[INFO] fetching crate lain_derive 0.5.5...
[INFO] testing lain_derive-0.5.5 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate lain_derive 0.5.5 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate lain_derive 0.5.5
[INFO] finished tweaking crates.io crate lain_derive 0.5.5
[INFO] tweaked toml for crates.io crate lain_derive 0.5.5 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate lain_derive 0.5.5 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 6 packages to latest compatible versions
[INFO] [stderr]       Adding proc-macro2 v0.4.30 (available: v1.0.103)
[INFO] [stderr]       Adding quote v0.6.13 (available: v1.0.42)
[INFO] [stderr]       Adding syn v0.15.44 (available: v2.0.110)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d8096ce42a3d254974f2c65fe8e3182cfa9f32036c78359305a5bc1763c84eca
[INFO] running `Command { std: "docker" "start" "-a" "d8096ce42a3d254974f2c65fe8e3182cfa9f32036c78359305a5bc1763c84eca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d8096ce42a3d254974f2c65fe8e3182cfa9f32036c78359305a5bc1763c84eca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8096ce42a3d254974f2c65fe8e3182cfa9f32036c78359305a5bc1763c84eca", kill_on_drop: false }`
[INFO] [stdout] d8096ce42a3d254974f2c65fe8e3182cfa9f32036c78359305a5bc1763c84eca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 02ea9e2f141a1b606f856c75a4169b7a57a62d5e4d7f27db651c61f8a4b83ec3
[INFO] running `Command { std: "docker" "start" "-a" "02ea9e2f141a1b606f856c75a4169b7a57a62d5e4d7f27db651c61f8a4b83ec3", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling lain_derive v0.5.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `generics` and `original` are never read
[INFO] [stdout]   --> src/internals/ast.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub struct Container<'a> {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub generics: &'a syn::Generics,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 17 |     /// Original input.
[INFO] [stdout] 18 |     pub original: &'a syn::DeriveInput,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/internals/attr.rs:127:22
[INFO] [stdout]     |
[INFO] [stdout] 127 |     pub fn lain_path(&self) -> Cow<syn::Path> {
[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] 127 |     pub fn lain_path(&self) -> Cow<'_, syn::Path> {
[INFO] [stdout]     |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.19s
[INFO] running `Command { std: "docker" "inspect" "02ea9e2f141a1b606f856c75a4169b7a57a62d5e4d7f27db651c61f8a4b83ec3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02ea9e2f141a1b606f856c75a4169b7a57a62d5e4d7f27db651c61f8a4b83ec3", kill_on_drop: false }`
[INFO] [stdout] 02ea9e2f141a1b606f856c75a4169b7a57a62d5e4d7f27db651c61f8a4b83ec3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e7abc6ae09d52283426793cffb84887327d2a2dd32d60bf1a033047b137f9b5
[INFO] running `Command { std: "docker" "start" "-a" "1e7abc6ae09d52283426793cffb84887327d2a2dd32d60bf1a033047b137f9b5", kill_on_drop: false }`
[INFO] [stderr]    Compiling lain_derive v0.5.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `generics` and `original` are never read
[INFO] [stdout]   --> src/internals/ast.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub struct Container<'a> {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub generics: &'a syn::Generics,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 17 |     /// Original input.
[INFO] [stdout] 18 |     pub original: &'a syn::DeriveInput,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/internals/attr.rs:127:22
[INFO] [stdout]     |
[INFO] [stdout] 127 |     pub fn lain_path(&self) -> Cow<syn::Path> {
[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] 127 |     pub fn lain_path(&self) -> Cow<'_, syn::Path> {
[INFO] [stdout]     |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `generics` and `original` are never read
[INFO] [stdout]   --> src/internals/ast.rs:16:9
[INFO] [stdout]    |
[INFO] [stdout]  8 | pub struct Container<'a> {
[INFO] [stdout]    |            --------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub generics: &'a syn::Generics,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 17 |     /// Original input.
[INFO] [stdout] 18 |     pub original: &'a syn::DeriveInput,
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/internals/attr.rs:127:22
[INFO] [stdout]     |
[INFO] [stdout] 127 |     pub fn lain_path(&self) -> Cow<syn::Path> {
[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] 127 |     pub fn lain_path(&self) -> Cow<'_, syn::Path> {
[INFO] [stdout]     |                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.43s
[INFO] running `Command { std: "docker" "inspect" "1e7abc6ae09d52283426793cffb84887327d2a2dd32d60bf1a033047b137f9b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e7abc6ae09d52283426793cffb84887327d2a2dd32d60bf1a033047b137f9b5", kill_on_drop: false }`
[INFO] [stdout] 1e7abc6ae09d52283426793cffb84887327d2a2dd32d60bf1a033047b137f9b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] da472ffc6d08d9230d4ec470697d48f8a50615f9f6d96600347aa4c36d617ee7
[INFO] running `Command { std: "docker" "start" "-a" "da472ffc6d08d9230d4ec470697d48f8a50615f9f6d96600347aa4c36d617ee7", kill_on_drop: false }`
[INFO] [stderr] warning: fields `generics` and `original` are never read
[INFO] [stderr]   --> src/internals/ast.rs:16:9
[INFO] [stderr]    |
[INFO] [stderr]  8 | pub struct Container<'a> {
[INFO] [stderr]    |            --------- fields in this struct
[INFO] [stderr] ...
[INFO] [stderr] 16 |     pub generics: &'a syn::Generics,
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr] 17 |     /// Original input.
[INFO] [stderr] 18 |     pub original: &'a syn::DeriveInput,
[INFO] [stderr]    |         ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/internals/attr.rs:127:22
[INFO] [stderr]     |
[INFO] [stderr] 127 |     pub fn lain_path(&self) -> Cow<syn::Path> {
[INFO] [stderr]     |                      ^^^^^     ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]     |                      |
[INFO] [stderr]     |                      the lifetime is elided here
[INFO] [stderr]     |
[INFO] [stderr]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]     |
[INFO] [stderr] 127 |     pub fn lain_path(&self) -> Cow<'_, syn::Path> {
[INFO] [stderr]     |                                    +++
[INFO] [stderr] 
[INFO] [stderr] warning: `lain_derive` (lib) generated 2 warnings (run `cargo fix --lib -p lain_derive` to apply 1 suggestion)
[INFO] [stderr] warning: `lain_derive` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/lain_derive-6fc5f930f6210015)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests lain_derive
[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 4 tests
[INFO] [stdout] test src/lib.rs - new_fuzzed (line 36) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - mutatable_helper (line 120) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - binary_serialize (line 61) - compile fail ... ok
[INFO] [stdout] test src/lib.rs - variable_size_object (line 159) - compile fail ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.20s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "da472ffc6d08d9230d4ec470697d48f8a50615f9f6d96600347aa4c36d617ee7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da472ffc6d08d9230d4ec470697d48f8a50615f9f6d96600347aa4c36d617ee7", kill_on_drop: false }`
[INFO] [stdout] da472ffc6d08d9230d4ec470697d48f8a50615f9f6d96600347aa4c36d617ee7
