[INFO] fetching crate struct_field_names 0.2.1...
[INFO] testing struct_field_names-0.2.1 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate struct_field_names 0.2.1 into /workspace/builds/worker-90/source
[INFO] validating manifest of crates.io crate struct_field_names 0.2.1 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate struct_field_names 0.2.1
[INFO] finished tweaking crates.io crate struct_field_names 0.2.1
[INFO] tweaked toml for crates.io crate struct_field_names 0.2.1 written to /workspace/builds/worker-90/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 600edce04bc65172ec2438e66c007b1431fc3b01de09a86e4578b53dffcb6710
[INFO] running `Command { std: "docker" "start" "-a" "600edce04bc65172ec2438e66c007b1431fc3b01de09a86e4578b53dffcb6710", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "600edce04bc65172ec2438e66c007b1431fc3b01de09a86e4578b53dffcb6710", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "600edce04bc65172ec2438e66c007b1431fc3b01de09a86e4578b53dffcb6710", kill_on_drop: false }`
[INFO] [stdout] 600edce04bc65172ec2438e66c007b1431fc3b01de09a86e4578b53dffcb6710
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2e2ce46ce01510dbfd040a53efc6939ca8c339962456084584de65e5b6b8197
[INFO] running `Command { std: "docker" "start" "-a" "c2e2ce46ce01510dbfd040a53efc6939ca8c339962456084584de65e5b6b8197", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling struct_field_names v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.91s
[INFO] running `Command { std: "docker" "inspect" "c2e2ce46ce01510dbfd040a53efc6939ca8c339962456084584de65e5b6b8197", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2e2ce46ce01510dbfd040a53efc6939ca8c339962456084584de65e5b6b8197", kill_on_drop: false }`
[INFO] [stdout] c2e2ce46ce01510dbfd040a53efc6939ca8c339962456084584de65e5b6b8197
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 534221325d09572f9ae81a1fea85cd6d1c9bf56b093797925c659492d33c1ac6
[INFO] running `Command { std: "docker" "start" "-a" "534221325d09572f9ae81a1fea85cd6d1c9bf56b093797925c659492d33c1ac6", kill_on_drop: false }`
[INFO] [stderr]    Compiling struct_field_names v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "534221325d09572f9ae81a1fea85cd6d1c9bf56b093797925c659492d33c1ac6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "534221325d09572f9ae81a1fea85cd6d1c9bf56b093797925c659492d33c1ac6", kill_on_drop: false }`
[INFO] [stdout] 534221325d09572f9ae81a1fea85cd6d1c9bf56b093797925c659492d33c1ac6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-90/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:e8397a04204aaf8b9f284182a6f9e27a3c2e67044d0943b4415b160bfc957681" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0593d09d15036a33432b43ba910e53cb3c359c558f9684a578ecccfe2fd6f86f
[INFO] running `Command { std: "docker" "start" "-a" "0593d09d15036a33432b43ba910e53cb3c359c558f9684a578ecccfe2fd6f86f", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/struct_field_names-784d5a19d28be9e3)
[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] [stderr]      Running tests/tests.rs (/opt/rustwide/target/debug/deps/tests-9fcbd866191e5456)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test not_a_test_field_visibility ... ok
[INFO] [stdout] test not_a_test_skip_attribute ... ok
[INFO] [stdout] test test_field_names ... ok
[INFO] [stdout] test test_variant_names ... ok
[INFO] [stdout] test test_with_generic_struct ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests struct_field_names
[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" "0593d09d15036a33432b43ba910e53cb3c359c558f9684a578ecccfe2fd6f86f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0593d09d15036a33432b43ba910e53cb3c359c558f9684a578ecccfe2fd6f86f", kill_on_drop: false }`
[INFO] [stdout] 0593d09d15036a33432b43ba910e53cb3c359c558f9684a578ecccfe2fd6f86f