[INFO] fetching crate const_panic_proc_macros 0.2.12...
[INFO] checking const_panic_proc_macros-0.2.12 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate const_panic_proc_macros 0.2.12 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate const_panic_proc_macros 0.2.12
[INFO] finished tweaking crates.io crate const_panic_proc_macros 0.2.12
[INFO] tweaked toml for crates.io crate const_panic_proc_macros 0.2.12 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate const_panic_proc_macros 0.2.12 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bd5d3d2a1a99c9bbb8addd7015ec15321f603f3cae748d07fa2d8b0a32d9dd56
[INFO] running `Command { std: "docker" "start" "-a" "bd5d3d2a1a99c9bbb8addd7015ec15321f603f3cae748d07fa2d8b0a32d9dd56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd5d3d2a1a99c9bbb8addd7015ec15321f603f3cae748d07fa2d8b0a32d9dd56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd5d3d2a1a99c9bbb8addd7015ec15321f603f3cae748d07fa2d8b0a32d9dd56", kill_on_drop: false }`
[INFO] [stdout] bd5d3d2a1a99c9bbb8addd7015ec15321f603f3cae748d07fa2d8b0a32d9dd56
[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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 024023d87ff85e3274d952876012ab38af758ab9acbb911e5ed75d5d7cafaff9
[INFO] running `Command { std: "docker" "start" "-a" "024023d87ff85e3274d952876012ab38af758ab9acbb911e5ed75d5d7cafaff9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]     Checking unicode-ident v1.0.18
[INFO] [stderr]     Checking unicode-xid v0.2.6
[INFO] [stderr]     Checking quote v1.0.40
[INFO] [stderr]     Checking syn v2.0.106
[INFO] [stderr]     Checking const_panic_proc_macros v0.2.12 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `vis` is never read
[INFO] [stdout]   --> src/datastructure.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub struct DataStructure<'a> {
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] 21 |     pub vis: &'a Visibility,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DataStructure` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `variant` is never read
[INFO] [stdout]    --> src/datastructure.rs:121:9
[INFO] [stdout]     |
[INFO] [stdout] 120 | pub struct FieldIndex {
[INFO] [stdout]     |            ---------- field in this struct
[INFO] [stdout] 121 |     pub variant: usize,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FieldIndex` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/derive_debug/attribute_parsing.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |     Variant(usize, &'a Struct<'a>),
[INFO] [stdout]    |     ------- ^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ParseCtx` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 29 -     Variant(usize, &'a Struct<'a>),
[INFO] [stdout] 29 +     Variant((), ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/derive_debug/attribute_parsing.rs:30:11
[INFO] [stdout]    |
[INFO] [stdout] 30 |     Field(&'a Field<'a>),
[INFO] [stdout]    |     ----- ^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ParseCtx` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 30 -     Field(&'a Field<'a>),
[INFO] [stdout] 30 +     Field(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `vis` is never read
[INFO] [stdout]   --> src/datastructure.rs:21:9
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub struct DataStructure<'a> {
[INFO] [stdout]    |            ------------- field in this struct
[INFO] [stdout] 21 |     pub vis: &'a Visibility,
[INFO] [stdout]    |         ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `DataStructure` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `variant` is never read
[INFO] [stdout]    --> src/datastructure.rs:121:9
[INFO] [stdout]     |
[INFO] [stdout] 120 | pub struct FieldIndex {
[INFO] [stdout]     |            ---------- field in this struct
[INFO] [stdout] 121 |     pub variant: usize,
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `FieldIndex` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0` and `1` are never read
[INFO] [stdout]   --> src/derive_debug/attribute_parsing.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |     Variant(usize, &'a Struct<'a>),
[INFO] [stdout]    |     ------- ^^^^^  ^^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     fields in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ParseCtx` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the fields to be of unit type to suppress this warning while preserving the field numbering, or remove the fields
[INFO] [stdout]    |
[INFO] [stdout] 29 -     Variant(usize, &'a Struct<'a>),
[INFO] [stdout] 29 +     Variant((), ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/derive_debug/attribute_parsing.rs:30:11
[INFO] [stdout]    |
[INFO] [stdout] 30 |     Field(&'a Field<'a>),
[INFO] [stdout]    |     ----- ^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ParseCtx` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 30 -     Field(&'a Field<'a>),
[INFO] [stdout] 30 +     Field(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.72s
[INFO] running `Command { std: "docker" "inspect" "024023d87ff85e3274d952876012ab38af758ab9acbb911e5ed75d5d7cafaff9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "024023d87ff85e3274d952876012ab38af758ab9acbb911e5ed75d5d7cafaff9", kill_on_drop: false }`
[INFO] [stdout] 024023d87ff85e3274d952876012ab38af758ab9acbb911e5ed75d5d7cafaff9