[INFO] fetching crate duplexify 1.2.2...
[INFO] testing duplexify-1.2.2 against 1.63.0 for beta-1.64-2
[INFO] extracting crate duplexify 1.2.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate duplexify 1.2.2 on toolchain 1.63.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.63.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate duplexify 1.2.2
[INFO] finished tweaking crates.io crate duplexify 1.2.2
[INFO] tweaked toml for crates.io crate duplexify 1.2.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate duplexify 1.2.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.63.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro2 v1.0.20
[INFO] [stderr]   Downloaded async-mutex v1.2.0
[INFO] [stderr]   Downloaded fastrand v1.3.5
[INFO] [stderr]   Downloaded polling v0.1.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+1.63.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0d8dd8905584b6fe2450fe6ade65f26e89f9dc18f1b47b70df23affee506dda5
[INFO] running `Command { std: "docker" "start" "-a" "0d8dd8905584b6fe2450fe6ade65f26e89f9dc18f1b47b70df23affee506dda5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d8dd8905584b6fe2450fe6ade65f26e89f9dc18f1b47b70df23affee506dda5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d8dd8905584b6fe2450fe6ade65f26e89f9dc18f1b47b70df23affee506dda5", kill_on_drop: false }`
[INFO] [stdout] 0d8dd8905584b6fe2450fe6ade65f26e89f9dc18f1b47b70df23affee506dda5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+1.63.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe0af40478b94ec6628260d31a6d11bf026454d5ce9f755b0e3f846f58b6c044
[INFO] running `Command { std: "docker" "start" "-a" "fe0af40478b94ec6628260d31a6d11bf026454d5ce9f755b0e3f846f58b6c044", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling cache-padded v1.1.1
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling fastrand v1.3.5
[INFO] [stderr]    Compiling futures-core v0.3.5
[INFO] [stderr]    Compiling waker-fn v1.1.0
[INFO] [stderr]    Compiling pin-project-lite v0.1.7
[INFO] [stderr]    Compiling futures-io v0.3.5
[INFO] [stderr]    Compiling parking v2.0.0
[INFO] [stderr]    Compiling event-listener v2.4.0
[INFO] [stderr]    Compiling once_cell v1.4.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling vec-arena v0.5.2
[INFO] [stderr]    Compiling async-task v3.0.0
[INFO] [stderr]    Compiling scoped-tls v1.0.0
[INFO] [stderr]    Compiling parking v1.0.6
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling atomic-waker v1.0.0
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling concurrent-queue v1.2.2
[INFO] [stderr]    Compiling async-mutex v1.2.0
[INFO] [stderr]    Compiling async-channel v1.4.1
[INFO] [stderr]    Compiling multitask v0.2.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling futures-lite v0.1.11
[INFO] [stderr]    Compiling kv-log-macro v1.0.7
[INFO] [stderr]    Compiling polling v0.1.8
[INFO] [stderr]    Compiling socket2 v0.3.12
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling blocking v0.5.2
[INFO] [stderr]    Compiling async-io v0.1.11
[INFO] [stderr]    Compiling async-executor v0.1.2
[INFO] [stderr]    Compiling async-std v1.6.3
[INFO] [stderr]    Compiling duplexify v1.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/lib.rs:47:1
[INFO] [stdout]    |
[INFO] [stdout] 47 | / pin_project_lite::pin_project! {
[INFO] [stdout] 48 | |     /// Combine a reader + writer into a duplex of `Read` + `Write`.
