[INFO] fetching crate rust-playground-top-crates 0.1.0...
[INFO] testing rust-playground-top-crates-0.1.0 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate rust-playground-top-crates 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate rust-playground-top-crates 0.1.0 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust-playground-top-crates 0.1.0
[INFO] finished tweaking crates.io crate rust-playground-top-crates 0.1.0
[INFO] tweaked toml for crates.io crate rust-playground-top-crates 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate rust-playground-top-crates 0.1.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f3937ca0bf6b13828284dbb655d745a97c4ca57b1e72d124c84335d12d256966
[INFO] running `Command { std: "docker" "start" "-a" "f3937ca0bf6b13828284dbb655d745a97c4ca57b1e72d124c84335d12d256966", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f3937ca0bf6b13828284dbb655d745a97c4ca57b1e72d124c84335d12d256966", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3937ca0bf6b13828284dbb655d745a97c4ca57b1e72d124c84335d12d256966", kill_on_drop: false }`
[INFO] [stdout] f3937ca0bf6b13828284dbb655d745a97c4ca57b1e72d124c84335d12d256966
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0857c178fcfaa189d17b1875d1630db0422334edec7bd732361720632d080614
[INFO] running `Command { std: "docker" "start" "-a" "0857c178fcfaa189d17b1875d1630db0422334edec7bd732361720632d080614", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling futures-core v0.3.15
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[INFO] [stderr]    Compiling cargo v0.54.0
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[INFO] [stderr]    Compiling serde_urlencoded v0.7.0
[INFO] [stderr]    Compiling toml v0.5.8
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[INFO] [stderr]    Compiling cargo-platform v0.1.1
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[INFO] [stderr]    Compiling crates-io v0.33.0
[INFO] [stderr]    Compiling rustfix v0.5.1
[INFO] [stderr]    Compiling rust-playground-top-crates v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 39s
[INFO] running `Command { std: "docker" "inspect" "0857c178fcfaa189d17b1875d1630db0422334edec7bd732361720632d080614", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0857c178fcfaa189d17b1875d1630db0422334edec7bd732361720632d080614", kill_on_drop: false }`
[INFO] [stdout] 0857c178fcfaa189d17b1875d1630db0422334edec7bd732361720632d080614
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3d3e49c8ebf6ebaccddc05b353e311ca1ced2c43b6731f4e4f8109299c140587
[INFO] running `Command { std: "docker" "start" "-a" "3d3e49c8ebf6ebaccddc05b353e311ca1ced2c43b6731f4e4f8109299c140587", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-playground-top-crates v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.75s
[INFO] running `Command { std: "docker" "inspect" "3d3e49c8ebf6ebaccddc05b353e311ca1ced2c43b6731f4e4f8109299c140587", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d3e49c8ebf6ebaccddc05b353e311ca1ced2c43b6731f4e4f8109299c140587", kill_on_drop: false }`
[INFO] [stdout] 3d3e49c8ebf6ebaccddc05b353e311ca1ced2c43b6731f4e4f8109299c140587
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0b905a11ca21bb7e3ef4a479d954a850afa3e5acd9b0788a54e3c2f4e62747fe
[INFO] running `Command { std: "docker" "start" "-a" "0b905a11ca21bb7e3ef4a479d954a850afa3e5acd9b0788a54e3c2f4e62747fe", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_playground_top_crates-106dab08f016b3d5)
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_playground_top_crates-ffa789931c246288)
[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] [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]    Doc-tests rust-playground-top-crates
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - playground_metadata_features (line 152) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - playground_metadata_features (line 152) stdout ----
[INFO] [stdout] error: expected `;`, found `default`
[INFO] [stdout]  --> src/lib.rs:153:30
[INFO] [stdout]   |
[INFO] [stdout] 3 | [package.metadata.playground]
[INFO] [stdout]   |                              ^ help: add `;` here
[INFO] [stdout] 4 | default-features = true
[INFO] [stdout]   | ------- unexpected token
[INFO] [stdout] 
[INFO] [stdout] error: expected `;`, found `features`
[INFO] [stdout]  --> src/lib.rs:154:24
[INFO] [stdout]   |
[INFO] [stdout] 4 | default-features = true
[INFO] [stdout]   |                        ^ help: add `;` here
[INFO] [stdout] 5 | features = ["std", "extra-traits"]
[INFO] [stdout]   | -------- unexpected token
[INFO] [stdout] 
[INFO] [stdout] error: expected `;`, found `all`
[INFO] [stdout]  --> src/lib.rs:155:35
[INFO] [stdout]   |
[INFO] [stdout] 5 | features = ["std", "extra-traits"]
[INFO] [stdout]   |                                   ^ help: add `;` here
[INFO] [stdout] 6 | all-features = false
[INFO] [stdout]   | --- unexpected token
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `package` in this scope
[INFO] [stdout]  --> src/lib.rs:153:2
[INFO] [stdout]   |
[INFO] [stdout] 3 | [package.metadata.playground]
[INFO] [stdout]   |  ^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]   |
[INFO] [stdout] 2 | use cargo::ops::package;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `default` in this scope
[INFO] [stdout]  --> src/lib.rs:154:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | default-features = true
[INFO] [stdout]   | ^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]   |
[INFO] [stdout] 2 | use core::default::default;
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::default::default;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `features` in this scope
[INFO] [stdout]  --> src/lib.rs:154:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | default-features = true
[INFO] [stdout]   |         ^^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::detect::features;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `features` in this scope
[INFO] [stdout]  --> src/lib.rs:155:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | features = ["std", "extra-traits"]
[INFO] [stdout]   | ^^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::detect::features;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `all` in this scope
[INFO] [stdout]  --> src/lib.rs:156:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | all-features = false
[INFO] [stdout]   | ^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]   |
[INFO] [stdout] 2 | use itertools::all;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0425]: cannot find value `features` in this scope
[INFO] [stdout]  --> src/lib.rs:156:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | all-features = false
[INFO] [stdout]   |     ^^^^^^^^ not found in this scope
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing this function
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::detect::features;
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] error[E0070]: invalid left-hand side of assignment
[INFO] [stdout]  --> src/lib.rs:154:18
[INFO] [stdout]   |
[INFO] [stdout] 4 | default-features = true
[INFO] [stdout]   | ---------------- ^
[INFO] [stdout]   | |
[INFO] [stdout]   | cannot assign to this expression
[INFO] [stdout] 
[INFO] [stdout] error[E0070]: invalid left-hand side of assignment
[INFO] [stdout]  --> src/lib.rs:156:14
[INFO] [stdout]   |
[INFO] [stdout] 6 | all-features = false
[INFO] [stdout]   | ------------ ^
[INFO] [stdout]   | |
[INFO] [stdout]   | cannot assign to this expression
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 11 previous errors
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0070, E0425.
[INFO] [stdout] For more information about an error, try `rustc --explain E0070`.
[INFO] [stdout] Couldn't compile the test.
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - playground_metadata_features (line 152)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.98s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "0b905a11ca21bb7e3ef4a479d954a850afa3e5acd9b0788a54e3c2f4e62747fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b905a11ca21bb7e3ef4a479d954a850afa3e5acd9b0788a54e3c2f4e62747fe", kill_on_drop: false }`
[INFO] [stdout] 0b905a11ca21bb7e3ef4a479d954a850afa3e5acd9b0788a54e3c2f4e62747fe