[INFO] fetching crate sweep-bptree 0.4.1... [INFO] building sweep-bptree-0.4.1 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523 [INFO] extracting crate sweep-bptree 0.4.1 into /workspace/builds/worker-4-tc1/source [INFO] validating manifest of crates.io crate sweep-bptree 0.4.1 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate sweep-bptree 0.4.1 [INFO] finished tweaking crates.io crate sweep-bptree 0.4.1 [INFO] tweaked toml for crates.io crate sweep-bptree 0.4.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate crates.io crate sweep-bptree 0.4.1 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded regex v1.7.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 7b59c31cf1ee2dda3aafb0bcc8c4afa9f48b0fafe1148e413f3b58e3530edcaf [INFO] running `Command { std: "docker" "start" "-a" "7b59c31cf1ee2dda3aafb0bcc8c4afa9f48b0fafe1148e413f3b58e3530edcaf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7b59c31cf1ee2dda3aafb0bcc8c4afa9f48b0fafe1148e413f3b58e3530edcaf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7b59c31cf1ee2dda3aafb0bcc8c4afa9f48b0fafe1148e413f3b58e3530edcaf", kill_on_drop: false }` [INFO] [stdout] 7b59c31cf1ee2dda3aafb0bcc8c4afa9f48b0fafe1148e413f3b58e3530edcaf [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] f5152ef37560f3a64cb021bad57c28ddaff99372550fd251685bfb79668d729e [INFO] running `Command { std: "docker" "start" "-a" "f5152ef37560f3a64cb021bad57c28ddaff99372550fd251685bfb79668d729e", kill_on_drop: false }` [INFO] [stderr] Compiling sweep-bptree v0.4.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: elided lifetime has a name [INFO] [stdout] --> src/tree/mod.rs:493:70 [INFO] [stdout] | [INFO] [stdout] 493 | fn key_to_ref<'a, Q: ?Sized>(&'a self, k: &Q) -> Option> [INFO] [stdout] | -- lifetime `'a` declared here ^ this elided lifetime gets resolved as `'a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(elided_named_lifetimes)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.46s [INFO] running `Command { std: "docker" "inspect" "f5152ef37560f3a64cb021bad57c28ddaff99372550fd251685bfb79668d729e", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f5152ef37560f3a64cb021bad57c28ddaff99372550fd251685bfb79668d729e", kill_on_drop: false }` [INFO] [stdout] f5152ef37560f3a64cb021bad57c28ddaff99372550fd251685bfb79668d729e [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 61f3ea5ce49cce7ba15a1fb12614d499a145efe0ba61a65afaf1daf7c2427e0b [INFO] running `Command { std: "docker" "start" "-a" "61f3ea5ce49cce7ba15a1fb12614d499a145efe0ba61a65afaf1daf7c2427e0b", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.140 [INFO] [stderr] Compiling proc-macro2 v1.0.53 [INFO] [stderr] Compiling crossbeam-utils v0.8.15 [INFO] [stderr] Compiling memoffset v0.8.0 [INFO] [stderr] Compiling serde_derive v1.0.158 [INFO] [stderr] Compiling crossbeam-epoch v0.9.14 [INFO] [stderr] Compiling serde v1.0.158 [INFO] [stderr] Compiling indexmap v1.9.2 [INFO] [stderr] Compiling num-traits v0.2.15 [INFO] [stderr] Compiling serde_json v1.0.94 [INFO] [stderr] Compiling rayon-core v1.11.0 [INFO] [stderr] Compiling either v1.8.1 [INFO] [stderr] Compiling ciborium-io v0.2.0 [INFO] [stderr] Compiling os_str_bytes v6.5.0 [INFO] [stdout] error[E0635]: unknown feature `proc_macro_span_shrink` [INFO] [stdout] --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.53/src/lib.rs:92:30 [INFO] [stdout] | [INFO] [stdout] 92 | feature(proc_macro_span, proc_macro_span_shrink) [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling half v1.8.2 [INFO] [stderr] Compiling plotters-backend v0.3.4 [INFO] [stderr] Compiling ryu v1.0.13 [INFO] [stdout] For more information about this error, try `rustc --explain E0635`. [INFO] [stdout] [INFO] [stderr] error: could not compile `proc-macro2` (lib) due to 1 previous error [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] running `Command { std: "docker" "inspect" "61f3ea5ce49cce7ba15a1fb12614d499a145efe0ba61a65afaf1daf7c2427e0b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "61f3ea5ce49cce7ba15a1fb12614d499a145efe0ba61a65afaf1daf7c2427e0b", kill_on_drop: false }` [INFO] [stdout] 61f3ea5ce49cce7ba15a1fb12614d499a145efe0ba61a65afaf1daf7c2427e0b