[INFO] fetching crate struct_layout 0.1.0...
[INFO] testing struct_layout-0.1.0 against master#99e3aef02079e9c10583638520cd0c134dc3a01d for pr-85530
[INFO] extracting crate struct_layout 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate struct_layout 0.1.0 on toolchain 99e3aef02079e9c10583638520cd0c134dc3a01d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate struct_layout 0.1.0
[INFO] finished tweaking crates.io crate struct_layout 0.1.0
[INFO] tweaked toml for crates.io crate struct_layout 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ffcd4d1502abc15272a916ecdaea95767680b14d2387a96f9f0cae12cde7cb8
[INFO] running `Command { std: "docker" "start" "-a" "1ffcd4d1502abc15272a916ecdaea95767680b14d2387a96f9f0cae12cde7cb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ffcd4d1502abc15272a916ecdaea95767680b14d2387a96f9f0cae12cde7cb8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ffcd4d1502abc15272a916ecdaea95767680b14d2387a96f9f0cae12cde7cb8", kill_on_drop: false }`
[INFO] [stdout] 1ffcd4d1502abc15272a916ecdaea95767680b14d2387a96f9f0cae12cde7cb8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 362ea6d550bf70e9256b54da4701fa80fb040f530964f53490948608e34958bc
[INFO] running `Command { std: "docker" "start" "-a" "362ea6d550bf70e9256b54da4701fa80fb040f530964f53490948608e34958bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling struct_layout v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: panic message contains braces
[INFO] [stdout]    --> src/lib.rs:514:84
[INFO] [stdout]     |
[INFO] [stdout] 514 |         None => panic!("parse struct: tuple syntax not supported, struct layout requires {{}} to declare the fields"),
[INFO] [stdout]     |                                                                                          ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 514 |         None => panic!("{}", "parse struct: tuple syntax not supported, struct layout requires {{}} to declare the fields"),
[INFO] [stdout]     |                        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "362ea6d550bf70e9256b54da4701fa80fb040f530964f53490948608e34958bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "362ea6d550bf70e9256b54da4701fa80fb040f530964f53490948608e34958bc", kill_on_drop: false }`
[INFO] [stdout] 362ea6d550bf70e9256b54da4701fa80fb040f530964f53490948608e34958bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d60bf153b69ff25c4ebd39388ea8c7ac890b812cda75229a0fbf3038e7283d3e
[INFO] running `Command { std: "docker" "start" "-a" "d60bf153b69ff25c4ebd39388ea8c7ac890b812cda75229a0fbf3038e7283d3e", kill_on_drop: false }`
[INFO] [stdout] warning: panic message contains braces
[INFO] [stdout]    --> src/lib.rs:514:84
[INFO] [stdout]     |
[INFO] [stdout] 514 |         None => panic!("parse struct: tuple syntax not supported, struct layout requires {{}} to declare the fields"),
[INFO] [stdout]     |                                                                                          ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 514 |         None => panic!("{}", "parse struct: tuple syntax not supported, struct layout requires {{}} to declare the fields"),
[INFO] [stdout]     |                        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling struct_layout v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains braces
[INFO] [stdout]    --> src/lib.rs:514:84
[INFO] [stdout]     |
[INFO] [stdout] 514 |         None => panic!("parse struct: tuple syntax not supported, struct layout requires {{}} to declare the fields"),
[INFO] [stdout]     |                                                                                          ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout] help: add a "{}" format string to use the message literally
[INFO] [stdout]     |
[INFO] [stdout] 514 |         None => panic!("{}", "parse struct: tuple syntax not supported, struct layout requires {{}} to declare the fields"),
[INFO] [stdout]     |                        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "d60bf153b69ff25c4ebd39388ea8c7ac890b812cda75229a0fbf3038e7283d3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d60bf153b69ff25c4ebd39388ea8c7ac890b812cda75229a0fbf3038e7283d3e", kill_on_drop: false }`
[INFO] [stdout] d60bf153b69ff25c4ebd39388ea8c7ac890b812cda75229a0fbf3038e7283d3e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+99e3aef02079e9c10583638520cd0c134dc3a01d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] cd222bc8b15b6c5adadb69a24c259710d20f3752dbc4ff919fa63d40b7bdf3ba
[INFO] running `Command { std: "docker" "start" "-a" "cd222bc8b15b6c5adadb69a24c259710d20f3752dbc4ff919fa63d40b7bdf3ba", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: panic message contains braces
[INFO] [stderr]    --> src/lib.rs:514:84
[INFO] [stderr]     |
[INFO] [stderr] 514 |         None => panic!("parse struct: tuple syntax not supported, struct layout requires {{}} to declare the fields"),
[INFO] [stderr]     |                                                                                          ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stderr]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stderr] help: add a "{}" format string to use the message literally
[INFO] [stderr]     |
[INFO] [stderr] 514 |         None => panic!("{}", "parse struct: tuple syntax not supported, struct layout requires {{}} to declare the fields"),
[INFO] [stderr]     |                        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: panic message contains braces
[INFO] [stderr]    --> src/lib.rs:514:84
[INFO] [stderr]     |
[INFO] [stderr] 514 |         None => panic!("parse struct: tuple syntax not supported, struct layout requires {{}} to declare the fields"),
[INFO] [stderr]     |                                                                                          ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stderr]     = note: this message is not used as a format string, but will be in Rust 2021
[INFO] [stderr] help: add a "{}" format string to use the message literally
[INFO] [stderr]     |
[INFO] [stderr] 514 |         None => panic!("{}", "parse struct: tuple syntax not supported, struct layout requires {{}} to declare the fields"),
[INFO] [stderr]     |                        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.20s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/struct_layout-fa0a82ec8f216008)
[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]    Doc-tests struct_layout
[INFO] [stdout] 
[INFO] [stdout] running 12 tests
[INFO] [stdout] test src/lib.rs - compile_fail (line 824) ... ok
[INFO] [stdout] test src/lib.rs - compile_fail (line 801) ... ok
[INFO] [stdout] test src/lib.rs - compile_fail (line 815) ... ok
[INFO] [stdout] test src/lib.rs - compile_fail (line 862) ... ok
[INFO] [stdout] test src/lib.rs - compile_fail (line 808) ... ok
[INFO] [stdout] test src/lib.rs - compile_fail (line 856) ... ok
[INFO] [stdout] test src/lib.rs - compile_fail (line 834) ... ok
[INFO] [stdout] test src/lib.rs - compile_fail (line 844) ... ok
[INFO] [stdout] test src/lib.rs - (line 30) ... ok
[INFO] [stdout] test src/lib.rs - (line 8) ... ok
[INFO] [stdout] test src/lib.rs - (line 64) ... ok
[INFO] [stdout] test src/lib.rs - (line 49) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.54s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "cd222bc8b15b6c5adadb69a24c259710d20f3752dbc4ff919fa63d40b7bdf3ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd222bc8b15b6c5adadb69a24c259710d20f3752dbc4ff919fa63d40b7bdf3ba", kill_on_drop: false }`
[INFO] [stdout] cd222bc8b15b6c5adadb69a24c259710d20f3752dbc4ff919fa63d40b7bdf3ba