[INFO] fetching crate irclap 0.1.0...
[INFO] checking irclap-0.1.0 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate irclap 0.1.0 into /workspace/builds/worker-31/source
[INFO] validating manifest of crates.io crate irclap 0.1.0 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate irclap 0.1.0
[INFO] finished tweaking crates.io crate irclap 0.1.0
[INFO] tweaked toml for crates.io crate irclap 0.1.0 written to /workspace/builds/worker-31/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f0d9cf5384a1a1b3ab05dc1e191debcbccf4ec3c7a46764f35710edd24e2da5b
[INFO] running `Command { std: "docker" "start" "-a" "f0d9cf5384a1a1b3ab05dc1e191debcbccf4ec3c7a46764f35710edd24e2da5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f0d9cf5384a1a1b3ab05dc1e191debcbccf4ec3c7a46764f35710edd24e2da5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0d9cf5384a1a1b3ab05dc1e191debcbccf4ec3c7a46764f35710edd24e2da5b", kill_on_drop: false }`
[INFO] [stdout] f0d9cf5384a1a1b3ab05dc1e191debcbccf4ec3c7a46764f35710edd24e2da5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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" "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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] afe6481a9caa3c9e7d74b9ca73d7484818f3b5fd03e0f6b5aab9696e1f88fa73
[INFO] running `Command { std: "docker" "start" "-a" "afe6481a9caa3c9e7d74b9ca73d7484818f3b5fd03e0f6b5aab9696e1f88fa73", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling openssl v0.10.36
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]     Checking once_cell v1.8.0
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[INFO] [stderr]     Checking gimli v0.25.0
[INFO] [stderr]     Checking adler v1.0.2
[INFO] [stderr]     Checking rustc-demangle v0.1.21
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[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling openssl-sys v0.9.67
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]    Compiling backtrace v0.3.61
[INFO] [stderr]     Checking serde v1.0.130
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[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking bytes v0.4.12
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[INFO] [stderr]     Checking encoding v0.2.33
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]    Compiling parking_lot_core v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking object v0.26.2
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking tokio-codec v0.1.2
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[INFO] [stderr]     Checking tokio-udp v0.1.6
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[INFO] [stderr]     Checking addr2line v0.16.0
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking tokio-core v0.1.18
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]     Checking tokio-tls v0.2.1
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking irc v0.13.6
[INFO] [stderr]     Checking irclap v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![feature(conservative_impl_trait)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:91:86
[INFO] [stdout]    |
[INFO] [stdout] 91 | impl<F> IrclapCommandProcessor for F where F: for<'af> Fn(clap::ArgMatches<'af>, Box<IrclapResponseStream + 'af>) {
[INFO] [stdout]    |                                                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn IrclapResponseStream + 'af`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:94:45
[INFO] [stdout]    |
[INFO] [stdout] 94 |         let rstream = Box::new(resp) as Box<IrclapResponseStream + 'a>;
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn IrclapResponseStream + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> src/lib.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | #![feature(conservative_impl_trait)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `conservative_impl_trait` has been stable since 1.26.0 and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:91:86
[INFO] [stdout]    |
[INFO] [stdout] 91 | impl<F> IrclapCommandProcessor for F where F: for<'af> Fn(clap::ArgMatches<'af>, Box<IrclapResponseStream + 'af>) {
[INFO] [stdout]    |                                                                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn IrclapResponseStream + 'af`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:94:45
[INFO] [stdout]    |
[INFO] [stdout] 94 |         let rstream = Box::new(resp) as Box<IrclapResponseStream + 'a>;
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn IrclapResponseStream + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `irclap` due to 2 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "afe6481a9caa3c9e7d74b9ca73d7484818f3b5fd03e0f6b5aab9696e1f88fa73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afe6481a9caa3c9e7d74b9ca73d7484818f3b5fd03e0f6b5aab9696e1f88fa73", kill_on_drop: false }`
[INFO] [stdout] afe6481a9caa3c9e7d74b9ca73d7484818f3b5fd03e0f6b5aab9696e1f88fa73