[INFO] [stdout] 49 | |     #[derive(Debug)]
[INFO] [stdout] 50 | |     pub struct Duplex<R, W> {
[INFO] [stdout] ...  |
[INFO] [stdout] 55 | |     }
[INFO] [stdout] 56 | | }
[INFO] [stdout]    | |_^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `$crate::__pin_project_internal` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.74s
[INFO] running `Command { std: "docker" "inspect" "fe0af40478b94ec6628260d31a6d11bf026454d5ce9f755b0e3f846f58b6c044", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe0af40478b94ec6628260d31a6d11bf026454d5ce9f755b0e3f846f58b6c044", kill_on_drop: false }`
[INFO] [stdout] fe0af40478b94ec6628260d31a6d11bf026454d5ce9f755b0e3f846f58b6c044
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+1.63.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 011a9b999cba319493158b45de86398bb78d5433992fae6fd4b0543921838b40
[INFO] running `Command { std: "docker" "start" "-a" "011a9b999cba319493158b45de86398bb78d5433992fae6fd4b0543921838b40", kill_on_drop: false }`
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/lib.rs:47:1
[INFO] [stdout]    |
[INFO] [stdout] 47 | / pin_project_lite::pin_project! {
[INFO] [stdout] 48 | |     /// Combine a reader + writer into a duplex of `Read` + `Write`.
[INFO] [stdout] 49 | |     #[derive(Debug)]
[INFO] [stdout] 50 | |     pub struct Duplex<R, W> {
[INFO] [stdout] ...  |
[INFO] [stdout] 55 | |     }
[INFO] [stdout] 56 | | }
[INFO] [stdout]    | |_^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `$crate::__pin_project_internal` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling duplexify v1.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/lib.rs:47:1
[INFO] [stdout]    |
[INFO] [stdout] 47 | / pin_project_lite::pin_project! {
[INFO] [stdout] 48 | |     /// Combine a reader + writer into a duplex of `Read` + `Write`.
[INFO] [stdout] 49 | |     #[derive(Debug)]
[INFO] [stdout] 50 | |     pub struct Duplex<R, W> {
[INFO] [stdout] ...  |
[INFO] [stdout] 55 | |     }
[INFO] [stdout] 56 | | }
[INFO] [stdout]    | |_^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `$crate::__pin_project_internal` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.14s
[INFO] running `Command { std: "docker" "inspect" "011a9b999cba319493158b45de86398bb78d5433992fae6fd4b0543921838b40", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "011a9b999cba319493158b45de86398bb78d5433992fae6fd4b0543921838b40", kill_on_drop: false }`
[INFO] [stdout] 011a9b999cba319493158b45de86398bb78d5433992fae6fd4b0543921838b40
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+1.63.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] f2d1b48641e0ea3d569653ab631e8eb34035e083cb51fd46c13112b2a669ce61
[INFO] running `Command { std: "docker" "start" "-a" "f2d1b48641e0ea3d569653ab631e8eb34035e083cb51fd46c13112b2a669ce61", kill_on_drop: false }`
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]   --> src/lib.rs:47:1
[INFO] [stderr]    |
[INFO] [stderr] 47 | / pin_project_lite::pin_project! {
[INFO] [stderr] 48 | |     /// Combine a reader + writer into a duplex of `Read` + `Write`.
[INFO] [stderr] 49 | |     #[derive(Debug)]
[INFO] [stderr] 50 | |     pub struct Duplex<R, W> {
[INFO] [stderr] ...  |
[INFO] [stderr] 55 | |     }
[INFO] [stderr] 56 | | }
[INFO] [stderr]    | |_^ the borrow produces a value
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this warning originates in the macro `$crate::__pin_project_internal` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `duplexify` (lib) generated 1 warning
[INFO] [stderr] warning: `duplexify` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/duplexify-b338ebe4f4195b9d)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/test.rs (/opt/rustwide/target/debug/deps/test-79d43dc6bc11e113)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test should_work ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests duplexify
[INFO] [stderr] warning: lint `missing_doc_code_examples` has been renamed to `rustdoc::missing_doc_code_examples`
[INFO] [stderr]   --> /opt/rustwide/workdir/src/lib.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     missing_doc_code_examples,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `rustdoc::missing_doc_code_examples`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 15) - compile ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.08s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f2d1b48641e0ea3d569653ab631e8eb34035e083cb51fd46c13112b2a669ce61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2d1b48641e0ea3d569653ab631e8eb34035e083cb51fd46c13112b2a669ce61", kill_on_drop: false }`
[INFO] [stdout] f2d1b48641e0ea3d569653ab631e8eb34035e083cb51fd46c13112b2a669ce61