[INFO] fetching crate filedupes 0.1.1...
[INFO] testing filedupes-0.1.1 against 1.90.0 for beta-1.91-3
[INFO] extracting crate filedupes 0.1.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate filedupes 0.1.1
[INFO] finished tweaking crates.io crate filedupes 0.1.1
[INFO] tweaked toml for crates.io crate filedupes 0.1.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate filedupes 0.1.1 on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 32 packages to latest compatible versions
[INFO] [stderr]       Adding clap v2.34.0 (available: v4.5.48)
[INFO] [stderr]       Adding sha1 v0.6.1 (available: v0.10.6)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded file v1.1.2
[INFO] [stderr]   Downloaded pretty-bytes v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 495af83592156a439d15b73f5a9c3b1b86d2112d4f3f896a12df8b7b8e82bcd0
[INFO] running `Command { std: "docker" "start" "-a" "495af83592156a439d15b73f5a9c3b1b86d2112d4f3f896a12df8b7b8e82bcd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "495af83592156a439d15b73f5a9c3b1b86d2112d4f3f896a12df8b7b8e82bcd0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "495af83592156a439d15b73f5a9c3b1b86d2112d4f3f896a12df8b7b8e82bcd0", kill_on_drop: false }`
[INFO] [stdout] 495af83592156a439d15b73f5a9c3b1b86d2112d4f3f896a12df8b7b8e82bcd0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f646582ac0a6af7d4ee3e8605074805756d363b808449c5d4f0e3b7f6cce29fb
[INFO] running `Command { std: "docker" "start" "-a" "f646582ac0a6af7d4ee3e8605074805756d363b808449c5d4f0e3b7f6cce29fb", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-width v0.2.1
[INFO] [stderr]    Compiling sha1_smol v1.0.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling sha1 v0.6.1
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling getopts v0.2.24
[INFO] [stderr]    Compiling pretty-bytes v0.2.2
[INFO] [stderr]    Compiling filedupes v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(drain_filter)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `drain_filter`
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(drain_filter)]
[INFO] [stdout]   |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `drain_filter` found for mutable reference `&mut Vec<FileContent>` in the current scope
[INFO] [stdout]   --> src/lib.rs:78:51
[INFO] [stdout]    |
[INFO] [stdout] 78 |         let duplicates: Vec<FileContent> = checks.drain_filter(|checked| *checked == *orig)
[INFO] [stdout]    |                                                   ^^^^^^^^^^^^ method not found in `&mut Vec<FileContent>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0599, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `filedupes` (lib) due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "f646582ac0a6af7d4ee3e8605074805756d363b808449c5d4f0e3b7f6cce29fb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f646582ac0a6af7d4ee3e8605074805756d363b808449c5d4f0e3b7f6cce29fb", kill_on_drop: false }`
[INFO] [stdout] f646582ac0a6af7d4ee3e8605074805756d363b808449c5d4f0e3b7f6cce29fb
