[INFO] fetching crate carapax-session 0.2.1...
[INFO] checking carapax-session-0.2.1 against try#31561a63598a0f21fc74c024747ef1310fdd2eb2 for pr-133536
[INFO] extracting crate carapax-session 0.2.1 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate carapax-session 0.2.1 on toolchain 31561a63598a0f21fc74c024747ef1310fdd2eb2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate carapax-session 0.2.1
[INFO] finished tweaking crates.io crate carapax-session 0.2.1
[INFO] tweaked toml for crates.io crate carapax-session 0.2.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate crates.io crate carapax-session 0.2.1 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" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 073f1e2e0170119d66b5d95430161e2c609bb88b13e9cb8515194baef6fc2183
[INFO] running `Command { std: "docker" "start" "-a" "073f1e2e0170119d66b5d95430161e2c609bb88b13e9cb8515194baef6fc2183", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "073f1e2e0170119d66b5d95430161e2c609bb88b13e9cb8515194baef6fc2183", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "073f1e2e0170119d66b5d95430161e2c609bb88b13e9cb8515194baef6fc2183", kill_on_drop: false }`
[INFO] [stdout] 073f1e2e0170119d66b5d95430161e2c609bb88b13e9cb8515194baef6fc2183
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 930cc263aa88296671dfc05590a5c56fc8a0e357fb257ccbfc50868efd87c337
[INFO] running `Command { std: "docker" "start" "-a" "930cc263aa88296671dfc05590a5c56fc8a0e357fb257ccbfc50868efd87c337", kill_on_drop: false }`
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[INFO] [stdout] error: Enable fs-backend feature
[INFO] [stdout]  --> examples/session_counter.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | compile_error!("Enable fs-backend feature");
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `carapax_session::backend::fs`
[INFO] [stdout]  --> examples/session_counter.rs:7:32
[INFO] [stdout]   |
[INFO] [stdout] 7 | use carapax_session::{backend::fs::FilesystemBackend, SessionCollector, SessionManager};
[INFO] [stdout]   |                                ^^ could not find `fs` in `backend`
[INFO] [stdout]   |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/seance-0.2.0/src/backend/mod.rs:8:9
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub mod fs;
[INFO] [stdout]   |         ^^
[INFO] [stdout] note: the item is gated behind the `fs-backend` feature
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/seance-0.2.0/src/backend/mod.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | #[cfg(feature = "fs-backend")]
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `carapax-session` (example "session_counter") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "930cc263aa88296671dfc05590a5c56fc8a0e357fb257ccbfc50868efd87c337", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "930cc263aa88296671dfc05590a5c56fc8a0e357fb257ccbfc50868efd87c337", kill_on_drop: false }`
[INFO] [stdout] 930cc263aa88296671dfc05590a5c56fc8a0e357fb257ccbfc50868efd87c337
