[INFO] fetching crate hotdrink-rs 0.1.3...
[INFO] testing hotdrink-rs-0.1.3 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate hotdrink-rs 0.1.3 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate hotdrink-rs 0.1.3
[INFO] finished tweaking crates.io crate hotdrink-rs 0.1.3
[INFO] tweaked toml for crates.io crate hotdrink-rs 0.1.3 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate hotdrink-rs 0.1.3 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate hotdrink-rs 0.1.3 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" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dc73d987b2604b129997aff548726f2cd511d49ac920699211c6ba7b24a746bd
[INFO] running `Command { std: "docker" "start" "-a" "dc73d987b2604b129997aff548726f2cd511d49ac920699211c6ba7b24a746bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dc73d987b2604b129997aff548726f2cd511d49ac920699211c6ba7b24a746bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc73d987b2604b129997aff548726f2cd511d49ac920699211c6ba7b24a746bd", kill_on_drop: false }`
[INFO] [stdout] dc73d987b2604b129997aff548726f2cd511d49ac920699211c6ba7b24a746bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 280264d4c9f720898d7465db9073ebc14506b3afd632957461b7285f6419578c
[INFO] running `Command { std: "docker" "start" "-a" "280264d4c9f720898d7465db9073ebc14506b3afd632957461b7285f6419578c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling futures-sink v0.3.14
[INFO] [stderr]    Compiling futures-core v0.3.14
[INFO] [stderr]    Compiling slab v0.4.3
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling futures-io v0.3.14
[INFO] [stderr]    Compiling pin-project-lite v0.2.6
[INFO] [stderr]    Compiling futures-task v0.3.14
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling itertools v0.10.0
[INFO] [stderr]    Compiling futures-channel v0.3.14
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling futures-macro v0.3.14
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling futures-util v0.3.14
[INFO] [stderr]    Compiling futures-executor v0.3.14
[INFO] [stderr]    Compiling futures v0.3.14
[INFO] [stderr]    Compiling hotdrink-rs v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]    --> src/lib.rs:109:12
[INFO] [stdout]     |
[INFO] [stdout] 109 | #![feature(concat_idents)]
[INFO] [stdout]     |            ^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]     |
[INFO] [stdout]     = note: removed in 1.90.0; see <https://github.com/rust-lang/rust/pull/142704> for more information
[INFO] [stdout]     = note: use the `${concat(..)}` metavariable expression instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `linked_list_ranker::LinkedListRanker`
[INFO] [stdout]  --> src/variable_ranking/mod.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub use linked_list_ranker::LinkedListRanker;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `result_flattening` has been stable since 1.89.0 and no longer requires an attribute to enable
[INFO] [stdout]    --> src/lib.rs:106:12
[INFO] [stdout]     |
[INFO] [stdout] 106 | #![feature(result_flattening)]
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `drain_filter`
[INFO] [stdout]    --> src/lib.rs:108:12
[INFO] [stdout]     |
[INFO] [stdout] 108 | #![feature(drain_filter)]
[INFO] [stdout]     |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `drain_filter` found for struct `Vec<Constraint<T>>` in the current scope
[INFO] [stdout]    --> src/model/component.rs:299:26
[INFO] [stdout]     |
[INFO] [stdout] 299 |         self.constraints.drain_filter(|c| {
[INFO] [stdout]     |         -----------------^^^^^^^^^^^^ method not found in `Vec<Constraint<T>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `drain_filter` found for struct `Vec<Method<T>>` in the current scope
[INFO] [stdout]   --> src/model/constraint.rs:55:44
[INFO] [stdout]    |
[INFO] [stdout] 55 |         let removed: Vec<_> = self.methods.drain_filter(|m| m.name() == name).collect();
[INFO] [stdout]    |                                            ^^^^^^^^^^^^ method not found in `Vec<Method<T>>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0557, E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hotdrink-rs` (lib) due to 4 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "280264d4c9f720898d7465db9073ebc14506b3afd632957461b7285f6419578c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "280264d4c9f720898d7465db9073ebc14506b3afd632957461b7285f6419578c", kill_on_drop: false }`
[INFO] [stdout] 280264d4c9f720898d7465db9073ebc14506b3afd632957461b7285f6419578c