[INFO] fetching crate random_variant 0.2.7...
[INFO] testing random_variant-0.2.7 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate random_variant 0.2.7 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate random_variant 0.2.7
[INFO] finished tweaking crates.io crate random_variant 0.2.7
[INFO] tweaked toml for crates.io crate random_variant 0.2.7 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate random_variant 0.2.7 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "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" "+caccb4d0368bd918ef6668af8e13834d07040417" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 49 packages to latest compatible versions
[INFO] [stderr]       Adding heapless v0.7.17 (available: v0.9.1)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded random_variant_macro v0.2.0
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bea4df6949184134f9004d3072d9c41aee1848ac0a753a1051af8de17e24cadd
[INFO] running `Command { std: "docker" "start" "-a" "bea4df6949184134f9004d3072d9c41aee1848ac0a753a1051af8de17e24cadd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bea4df6949184134f9004d3072d9c41aee1848ac0a753a1051af8de17e24cadd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bea4df6949184134f9004d3072d9c41aee1848ac0a753a1051af8de17e24cadd", kill_on_drop: false }`
[INFO] [stdout] bea4df6949184134f9004d3072d9c41aee1848ac0a753a1051af8de17e24cadd
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f76c3b349c9338b36e88277bff7e81eaa5c23e48fab23a1c9fdad0207d34136d
[INFO] running `Command { std: "docker" "start" "-a" "f76c3b349c9338b36e88277bff7e81eaa5c23e48fab23a1c9fdad0207d34136d", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling random_variant_macro v0.2.0
[INFO] [stderr]    Compiling random_variant v0.2.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std_impls::*`
[INFO] [stdout]  --> src/lib.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use std_impls::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.33s
[INFO] running `Command { std: "docker" "inspect" "f76c3b349c9338b36e88277bff7e81eaa5c23e48fab23a1c9fdad0207d34136d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f76c3b349c9338b36e88277bff7e81eaa5c23e48fab23a1c9fdad0207d34136d", kill_on_drop: false }`
[INFO] [stdout] f76c3b349c9338b36e88277bff7e81eaa5c23e48fab23a1c9fdad0207d34136d
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 026a245e9c18f9ab53458ac919b604c1083953a84bb63f11fc5a633ee5e29080
[INFO] running `Command { std: "docker" "start" "-a" "026a245e9c18f9ab53458ac919b604c1083953a84bb63f11fc5a633ee5e29080", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std_impls::*`
[INFO] [stdout]  --> src/lib.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use std_impls::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling random_variant v0.2.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std_impls::*`
[INFO] [stdout]  --> src/lib.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub use std_impls::*;
[INFO] [stdout]   |         ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Message` is never constructed
[INFO] [stdout]   --> src/test.rs:43:16
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub struct Message {
[INFO] [stdout]    |                ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `SecondTop` is never used
[INFO] [stdout]   --> src/test.rs:52:14
[INFO] [stdout]    |
[INFO] [stdout] 52 |     pub enum SecondTop {
[INFO] [stdout]    |              ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Top` is never used
[INFO] [stdout]   --> src/test.rs:59:14
[INFO] [stdout]    |
[INFO] [stdout] 59 |     pub enum Top {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Nested` is never used
[INFO] [stdout]   --> src/test.rs:65:14
[INFO] [stdout]    |
[INFO] [stdout] 65 |     pub enum Nested {
[INFO] [stdout]    |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TestUnnamed3` is never constructed
[INFO] [stdout]   --> src/test.rs:77:16
[INFO] [stdout]    |
[INFO] [stdout] 77 |     pub struct TestUnnamed3(pub u16);
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `TestUnnamed1` is never used
[INFO] [stdout]   --> src/test.rs:83:14
[INFO] [stdout]    |
[INFO] [stdout] 83 |     pub enum TestUnnamed1 {
[INFO] [stdout]    |              ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TestUnnamed2` is never constructed
[INFO] [stdout]   --> src/test.rs:90:16
[INFO] [stdout]    |
[INFO] [stdout] 90 |     pub struct TestUnnamed2(u16, u32, u64);
[INFO] [stdout]    |                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Gen1` is never constructed
[INFO] [stdout]   --> src/test.rs:93:16
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub struct Gen1<A: RandomVariant + Clone>(A);
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Gen2` is never constructed
