INFO] [stdout]   --> src/images/imc.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     width: u16,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `height`
[INFO] [stdout]   --> src/images/imc.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     height: u16,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `size_of_data`
[INFO] [stdout]   --> src/images/imc.rs:32:5
[INFO] [stdout]    |
[INFO] [stdout] 32 |     size_of_data: u32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `u4`
[INFO] [stdout]   --> src/images/imc.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 |     u4: Bytes16,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `u5`
[INFO] [stdout]   --> src/images/imc.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     u5: Bytes32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `u6`
[INFO] [stdout]   --> src/images/imc.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     u6: Bytes32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 22 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.30s
[INFO] running `Command { std: "docker" "inspect" "affbb109d4f7ab22dfe535f80e7eac042878b492bfe036a8fecc126427948b18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "affbb109d4f7ab22dfe535f80e7eac042878b492bfe036a8fecc126427948b18", kill_on_drop: false }`
[INFO] [stdout] affbb109d4f7ab22dfe535f80e7eac042878b492bfe036a8fecc126427948b18