[INFO] fetching crate spidermeme 0.1.0...
[INFO] testing spidermeme-0.1.0 against try#c2e32f1c9652b13ed99608599c1e855462f421f3 for pr-146098-8
[INFO] extracting crate spidermeme 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] removed /workspace/builds/worker-2-tc2/source/rust-toolchain
[INFO] started tweaking crates.io crate spidermeme 0.1.0
[INFO] finished tweaking crates.io crate spidermeme 0.1.0
[INFO] tweaked toml for crates.io crate spidermeme 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate spidermeme 0.1.0 on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b06053f633168bcd7d2f6135b054d244e62d9a0fca6f0a0656dad1ce145f4135
[INFO] running `Command { std: "docker" "start" "-a" "b06053f633168bcd7d2f6135b054d244e62d9a0fca6f0a0656dad1ce145f4135", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b06053f633168bcd7d2f6135b054d244e62d9a0fca6f0a0656dad1ce145f4135", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b06053f633168bcd7d2f6135b054d244e62d9a0fca6f0a0656dad1ce145f4135", kill_on_drop: false }`
[INFO] [stdout] b06053f633168bcd7d2f6135b054d244e62d9a0fca6f0a0656dad1ce145f4135
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca26d996be16597bf44318996bc284da9e483f36c2c3c53e7c88f6f5c16a8aec
[INFO] running `Command { std: "docker" "start" "-a" "ca26d996be16597bf44318996bc284da9e483f36c2c3c53e7c88f6f5c16a8aec", kill_on_drop: false }`
[INFO] [stderr]    Compiling spidermeme v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `extended_key_value_attributes` has been stable since 1.54.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(extended_key_value_attributes)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0366]: `!DifferentTypes` impls cannot be specialized
[INFO] [stdout]   --> src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 |     impl<T> !DifferentTypes for TypePair<T, T> {}
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `T` is mentioned multiple times
[INFO] [stdout] note: use the same sequence of generic lifetime, type and const parameters as the struct definition
[INFO] [stdout]   --> src/lib.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub struct TypePair<A, B>(A, B);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0366`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `spidermeme` (lib) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "ca26d996be16597bf44318996bc284da9e483f36c2c3c53e7c88f6f5c16a8aec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca26d996be16597bf44318996bc284da9e483f36c2c3c53e7c88f6f5c16a8aec", kill_on_drop: false }`
[INFO] [stdout] ca26d996be16597bf44318996bc284da9e483f36c2c3c53e7c88f6f5c16a8aec