[INFO] fetching crate thisctx 0.4.0...
[INFO] checking thisctx-0.4.0 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate thisctx 0.4.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate thisctx 0.4.0
[INFO] finished tweaking crates.io crate thisctx 0.4.0
[INFO] tweaked toml for crates.io crate thisctx 0.4.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate thisctx 0.4.0 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 8 packages to latest compatible versions
[INFO] [stderr]       Adding thiserror v1.0.69 (available: v2.0.12)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded thisctx_impl v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 09330c1448184958f511dab79e31974d4a55e61f5cc8bd0c057c0c03c2e834cb
[INFO] running `Command { std: "docker" "start" "-a" "09330c1448184958f511dab79e31974d4a55e61f5cc8bd0c057c0c03c2e834cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09330c1448184958f511dab79e31974d4a55e61f5cc8bd0c057c0c03c2e834cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09330c1448184958f511dab79e31974d4a55e61f5cc8bd0c057c0c03c2e834cb", kill_on_drop: false }`
[INFO] [stdout] 09330c1448184958f511dab79e31974d4a55e61f5cc8bd0c057c0c03c2e834cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 495596aa5ad92134f00b287d08482dfc03ab19ae3fb6a464ca6b501b0ee4175f
[INFO] running `Command { std: "docker" "start" "-a" "495596aa5ad92134f00b287d08482dfc03ab19ae3fb6a464ca6b501b0ee4175f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling thiserror-impl v1.0.69
[INFO] [stderr]    Compiling thisctx_impl v0.4.0
[INFO] [stderr]     Checking thisctx v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking thiserror v1.0.69
[INFO] [stdout] warning: enum `Error` is never used
[INFO] [stdout]  --> tests/no_std.rs:6:6
[INFO] [stdout]   |
[INFO] [stdout] 6 | enum Error {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> tests/attr_visibility.rs:13:58
[INFO] [stdout]    |
[INFO] [stdout] 13 |         PubVariant(#[thisctx(visibility = "pub(crate)")] i32),
[INFO] [stdout]    |         ---------- field in this variant                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[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] 13 -         PubVariant(#[thisctx(visibility = "pub(crate)")] i32),
[INFO] [stdout] 13 +         PubVariant(#[thisctx(visibility = "pub(crate)")] ()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> tests/attr_visibility.rs:14:25
[INFO] [stdout]    |
[INFO] [stdout] 14 |         PubCrateVariant(i32),
[INFO] [stdout]    |         --------------- ^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Error` has a derived impl for the trait `Debug`, 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] 14 -         PubCrateVariant(i32),
[INFO] [stdout] 14 +         PubCrateVariant(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `HelloWorld` is never constructed
[INFO] [stdout]  --> tests/impl_trait.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | struct HelloWorld(&'static str);
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> tests/attr_module.rs:6:14
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Variant1(String),
[INFO] [stdout]   |     -------- ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[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] 6 -     Variant1(String),
[INFO] [stdout] 6 +     Variant1(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> tests/attr_module.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 |     Variant2(i32),
[INFO] [stdout]   |     -------- ^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[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] 7 -     Variant2(i32),
[INFO] [stdout] 7 +     Variant2(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> tests/attr_module.rs:13:14
[INFO] [stdout]    |
[INFO] [stdout] 13 |     Variant1(String),
[INFO] [stdout]    |     -------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[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] 13 -     Variant1(String),
[INFO] [stdout] 13 +     Variant1(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> tests/attr_module.rs:14:14
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Variant2(i32),
[INFO] [stdout]    |     -------- ^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[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] 14 -     Variant2(i32),
[INFO] [stdout] 14 +     Variant2(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> tests/attr_generic.rs:7:22
[INFO] [stdout]   |
[INFO] [stdout] 7 |     GeneratedGeneric(String),
[INFO] [stdout]   |     ---------------- ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[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] 7 -     GeneratedGeneric(String),
[INFO] [stdout] 7 +     GeneratedGeneric(()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `0`, `1`, and `2` are never read
[INFO] [stdout]  --> tests/attr_generic.rs:9:31
[INFO] [stdout]   |
[INFO] [stdout] 9 |     NoGeneratedGenericOnField(String, #[thisctx(no_generic)] String, String),
[INFO] [stdout]   |     ------------------------- ^^^^^^                         ^^^^^^  ^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     fields in this variant
[INFO] [stdout]   |
[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] 9 -     NoGeneratedGenericOnField(String, #[thisctx(no_generic)] String, String),
[INFO] [stdout] 9 +     NoGeneratedGenericOnField((), #[thisctx(no_generic)] (), ()),
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> tests/attr_generic.rs:10:24
[INFO] [stdout]    |
[INFO] [stdout] 10 |     NoGeneratedGeneric(String),
[INFO] [stdout]    |     ------------------ ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[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] 10 -     NoGeneratedGeneric(String),
[INFO] [stdout] 10 +     NoGeneratedGeneric(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `EmptyGeneric` is never used
[INFO] [stdout]  --> tests/generics.rs:4:6
[INFO] [stdout]   |
[INFO] [stdout] 4 | enum EmptyGeneric<T1, T2> {
[INFO] [stdout]   |      ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `EmptyLifetime` is never used
[INFO] [stdout]   --> tests/generics.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | enum EmptyLifetime<'a, 'b> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `BoundedGeneric` is never used
[INFO] [stdout]   --> tests/generics.rs:16:6
[INFO] [stdout]    |
[INFO] [stdout] 16 | enum BoundedGeneric<T1: Into<String>, T2>
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `BoundedLifetime` is never used
[INFO] [stdout]   --> tests/generics.rs:26:6
[INFO] [stdout]    |
[INFO] [stdout] 26 | enum BoundedLifetime<'a, 'b: 'a> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `UnusedLifetime` is never used
[INFO] [stdout]   --> tests/generics.rs:32:6
[INFO] [stdout]    |
[INFO] [stdout] 32 | enum UnusedLifetime<'a, 'b> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `UnusedGeneric` is never used
[INFO] [stdout]   --> tests/generics.rs:38:6
[INFO] [stdout]    |
[INFO] [stdout] 38 | enum UnusedGeneric<T1, T2> {
[INFO] [stdout]    |      ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `1` is never read
[INFO] [stdout]   --> tests/generics.rs:55:35
[INFO] [stdout]    |
[INFO] [stdout] 55 | struct GenericDefault<T1, T2>(T1, String, T2);
[INFO] [stdout]    |        --------------             ^^^^^^
[INFO] [stdout]    |        |
[INFO] [stdout]    |        field in this struct
[INFO] [stdout]    |
[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] 55 - struct GenericDefault<T1, T2>(T1, String, T2);
[INFO] [stdout] 55 + struct GenericDefault<T1, T2>(T1, (), T2);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.96s
[INFO] running `Command { std: "docker" "inspect" "495596aa5ad92134f00b287d08482dfc03ab19ae3fb6a464ca6b501b0ee4175f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "495596aa5ad92134f00b287d08482dfc03ab19ae3fb6a464ca6b501b0ee4175f", kill_on_drop: false }`
[INFO] [stdout] 495596aa5ad92134f00b287d08482dfc03ab19ae3fb6a464ca6b501b0ee4175f