[INFO] fetching crate prune_derive 0.1.6...
[INFO] checking prune_derive-0.1.6 against master#a836d9b6413d9d593be6c09463ff8c4c70e56599 for pr-84037
[INFO] extracting crate prune_derive 0.1.6 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate prune_derive 0.1.6 on toolchain a836d9b6413d9d593be6c09463ff8c4c70e56599
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate prune_derive 0.1.6
[INFO] finished tweaking crates.io crate prune_derive 0.1.6
[INFO] tweaked toml for crates.io crate prune_derive 0.1.6 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b76f2b602a8e01079b87cf3fe59d77e72cc9ab1039eb5e7e98bf46dca006f81
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3b76f2b602a8e01079b87cf3fe59d77e72cc9ab1039eb5e7e98bf46dca006f81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b76f2b602a8e01079b87cf3fe59d77e72cc9ab1039eb5e7e98bf46dca006f81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b76f2b602a8e01079b87cf3fe59d77e72cc9ab1039eb5e7e98bf46dca006f81", kill_on_drop: false }`
[INFO] [stdout] 3b76f2b602a8e01079b87cf3fe59d77e72cc9ab1039eb5e7e98bf46dca006f81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c28a58304aca877733e86760e606ff4571af3c4d685d861e2101f45924c81b6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "3c28a58304aca877733e86760e606ff4571af3c4d685d861e2101f45924c81b6", kill_on_drop: false }`
[INFO] [stderr]    Compiling regex-syntax v0.6.23
[INFO] [stderr]     Checking proc-macro2 v0.4.30
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking prune v0.1.6
[INFO] [stderr]    Compiling aho-corasick v0.7.15
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking prune_derive v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling regex v1.4.6
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]   --> src/lib.rs:61:62
[INFO] [stdout]    |
[INFO] [stdout] 61 |         _ => panic!("#[derive(Prune)] Not support this type: {:?}"),
[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 when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]    |
[INFO] [stdout] 61 |         _ => panic!("#[derive(Prune)] Not support this type: {:?}", ...),
[INFO] [stdout]    |                                                                   ^^^^^
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]    |
[INFO] [stdout] 61 |         _ => panic!("{}", "#[derive(Prune)] Not support this type: {:?}"),
[INFO] [stdout]    |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]   --> src/lib.rs:61:62
[INFO] [stdout]    |
[INFO] [stdout] 61 |         _ => panic!("#[derive(Prune)] Not support this type: {:?}"),
[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 when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]    |
[INFO] [stdout] 61 |         _ => panic!("#[derive(Prune)] Not support this type: {:?}", ...),
[INFO] [stdout]    |                                                                   ^^^^^
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]    |
[INFO] [stdout] 61 |         _ => panic!("{}", "#[derive(Prune)] Not support this type: {:?}"),
[INFO] [stdout]    |                     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message contains an unused formatting placeholder
[INFO] [stdout]   --> src/lib.rs:61:62
[INFO] [stdout]    |
[INFO] [stdout] 61 |         _ => panic!("#[derive(Prune)] Not support this type: {:?}"),
[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 when given without arguments, but will be in Rust 2021
[INFO] [stdout] help: add the missing argument
[INFO] [stdout]    |
[INFO] [stdout] 61 |         _ => panic!("#[derive(Prune)] Not support this type: {:?}", ...),
[INFO] [stdout]    |                                                                   ^^^^^
[INFO] [stdout] help: or add a "{}" format string to use the message literally
[INFO] [stdout]    |
[INFO] [stdout] 61 |         _ => panic!("{}", "#[derive(Prune)] Not support this type: {:?}"),
[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 31.64s
[INFO] running `Command { std: "docker" "inspect" "3c28a58304aca877733e86760e606ff4571af3c4d685d861e2101f45924c81b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c28a58304aca877733e86760e606ff4571af3c4d685d861e2101f45924c81b6", kill_on_drop: false }`
[INFO] [stdout] 3c28a58304aca877733e86760e606ff4571af3c4d685d861e2101f45924c81b6