[INFO] fetching crate pedronauck-subject-derive 0.0.27...
[INFO] checking pedronauck-subject-derive-0.0.27 against try#a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d for pr-145342-1
[INFO] extracting crate pedronauck-subject-derive 0.0.27 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate pedronauck-subject-derive 0.0.27
[INFO] finished tweaking crates.io crate pedronauck-subject-derive 0.0.27
[INFO] tweaked toml for crates.io crate pedronauck-subject-derive 0.0.27 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate pedronauck-subject-derive 0.0.27 on toolchain a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate pedronauck-subject-derive 0.0.27 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 12822719797daa853926a6a2106e6dc67cf748deb59123b7649b3ff6e1a5913c
[INFO] running `Command { std: "docker" "start" "-a" "12822719797daa853926a6a2106e6dc67cf748deb59123b7649b3ff6e1a5913c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12822719797daa853926a6a2106e6dc67cf748deb59123b7649b3ff6e1a5913c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12822719797daa853926a6a2106e6dc67cf748deb59123b7649b3ff6e1a5913c", kill_on_drop: false }`
[INFO] [stdout] 12822719797daa853926a6a2106e6dc67cf748deb59123b7649b3ff6e1a5913c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+a4980311fb7bb9e7893708e6bd3fbbfb2819fd3d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27f07067d845268bd5193e01ec3f7fdf99bd3cc1ebaaf9e72f1a96e646f929e3
[INFO] running `Command { std: "docker" "start" "-a" "27f07067d845268bd5193e01ec3f7fdf99bd3cc1ebaaf9e72f1a96e646f929e3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]     Checking unicode-ident v1.0.18
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking quote v1.0.39
[INFO] [stderr]     Checking syn v2.0.100
[INFO] [stderr]     Checking pedronauck-subject-derive v0.0.27 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/fields.rs:173:34
[INFO] [stdout]     |
[INFO] [stdout] 173 | pub fn names_from_fields(fields: &Punctuated<Field, Comma>) -> Vec<FieldInfo> {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^         --------- the same lifetime is hidden here
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 173 | pub fn names_from_fields(fields: &Punctuated<Field, Comma>) -> Vec<FieldInfo<'_>> {
[INFO] [stdout]     |                                                                             ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/fields.rs:173:34
[INFO] [stdout]     |
[INFO] [stdout] 173 | pub fn names_from_fields(fields: &Punctuated<Field, Comma>) -> Vec<FieldInfo> {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^         --------- the same lifetime is hidden here
[INFO] [stdout]     |                                  |
[INFO] [stdout]     |                                  the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 173 | pub fn names_from_fields(fields: &Punctuated<Field, Comma>) -> Vec<FieldInfo<'_>> {
[INFO] [stdout]     |                                                                             ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.73s
[INFO] running `Command { std: "docker" "inspect" "27f07067d845268bd5193e01ec3f7fdf99bd3cc1ebaaf9e72f1a96e646f929e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27f07067d845268bd5193e01ec3f7fdf99bd3cc1ebaaf9e72f1a96e646f929e3", kill_on_drop: false }`
[INFO] [stdout] 27f07067d845268bd5193e01ec3f7fdf99bd3cc1ebaaf9e72f1a96e646f929e3