[INFO] fetching crate carapax-session 0.2.1...
[INFO] testing carapax-session-0.2.1 against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] extracting crate carapax-session 0.2.1 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate carapax-session 0.2.1 on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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-3/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" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "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] 7cdc2d91aacbe35f1357a588982874f68eb31980d0247e77300632af402a3b94
[INFO] running `Command { std: "docker" "start" "-a" "7cdc2d91aacbe35f1357a588982874f68eb31980d0247e77300632af402a3b94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7cdc2d91aacbe35f1357a588982874f68eb31980d0247e77300632af402a3b94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7cdc2d91aacbe35f1357a588982874f68eb31980d0247e77300632af402a3b94", kill_on_drop: false }`
[INFO] [stdout] 7cdc2d91aacbe35f1357a588982874f68eb31980d0247e77300632af402a3b94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d13ae3dae46d7c0d6f338d372f95251e94cdd3d314917f23c1118b7d4478611
[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" "7d13ae3dae46d7c0d6f338d372f95251e94cdd3d314917f23c1118b7d4478611", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]    Compiling futures-core v0.3.1
[INFO] [stderr]    Compiling bytes v0.5.4
[INFO] [stderr]    Compiling spin v0.5.2
[INFO] [stderr]    Compiling futures-sink v0.3.1
[INFO] [stderr]    Compiling untrusted v0.7.0
[INFO] [stderr]    Compiling proc-macro-nested v0.1.3
[INFO] [stderr]    Compiling pin-project-lite v0.1.4
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling futures-io v0.3.1
[INFO] [stderr]    Compiling pin-utils v0.1.0-alpha.4
[INFO] [stderr]    Compiling futures-task v0.3.1
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling smallvec v1.1.0
[INFO] [stderr]    Compiling tower-service v0.3.0
[INFO] [stderr]    Compiling encoding_rs v0.8.22
[INFO] [stderr]    Compiling doc-comment v0.3.1
[INFO] [stderr]    Compiling regex-syntax v0.6.13
[INFO] [stderr]    Compiling base64 v0.11.0
[INFO] [stderr]    Compiling thread_local v1.0.1
[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 log v0.4.8
[INFO] [stderr]    Compiling http v0.2.0
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling ring v0.16.9
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling iovec v0.1.4
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling bytes v0.4.12
[INFO] [stderr]    Compiling mime_guess v2.0.1
[INFO] [stderr]    Compiling idna v0.2.0
[INFO] [stderr]    Compiling mio v0.6.21
[INFO] [stderr]    Compiling url v2.1.1
[INFO] [stderr]    Compiling backtrace v0.3.42
[INFO] [stderr]    Compiling http-body v0.3.1
[INFO] [stderr]    Compiling regex v1.3.3
[INFO] [stderr]    Compiling derefable v0.1.0
[INFO] [stderr]    Compiling shellwords v1.0.0
[INFO] [stderr]    Compiling sct v0.6.0
[INFO] [stderr]    Compiling webpki v0.21.0
[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 failure_derive v0.1.6
[INFO] [stderr]    Compiling async-stream-impl v0.2.1
[INFO] [stderr]    Compiling async-trait v0.1.22
[INFO] [stderr]    Compiling snafu-derive v0.6.2
[INFO] [stderr]    Compiling derive_more v0.99.2
[INFO] [stderr]    Compiling carapax-codegen v0.1.1
[INFO] [stderr]    Compiling tokio v0.2.11
[INFO] [stderr]    Compiling failure v0.1.6
[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 futures v0.3.1
[INFO] [stderr]    Compiling tokio-socks v0.2.0
[INFO] [stderr]    Compiling hyper v0.13.1
[INFO] [stderr]    Compiling hyper-rustls v0.19.1
[INFO] [stderr]    Compiling serde_json v1.0.45
[INFO] [stderr]    Compiling serde_urlencoded v0.6.1
[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 24s
[INFO] running `Command { std: "docker" "inspect" "7d13ae3dae46d7c0d6f338d372f95251e94cdd3d314917f23c1118b7d4478611", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d13ae3dae46d7c0d6f338d372f95251e94cdd3d314917f23c1118b7d4478611", kill_on_drop: false }`
[INFO] [stdout] 7d13ae3dae46d7c0d6f338d372f95251e94cdd3d314917f23c1118b7d4478611
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 998a2488ba946ed2637c7a5d54abb0ce1f0826ff684621e0b35d725c612aad6b
[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" "998a2488ba946ed2637c7a5d54abb0ce1f0826ff684621e0b35d725c612aad6b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling remove_dir_all v0.5.2
[INFO] [stderr]    Compiling dotenv v0.15.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling c2-chacha v0.2.3
[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` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "998a2488ba946ed2637c7a5d54abb0ce1f0826ff684621e0b35d725c612aad6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "998a2488ba946ed2637c7a5d54abb0ce1f0826ff684621e0b35d725c612aad6b", kill_on_drop: false }`
[INFO] [stdout] 998a2488ba946ed2637c7a5d54abb0ce1f0826ff684621e0b35d725c612aad6b