[INFO] fetching crate revent 0.29.0...
[INFO] checking revent-0.29.0 against master#ff1737bb00913444173658b4e0b274fd79aabf66 for pr-132712-1
[INFO] extracting crate revent 0.29.0 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate revent 0.29.0 on toolchain ff1737bb00913444173658b4e0b274fd79aabf66
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate revent 0.29.0
[INFO] finished tweaking crates.io crate revent 0.29.0
[INFO] tweaked toml for crates.io crate revent 0.29.0 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate revent 0.29.0 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" "+ff1737bb00913444173658b4e0b274fd79aabf66" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_json v1.0.53
[INFO] [stderr]   Downloaded quickcheck_macros v0.9.1
[INFO] [stderr]   Downloaded isize-vec v0.1.1
[INFO] [stderr]   Downloaded crossbeam-queue v0.2.2
[INFO] [stderr]   Downloaded criterion-plot v0.4.2
[INFO] [stderr]   Downloaded serde_derive v1.0.111
[INFO] [stderr]   Downloaded oorandom v11.1.1
[INFO] [stderr]   Downloaded serde v1.0.111
[INFO] [stderr]   Downloaded criterion v0.3.2
[INFO] [stderr]   Downloaded syn v1.0.30
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a4f3457ba6fe6f8dbda8aa5dd2aa295bc65c3d2dffaf1e51997daa5d04bcf17
[INFO] running `Command { std: "docker" "start" "-a" "1a4f3457ba6fe6f8dbda8aa5dd2aa295bc65c3d2dffaf1e51997daa5d04bcf17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a4f3457ba6fe6f8dbda8aa5dd2aa295bc65c3d2dffaf1e51997daa5d04bcf17", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a4f3457ba6fe6f8dbda8aa5dd2aa295bc65c3d2dffaf1e51997daa5d04bcf17", kill_on_drop: false }`
[INFO] [stdout] 1a4f3457ba6fe6f8dbda8aa5dd2aa295bc65c3d2dffaf1e51997daa5d04bcf17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 924bcb7bce5b9826acb072be88d47d21c135e40964ee950e44a607a27141147b
[INFO] running `Command { std: "docker" "start" "-a" "924bcb7bce5b9826acb072be88d47d21c135e40964ee950e44a607a27141147b", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling serde v1.0.111
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling syn v1.0.30
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking crossbeam-queue v0.2.2
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rayon v1.3.0
[INFO] [stderr]     Checking clap v2.33.1
[INFO] [stderr]     Checking plotters v0.2.15
[INFO] [stderr]     Checking criterion-plot v0.4.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking isize-vec v0.1.1
[INFO] [stderr]     Checking oorandom v11.1.1
[INFO] [stderr]     Checking revent v0.29.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0635]: unknown feature `drain_filter`
[INFO] [stdout]   --> src/lib.rs:63:28
[INFO] [stdout]    |
[INFO] [stdout] 63 | #![feature(coerce_unsized, drain_filter, unsize)]
[INFO] [stdout]    |                            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0635`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `revent` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "924bcb7bce5b9826acb072be88d47d21c135e40964ee950e44a607a27141147b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "924bcb7bce5b9826acb072be88d47d21c135e40964ee950e44a607a27141147b", kill_on_drop: false }`
[INFO] [stdout] 924bcb7bce5b9826acb072be88d47d21c135e40964ee950e44a607a27141147b