[INFO] fetching crate optbuilder 0.1.2...
[INFO] testing optbuilder-0.1.2 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate optbuilder 0.1.2 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate optbuilder 0.1.2
[INFO] finished tweaking crates.io crate optbuilder 0.1.2
[INFO] tweaked toml for crates.io crate optbuilder 0.1.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate optbuilder 0.1.2 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]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v2.0.106)
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] f4c57ec963350e53c6b67f33c247c606f42249f44527ada4207041753b436cdd
[INFO] running `Command { std: "docker" "start" "-a" "f4c57ec963350e53c6b67f33c247c606f42249f44527ada4207041753b436cdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f4c57ec963350e53c6b67f33c247c606f42249f44527ada4207041753b436cdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4c57ec963350e53c6b67f33c247c606f42249f44527ada4207041753b436cdd", kill_on_drop: false }`
[INFO] [stdout] f4c57ec963350e53c6b67f33c247c606f42249f44527ada4207041753b436cdd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 103d577535becaba7257e7e4ef2fd95a8b057ec720572414c70db58b51fdb183
[INFO] running `Command { std: "docker" "start" "-a" "103d577535becaba7257e7e4ef2fd95a8b057ec720572414c70db58b51fdb183", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling optbuilder v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.74s
[INFO] running `Command { std: "docker" "inspect" "103d577535becaba7257e7e4ef2fd95a8b057ec720572414c70db58b51fdb183", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "103d577535becaba7257e7e4ef2fd95a8b057ec720572414c70db58b51fdb183", kill_on_drop: false }`
[INFO] [stdout] 103d577535becaba7257e7e4ef2fd95a8b057ec720572414c70db58b51fdb183
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 3332bf31bf128feee58229238ae827aac5840058bc7418b51a4e9071de27c143
[INFO] running `Command { std: "docker" "start" "-a" "3332bf31bf128feee58229238ae827aac5840058bc7418b51a4e9071de27c143", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling unicode-ident v1.0.19
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling optbuilder v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `a` and `c` are never read
[INFO] [stdout]   --> tests/lib.rs:11:17
[INFO] [stdout]    |
[INFO] [stdout] 10 |         struct Foo {
[INFO] [stdout]    |                --- fields in this struct
[INFO] [stdout] 11 |             pub a: i32,
[INFO] [stdout]    |                 ^
[INFO] [stdout] ...
[INFO] [stdout] 14 |             pub c: Option<i32>,
[INFO] [stdout]    |                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `a`, `b`, `c`, and `f` are never read
[INFO] [stdout]   --> tests/lib.rs:34:17
[INFO] [stdout]    |
[INFO] [stdout] 33 |         struct Foo {
[INFO] [stdout]    |                --- fields in this struct
[INFO] [stdout] 34 |             pub a: i32,
[INFO] [stdout]    |                 ^
[INFO] [stdout] 35 |             #[optbuilder(skip)]
[INFO] [stdout] 36 |             pub b: Option<i32>,
[INFO] [stdout]    |                 ^
[INFO] [stdout] 37 |             #[optbuilder(skip)]
[INFO] [stdout] 38 |             pub c: Option<i32>,
[INFO] [stdout]    |                 ^
[INFO] [stdout] ...
[INFO] [stdout] 42 |             pub f: Option<f32>,
[INFO] [stdout]    |                 ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 4.45s
[INFO] running `Command { std: "docker" "inspect" "3332bf31bf128feee58229238ae827aac5840058bc7418b51a4e9071de27c143", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3332bf31bf128feee58229238ae827aac5840058bc7418b51a4e9071de27c143", kill_on_drop: false }`
[INFO] [stdout] 3332bf31bf128feee58229238ae827aac5840058bc7418b51a4e9071de27c143
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 1c38632ca0e961e920ff57476097d778b7d777f77867621d73a657c81dc6efcc
[INFO] running `Command { std: "docker" "start" "-a" "1c38632ca0e961e920ff57476097d778b7d777f77867621d73a657c81dc6efcc", kill_on_drop: false }`
[INFO] [stderr] warning: fields `a` and `c` are never read
[INFO] [stderr]   --> tests/lib.rs:11:17
[INFO] [stderr]    |
[INFO] [stderr] 10 |         struct Foo {
[INFO] [stderr]    |                --- fields in this struct
[INFO] [stderr] 11 |             pub a: i32,
[INFO] [stderr]    |                 ^
[INFO] [stderr] ...
[INFO] [stderr] 14 |             pub c: Option<i32>,
[INFO] [stderr]    |                 ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: fields `a`, `b`, `c`, and `f` are never read
[INFO] [stderr]   --> tests/lib.rs:34:17
[INFO] [stderr]    |
[INFO] [stderr] 33 |         struct Foo {
[INFO] [stderr]    |                --- fields in this struct
[INFO] [stderr] 34 |             pub a: i32,
[INFO] [stderr]    |                 ^
[INFO] [stderr] 35 |             #[optbuilder(skip)]
[INFO] [stderr] 36 |             pub b: Option<i32>,
[INFO] [stderr]    |                 ^
[INFO] [stderr] 37 |             #[optbuilder(skip)]
[INFO] [stderr] 38 |             pub c: Option<i32>,
[INFO] [stderr]    |                 ^
[INFO] [stderr] ...
[INFO] [stderr] 42 |             pub f: Option<f32>,
[INFO] [stderr]    |                 ^
[INFO] [stderr] 
[INFO] [stderr] warning: `optbuilder` (test "lib") generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/optbuilder-b22719ef0b928dbd)
[INFO] [stderr]      Running tests/lib.rs (/opt/rustwide/target/debug/deps/lib-272355ce817f3a46)
[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] [stdout] 
[INFO] [stderr]    Doc-tests optbuilder
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::test_many_attrs ... ok
[INFO] [stdout] test tests::test_with_attr ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[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" "1c38632ca0e961e920ff57476097d778b7d777f77867621d73a657c81dc6efcc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c38632ca0e961e920ff57476097d778b7d777f77867621d73a657c81dc6efcc", kill_on_drop: false }`
[INFO] [stdout] 1c38632ca0e961e920ff57476097d778b7d777f77867621d73a657c81dc6efcc