[INFO] fetching crate mongo_sync 0.1.0... [INFO] testing mongo_sync-0.1.0 against beta-2025-10-28 for beta-1.92-2 [INFO] extracting crate mongo_sync 0.1.0 into /workspace/builds/worker-4-tc2/source [INFO] started tweaking crates.io crate mongo_sync 0.1.0 [INFO] finished tweaking crates.io crate mongo_sync 0.1.0 [INFO] tweaked toml for crates.io crate mongo_sync 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate mongo_sync 0.1.0 on toolchain beta-2025-10-28 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate crates.io crate mongo_sync 0.1.0 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" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 9e21c96ad4ad1f23b43406a4b0dcd5718cf4e9d211521296a1481a02e90dfa51 [INFO] running `Command { std: "docker" "start" "-a" "9e21c96ad4ad1f23b43406a4b0dcd5718cf4e9d211521296a1481a02e90dfa51", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "9e21c96ad4ad1f23b43406a4b0dcd5718cf4e9d211521296a1481a02e90dfa51", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9e21c96ad4ad1f23b43406a4b0dcd5718cf4e9d211521296a1481a02e90dfa51", kill_on_drop: false }` [INFO] [stdout] 9e21c96ad4ad1f23b43406a4b0dcd5718cf4e9d211521296a1481a02e90dfa51 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 5337e387f039c989623b527608aa3b53d73210f78cb13c275a4e2f1455b24a1b [INFO] running `Command { std: "docker" "start" "-a" "5337e387f039c989623b527608aa3b53d73210f78cb13c275a4e2f1455b24a1b", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.29 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling syn v1.0.80 [INFO] [stderr] Compiling version_check v0.9.3 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling libc v0.2.103 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling lazy_static v1.4.0 [INFO] [stderr] Compiling log v0.4.14 [INFO] [stderr] Compiling once_cell v1.8.0 [INFO] [stderr] Compiling pin-project-lite v0.2.7 [INFO] [stderr] Compiling futures-core v0.3.17 [INFO] [stderr] Compiling memchr v2.4.1 [INFO] [stderr] Compiling futures-io v0.3.17 [INFO] [stderr] Compiling crossbeam-utils v0.8.5 [INFO] [stderr] Compiling typenum v1.14.0 [INFO] [stderr] Compiling serde_derive v1.0.130 [INFO] [stderr] Compiling serde v1.0.130 [INFO] [stderr] Compiling scopeguard v1.1.0 [INFO] [stderr] Compiling slab v0.4.4 [INFO] [stderr] Compiling cache-padded v1.1.1 [INFO] [stderr] Compiling tinyvec_macros v0.1.0 [INFO] [stderr] Compiling proc-macro-hack v0.5.19 [INFO] [stderr] Compiling cc v1.0.71 [INFO] [stderr] Compiling tinyvec v1.5.0 [INFO] [stderr] Compiling concurrent-queue v1.2.2 [INFO] [stderr] 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pin-utils v0.1.0 [INFO] [stderr] Compiling spin v0.5.2 [INFO] [stderr] Compiling strsim v0.10.0 [INFO] [stderr] Compiling ppv-lite86 v0.2.10 [INFO] [stderr] Compiling matches v0.1.9 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Compiling unicode-bidi v0.3.7 [INFO] [stderr] Compiling bytes v1.1.0 [INFO] [stderr] Compiling num_cpus v1.13.0 [INFO] [stderr] Compiling getrandom v0.2.3 [INFO] [stderr] Compiling rand_core v0.6.3 [INFO] [stderr] Compiling crossbeam-epoch v0.9.5 [INFO] [stderr] Compiling async-trait v0.1.51 [INFO] [stderr] Compiling ident_case v1.0.1 [INFO] [stderr] Compiling ring v0.16.20 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling parking_lot_core v0.8.5 [INFO] [stderr] Compiling percent-encoding v2.1.0 [INFO] [stderr] Compiling fnv v1.0.7 [INFO] [stderr] Compiling async-task v4.0.3 [INFO] [stderr] Compiling serde_json v1.0.68 [INFO] [stderr] Compiling futures-channel v0.3.17 [INFO] [stderr] Compiling form_urlencoded v1.0.1 [INFO] [stderr] 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linked-hash-map v0.5.4 [INFO] [stderr] Compiling base64 v0.13.0 [INFO] [stderr] Compiling ipnet v2.3.1 [INFO] [stderr] Compiling data-encoding v2.3.2 [INFO] [stderr] Compiling chrono v0.4.19 [INFO] [stderr] Compiling subtle v2.4.1 [INFO] [stderr] Compiling opaque-debug v0.3.0 [INFO] [stderr] Compiling rayon-core v1.9.1 [INFO] [stderr] Compiling rustversion v1.0.5 [INFO] [stderr] Compiling quick-error v1.2.3 [INFO] [stderr] Compiling resolv-conf v0.7.0 [INFO] [stderr] Compiling crossbeam-deque v0.8.1 [INFO] [stderr] Compiling crypto-mac v0.11.1 [INFO] [stderr] Compiling lru-cache v0.1.2 [INFO] [stderr] Compiling parking_lot v0.11.2 [INFO] [stderr] Compiling async-lock v2.4.0 [INFO] [stderr] Compiling cpufeatures v0.2.1 [INFO] [stderr] Compiling crossbeam-queue v0.3.2 [INFO] [stderr] Compiling uuid v0.8.2 [INFO] [stderr] Compiling rayon v1.5.1 [INFO] [stderr] Compiling thread_local v1.1.3 [INFO] [stderr] Compiling sharded-slab v0.1.3 [INFO] [stderr] Compiling unicode-width v0.1.9 [INFO] 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[stderr] Compiling webpki v0.21.4 [INFO] [stderr] Compiling sct v0.6.1 [INFO] [stderr] Compiling webpki-roots v0.21.1 [INFO] [stderr] Compiling ctor v0.1.21 [INFO] [stderr] Compiling tokio-macros v1.4.1 [INFO] [stderr] Compiling thiserror-impl v1.0.29 [INFO] [stderr] Compiling enum-as-inner v0.3.3 [INFO] [stderr] Compiling async-attributes v1.1.2 [INFO] [stderr] Compiling tracing-attributes v0.1.18 [INFO] [stderr] Compiling typed-builder v0.9.1 [INFO] [stderr] Compiling derivative v2.2.0 [INFO] [stderr] Compiling clap_derive v3.0.0-beta.4 [INFO] [stderr] Compiling darling_macro v0.13.0 [INFO] [stderr] Compiling thiserror v1.0.29 [INFO] [stderr] Compiling tracing v0.1.29 [INFO] [stderr] Compiling darling v0.13.0 [INFO] [stderr] Compiling mio v0.7.13 [INFO] [stderr] Compiling polling v2.1.0 [INFO] [stderr] Compiling kv-log-macro v1.0.7 [INFO] [stderr] Compiling rustls v0.19.1 [INFO] [stderr] Compiling tracing-log v0.1.2 [INFO] [stderr] Compiling os_info v3.0.7 [INFO] [stderr] Compiling serde_with_macros v1.5.0 [INFO] [stderr] Compiling async-io v1.6.0 [INFO] [stderr] Compiling clap v3.0.0-beta.4 [INFO] [stderr] Compiling async-global-executor v2.0.2 [INFO] [stderr] Compiling async-std v1.10.0 [INFO] [stderr] Compiling futures-executor v0.3.17 [INFO] [stderr] Compiling trust-dns-proto v0.20.3 [INFO] [stderr] Compiling tokio-util v0.6.8 [INFO] [stderr] Compiling tokio-rustls v0.22.0 [INFO] [stderr] Compiling serde_bytes v0.11.5 [INFO] [stderr] Compiling tracing-serde v0.1.2 [INFO] [stderr] Compiling serde_with v1.10.0 [INFO] [stderr] Compiling toml v0.5.8 [INFO] [stderr] Compiling bson v2.0.0 [INFO] [stderr] Compiling tracing-subscriber v0.2.25 [INFO] [stderr] Compiling trust-dns-resolver v0.20.3 [INFO] [stderr] Compiling async-std-resolver v0.20.3 [INFO] [stderr] Compiling mongodb v2.0.0 [INFO] [stderr] Compiling tracing-appender v0.1.2 [INFO] [stderr] Compiling mongo_sync v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0407]: method `backtrace` is not a member of trait `std::error::Error` [INFO] [stdout] --> src/error.rs:11:10 [INFO] [stdout] | [INFO] [stdout] 11 | #[derive(Error, Debug)] [INFO] [stdout] | ^^^^^ not a member of trait `std::error::Error` [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the derive macro `Error` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> src/lib.rs:32:1 [INFO] [stdout] | [INFO] [stdout] 32 | #![feature(backtrace)] [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the feature `backtrace` has been stable since 1.65.0 and no longer requires an attribute to enable [INFO] [stdout] --> src/lib.rs:32:12 [INFO] [stdout] | [INFO] [stdout] 32 | #![feature(backtrace)] [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(stable_features)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `backtrace` found for reference `&dyn std::error::Error` in the current scope [INFO] [stdout] --> src/error.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | source: MongoError, [INFO] [stdout] | ^^^^^^ method not found in `&dyn std::error::Error` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `backtrace` found for reference `&dyn std::error::Error` in the current scope [INFO] [stdout] --> src/error.rs:28:9 [INFO] [stdout] | [INFO] [stdout] 28 | source: ValueAccessError, [INFO] [stdout] | ^^^^^^ method not found in `&dyn std::error::Error` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0599]: no method named `backtrace` found for reference `&dyn std::error::Error` in the current scope [INFO] [stdout] --> src/error.rs:36:9 [INFO] [stdout] | [INFO] [stdout] 36 | source: RecvError, [INFO] [stdout] | ^^^^^^ method not found in `&dyn std::error::Error` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `source` is never read [INFO] [stdout] --> src/error.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | source: MongoError, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `backtrace` is never read [INFO] [stdout] --> src/error.rs:17:9 [INFO] [stdout] | [INFO] [stdout] 17 | backtrace: Backtrace, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `source` is never read [INFO] [stdout] --> src/error.rs:28:9 [INFO] [stdout] | [INFO] [stdout] 28 | source: ValueAccessError, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `backtrace` is never read [INFO] [stdout] --> src/error.rs:29:9 [INFO] [stdout] | [INFO] [stdout] 29 | backtrace: Backtrace, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `source` is never read [INFO] [stdout] --> src/error.rs:36:9 [INFO] [stdout] | [INFO] [stdout] 36 | source: RecvError, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `backtrace` is never read [INFO] [stdout] --> src/error.rs:37:9 [INFO] [stdout] | [INFO] [stdout] 37 | backtrace: Backtrace, [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0407, E0554, E0599. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0407`. [INFO] [stdout] [INFO] [stderr] error: could not compile `mongo_sync` (lib) due to 5 previous errors; 7 warnings emitted [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "5337e387f039c989623b527608aa3b53d73210f78cb13c275a4e2f1455b24a1b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "5337e387f039c989623b527608aa3b53d73210f78cb13c275a4e2f1455b24a1b", kill_on_drop: false }` [INFO] [stdout] 5337e387f039c989623b527608aa3b53d73210f78cb13c275a4e2f1455b24a1b