[INFO] fetching crate struct_layout 0.1.0...
[INFO] testing struct_layout-0.1.0 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate struct_layout 0.1.0 into /workspace/builds/worker-3-tc1/source
[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-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate struct_layout 0.1.0 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] 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-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] d0a251f35e8c4292fcf0f5b1ed3a5be9066b9fc0ae99e2f2bc4f2ce8bd9bbea1
[INFO] running `Command { std: "docker" "start" "-a" "d0a251f35e8c4292fcf0f5b1ed3a5be9066b9fc0ae99e2f2bc4f2ce8bd9bbea1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0a251f35e8c4292fcf0f5b1ed3a5be9066b9fc0ae99e2f2bc4f2ce8bd9bbea1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0a251f35e8c4292fcf0f5b1ed3a5be9066b9fc0ae99e2f2bc4f2ce8bd9bbea1", kill_on_drop: false }`
[INFO] [stdout] d0a251f35e8c4292fcf0f5b1ed3a5be9066b9fc0ae99e2f2bc4f2ce8bd9bbea1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 9db765f1f64226dc6de48c671fafe0494cdb35caba6f9f7c1aacdb4e7cdb5204
[INFO] running `Command { std: "docker" "start" "-a" "9db765f1f64226dc6de48c671fafe0494cdb35caba6f9f7c1aacdb4e7cdb5204", kill_on_drop: false }`
[INFO] [stderr]    Compiling struct_layout v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `punct` is never read
[INFO] [stdout]   --> src/lib.rs:86:2
[INFO] [stdout]    |
[INFO] [stdout] 84 | struct KeyValue {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 85 |     ident: Ident,
[INFO] [stdout] 86 |     punct: Punct,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `KeyValue` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[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: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[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]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "9db765f1f64226dc6de48c671fafe0494cdb35caba6f9f7c1aacdb4e7cdb5204", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9db765f1f64226dc6de48c671fafe0494cdb35caba6f9f7c1aacdb4e7cdb5204", kill_on_drop: false }`
[INFO] [stdout] 9db765f1f64226dc6de48c671fafe0494cdb35caba6f9f7c1aacdb4e7cdb5204
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 465a579ae9e22af20079fecce181fbc72abc63d6506da97542c9dc60e4d2945b
[INFO] running `Command { std: "docker" "start" "-a" "465a579ae9e22af20079fecce181fbc72abc63d6506da97542c9dc60e4d2945b", kill_on_drop: false }`
[INFO] [stderr]    Compiling struct_layout v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `punct` is never read
[INFO] [stdout]   --> src/lib.rs:86:2
[INFO] [stdout]    |
[INFO] [stdout] 84 | struct KeyValue {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 85 |     ident: Ident,
[INFO] [stdout] 86 |     punct: Punct,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `KeyValue` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[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: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[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: field `punct` is never read
[INFO] [stdout]   --> src/lib.rs:86:2
[INFO] [stdout]    |
[INFO] [stdout] 84 | struct KeyValue {
[INFO] [stdout]    |        -------- field in this struct
[INFO] [stdout] 85 |     ident: Ident,
[INFO] [stdout] 86 |     punct: Punct,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `KeyValue` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[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: this message is not used as a format string, but will be in Rust 2021
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[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]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.73s
[INFO] running `Command { std: "docker" "inspect" "465a579ae9e22af20079fecce181fbc72abc63d6506da97542c9dc60e4d2945b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "465a579ae9e22af20079fecce181fbc72abc63d6506da97542c9dc60e4d2945b", kill_on_drop: false }`
[INFO] [stdout] 465a579ae9e22af20079fecce181fbc72abc63d6506da97542c9dc60e4d2945b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] c060fd4113334556977bb925de812088cbef47439efe0e3842006cd7098545b4
[INFO] running `Command { std: "docker" "start" "-a" "c060fd4113334556977bb925de812088cbef47439efe0e3842006cd7098545b4", kill_on_drop: false }`
[INFO] [stderr] warning: field `punct` is never read
[INFO] [stderr]   --> src/lib.rs:86:2
[INFO] [stderr]    |
[INFO] [stderr] 84 | struct KeyValue {
[INFO] [stderr]    |        -------- field in this struct
[INFO] [stderr] 85 |     ident: Ident,
[INFO] [stderr] 86 |     punct: Punct,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `KeyValue` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[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: this message is not used as a format string, but will be in Rust 2021
[INFO] [stderr]     = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[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: `struct_layout` (lib) generated 2 warnings (run `cargo fix --lib -p struct_layout` to apply 1 suggestion)
[INFO] [stderr] warning: `struct_layout` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/struct_layout-e29e9ccc938835d4)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests struct_layout
[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] [stdout] running 12 tests
[INFO] [stdout] test src/lib.rs - compile_fail (line 808) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - compile_fail (line 856) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - compile_fail (line 801) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - compile_fail (line 824) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - compile_fail (line 815) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - compile_fail (line 844) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - (line 8) ... ok
[INFO] [stdout] test src/lib.rs - (line 49) ... ok
[INFO] [stdout] test src/lib.rs - compile_fail (line 834) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - compile_fail (line 862) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - (line 64) ... ok
[INFO] [stdout] test src/lib.rs - (line 30) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 12 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.66s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c060fd4113334556977bb925de812088cbef47439efe0e3842006cd7098545b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c060fd4113334556977bb925de812088cbef47439efe0e3842006cd7098545b4", kill_on_drop: false }`
[INFO] [stdout] c060fd4113334556977bb925de812088cbef47439efe0e3842006cd7098545b4