[INFO] fetching crate carapax-session 0.2.1...
[INFO] testing carapax-session-0.2.1 against 1.49.0 for beta-1.50-1
[INFO] extracting crate carapax-session 0.2.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate carapax-session 0.2.1 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", 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/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: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e7c5591271231a6ec874391c515965f769ee182ff058b24fd5b13df37d50669e
[INFO] running `Command { std: "docker" "start" "-a" "e7c5591271231a6ec874391c515965f769ee182ff058b24fd5b13df37d50669e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7c5591271231a6ec874391c515965f769ee182ff058b24fd5b13df37d50669e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7c5591271231a6ec874391c515965f769ee182ff058b24fd5b13df37d50669e", kill_on_drop: false }`
[INFO] [stdout] e7c5591271231a6ec874391c515965f769ee182ff058b24fd5b13df37d50669e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 8a3a98ddf2b6b899450cc6c1aa1e690fdec5aa94537dd0865c0e59aebac4c3ad
[INFO] running `Command { std: "docker" "start" "-a" "8a3a98ddf2b6b899450cc6c1aa1e690fdec5aa94537dd0865c0e59aebac4c3ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling futures-core v0.3.1
[INFO] [stderr]    Compiling bytes v0.5.4
[INFO] [stderr]    Compiling untrusted v0.7.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling futures-sink v0.3.1
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling pin-project-lite v0.1.4
[INFO] [stderr]    Compiling futures-task v0.3.1
[INFO] [stderr]    Compiling futures-io v0.3.1
[INFO] [stderr]    Compiling pin-utils v0.1.0-alpha.4
[INFO] [stderr]    Compiling smallvec v1.1.0
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling encoding_rs v0.8.22
[INFO] [stderr]    Compiling dtoa v0.4.4
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling doc-comment v0.3.1
[INFO] [stderr]    Compiling ring v0.16.9
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling indexmap v1.3.1
[INFO] [stderr]    Compiling futures-channel v0.3.1
[INFO] [stderr]    Compiling unicode-normalization v0.1.12
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling derefable v0.1.0
[INFO] [stderr]    Compiling http v0.2.0
[INFO] [stderr]    Compiling mime_guess v2.0.1
[INFO] [stderr]    Compiling idna v0.2.0
[INFO] [stderr]    Compiling base64 v0.10.1
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling backtrace v0.3.42
[INFO] [stderr]    Compiling regex v1.3.3
[INFO] [stderr]    Compiling url v2.1.1
[INFO] [stderr]    Compiling shellwords v1.0.0
[INFO] [stderr]    Compiling http-body v0.3.1
[INFO] [stderr]    Compiling webpki v0.21.0
[INFO] [stderr]    Compiling sct v0.6.0
[INFO] [stderr]    Compiling ct-logs v0.6.0
[INFO] [stderr]    Compiling rustls v0.16.0
[INFO] [stderr]    Compiling webpki-roots v0.17.0
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling rustls-native-certs v0.1.0
[INFO] [stderr]    Compiling tokio-macros v0.2.4
[INFO] [stderr]    Compiling proc-macro-hack v0.5.11
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling pin-project-internal v0.4.8
[INFO] [stderr]    Compiling async-trait v0.1.22
[INFO] [stderr]    Compiling async-stream-impl v0.2.1
[INFO] [stderr]    Compiling derive_more v0.99.2
[INFO] [stderr]    Compiling snafu-derive v0.6.2
[INFO] [stderr]    Compiling carapax-codegen v0.1.1
[INFO] [stderr]    Compiling failure v0.1.6
[INFO] [stderr]    Compiling tokio v0.2.11
[INFO] [stderr]    Compiling async-stream v0.2.1
[INFO] [stderr]    Compiling futures-macro v0.3.1
[INFO] [stderr]    Compiling pin-project v0.4.8
[INFO] [stderr]    Compiling snafu v0.6.2
[INFO] [stderr]    Compiling futures-util v0.3.1
[INFO] [stderr]    Compiling tokio-util v0.2.0
[INFO] [stderr]    Compiling tokio-rustls v0.12.2
[INFO] [stderr]    Compiling futures-executor v0.3.1
[INFO] [stderr]    Compiling h2 v0.2.1
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling futures v0.3.1
[INFO] [stderr]    Compiling tokio-socks v0.2.0
[INFO] [stderr]    Compiling hyper v0.13.1
[INFO] [stderr]    Compiling serde_json v1.0.45
[INFO] [stderr]    Compiling serde_urlencoded v0.6.1
[INFO] [stderr]    Compiling hyper-rustls v0.19.1
[INFO] [stderr]    Compiling reqwest v0.10.1
[INFO] [stderr]    Compiling seance v0.2.0
[INFO] [stderr]    Compiling tgbot v0.6.0
[INFO] [stderr]    Compiling carapax v0.4.0
[INFO] [stderr]    Compiling carapax-session v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3m 30s
[INFO] running `Command { std: "docker" "inspect" "8a3a98ddf2b6b899450cc6c1aa1e690fdec5aa94537dd0865c0e59aebac4c3ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a3a98ddf2b6b899450cc6c1aa1e690fdec5aa94537dd0865c0e59aebac4c3ad", kill_on_drop: false }`
[INFO] [stdout] 8a3a98ddf2b6b899450cc6c1aa1e690fdec5aa94537dd0865c0e59aebac4c3ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 46e264197d751420f1d4520c721fd4dac498f71c0abe28935ddd23e9d0c189ca
[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" "46e264197d751420f1d4520c721fd4dac498f71c0abe28935ddd23e9d0c189ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.1
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling carapax-session v0.2.1 (/opt/rustwide/workdir)
[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] 
[INFO] [stdout] error: aborting due to 2 previous errors
[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`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "46e264197d751420f1d4520c721fd4dac498f71c0abe28935ddd23e9d0c189ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46e264197d751420f1d4520c721fd4dac498f71c0abe28935ddd23e9d0c189ca", kill_on_drop: false }`
[INFO] [stdout] 46e264197d751420f1d4520c721fd4dac498f71c0abe28935ddd23e9d0c189ca