[INFO] [stdout]   --> src/test.rs:96:16
[INFO] [stdout]    |
[INFO] [stdout] 96 |     pub struct Gen2<A: RandomVariant + Clone, B: RandomVariant + Clone>(A, B);
[INFO] [stdout]    |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Generic2` is never used
[INFO] [stdout]   --> src/test.rs:99:14
[INFO] [stdout]    |
[INFO] [stdout] 99 |     pub enum Generic2 {
[INFO] [stdout]    |              ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `TestNamed1` is never used
[INFO] [stdout]    --> src/test.rs:105:14
[INFO] [stdout]     |
[INFO] [stdout] 105 |     pub enum TestNamed1 {
[INFO] [stdout]     |              ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 9.76s
[INFO] running `Command { std: "docker" "inspect" "026a245e9c18f9ab53458ac919b604c1083953a84bb63f11fc5a633ee5e29080", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "026a245e9c18f9ab53458ac919b604c1083953a84bb63f11fc5a633ee5e29080", kill_on_drop: false }`
[INFO] [stdout] 026a245e9c18f9ab53458ac919b604c1083953a84bb63f11fc5a633ee5e29080
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 80663f4910397008f223376eccacfa66c48807d889d87f559b29cd5771ad9211
[INFO] running `Command { std: "docker" "start" "-a" "80663f4910397008f223376eccacfa66c48807d889d87f559b29cd5771ad9211", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std_impls::*`
[INFO] [stderr]  --> src/lib.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub use std_impls::*;
[INFO] [stderr]   |         ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `random_variant` (lib) generated 1 warning (run `cargo fix --lib -p random_variant` to apply 1 suggestion)
[INFO] [stderr] warning: struct `Message` is never constructed
[INFO] [stderr]   --> src/test.rs:43:16
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub struct Message {
[INFO] [stderr]    |                ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `SecondTop` is never used
[INFO] [stderr]   --> src/test.rs:52:14
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub enum SecondTop {
[INFO] [stderr]    |              ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Top` is never used
[INFO] [stderr]   --> src/test.rs:59:14
[INFO] [stderr]    |
[INFO] [stderr] 59 |     pub enum Top {
[INFO] [stderr]    |              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Nested` is never used
[INFO] [stderr]   --> src/test.rs:65:14
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub enum Nested {
[INFO] [stderr]    |              ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `TestUnnamed3` is never constructed
[INFO] [stderr]   --> src/test.rs:77:16
[INFO] [stderr]    |
[INFO] [stderr] 77 |     pub struct TestUnnamed3(pub u16);
[INFO] [stderr]    |                ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `TestUnnamed1` is never used
[INFO] [stderr]   --> src/test.rs:83:14
[INFO] [stderr]    |
[INFO] [stderr] 83 |     pub enum TestUnnamed1 {
[INFO] [stderr]    |              ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `TestUnnamed2` is never constructed
[INFO] [stderr]   --> src/test.rs:90:16
[INFO] [stderr]    |
[INFO] [stderr] 90 |     pub struct TestUnnamed2(u16, u32, u64);
[INFO] [stderr]    |                ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Gen1` is never constructed
[INFO] [stderr]   --> src/test.rs:93:16
[INFO] [stderr]    |
[INFO] [stderr] 93 |     pub struct Gen1<A: RandomVariant + Clone>(A);
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Gen2` is never constructed
[INFO] [stderr]   --> src/test.rs:96:16
[INFO] [stderr]    |
[INFO] [stderr] 96 |     pub struct Gen2<A: RandomVariant + Clone, B: RandomVariant + Clone>(A, B);
[INFO] [stderr]    |                ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Generic2` is never used
[INFO] [stderr]   --> src/test.rs:99:14
[INFO] [stderr]    |
[INFO] [stderr] 99 |     pub enum Generic2 {
[INFO] [stderr]    |              ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `TestNamed1` is never used
[INFO] [stderr]    --> src/test.rs:105:14
[INFO] [stderr]     |
[INFO] [stderr] 105 |     pub enum TestNamed1 {
[INFO] [stderr]     |              ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `random_variant` (lib test) generated 12 warnings (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/random_variant-4b8f98c344e15efb)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test test::tests::small_example ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests random_variant
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "80663f4910397008f223376eccacfa66c48807d889d87f559b29cd5771ad9211", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80663f4910397008f223376eccacfa66c48807d889d87f559b29cd5771ad9211", kill_on_drop: false }`
[INFO] [stdout] 80663f4910397008f223376eccacfa66c48807d889d87f559b29cd5771ad9211