[INFO] fetching crate opencontainers 0.0.0-alpha.2...
[INFO] checking opencontainers-0.0.0-alpha.2 against 1.95.0 for pr-155915
[INFO] extracting crate opencontainers 0.0.0-alpha.2 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate opencontainers 0.0.0-alpha.2
[INFO] finished tweaking crates.io crate opencontainers 0.0.0-alpha.2
[INFO] tweaked toml for crates.io crate opencontainers 0.0.0-alpha.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate opencontainers 0.0.0-alpha.2 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "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" "+1.95.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 263 packages to latest compatible versions
[INFO] [stderr]       Adding generic-array v0.14.7 (available: v0.14.9)
[INFO] [stderr]       Adding hyperx v0.13.2 (available: v1.4.0)
[INFO] [stderr]       Adding pretty_env_logger v0.3.1 (available: v0.5.0)
[INFO] [stderr]       Adding reqwest v0.9.24 (available: v0.13.3)
[INFO] [stderr]       Adding wasi v0.10.0+wasi-snapshot-preview1 (available: v0.10.2+wasi-snapshot-preview1)
[INFO] [stderr]       Adding www-authenticate v0.3.0 (available: v0.4.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded autocfg v0.1.8
[INFO] [stderr]   Downloaded tokio-executor v0.1.10
[INFO] [stderr]   Downloaded www-authenticate v0.3.0
[INFO] [stderr]   Downloaded time v0.1.45
[INFO] [stderr]   Downloaded ttl_cache v0.5.1
[INFO] [stderr]   Downloaded tokio-timer v0.2.13
[INFO] [stderr]   Downloaded memoffset v0.5.6
[INFO] [stderr]   Downloaded dtoa v0.4.8
[INFO] [stderr]   Downloaded tokio-tcp v0.1.4
[INFO] [stderr]   Downloaded crossbeam-queue v0.2.3
[INFO] [stderr]   Downloaded hyper-tls v0.3.2
[INFO] [stderr]   Downloaded pretty_env_logger v0.3.1
[INFO] [stderr]   Downloaded publicsuffix v1.5.6
[INFO] [stderr]   Downloaded parking_lot_core v0.6.3
[INFO] [stderr]   Downloaded lock_api v0.3.4
[INFO] [stderr]   Downloaded tokio-sync v0.1.8
[INFO] [stderr]   Downloaded reqwest v0.9.24
[INFO] [stderr]   Downloaded tokio-threadpool v0.1.18
[INFO] [stderr]   Downloaded hyper v0.12.36
[INFO] [stderr]   Downloaded mio v0.6.23
[INFO] [stderr]   Downloaded http v0.1.21
[INFO] [stderr]   Downloaded tokio-io v0.1.13
[INFO] [stderr]   Downloaded crossbeam-epoch v0.8.2
[INFO] [stderr]   Downloaded crossbeam-utils v0.7.2
[INFO] [stderr]   Downloaded crossbeam-deque v0.7.4
[INFO] [stderr]   Downloaded hyperx v0.13.2
[INFO] [stderr]   Downloaded tokio-current-thread v0.1.7
[INFO] [stderr]   Downloaded miow v0.2.2
[INFO] [stderr]   Downloaded net2 v0.2.39
[INFO] [stderr]   Downloaded tokio-reactor v0.1.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 932f01878b64661476d5e2ce9a8decaf3c79ce4ec856260b0d4b5c25cc2f7309
[INFO] running `Command { std: "docker" "start" "-a" "932f01878b64661476d5e2ce9a8decaf3c79ce4ec856260b0d4b5c25cc2f7309", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "932f01878b64661476d5e2ce9a8decaf3c79ce4ec856260b0d4b5c25cc2f7309", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "932f01878b64661476d5e2ce9a8decaf3c79ce4ec856260b0d4b5c25cc2f7309", kill_on_drop: false }`
[INFO] [stdout] 932f01878b64661476d5e2ce9a8decaf3c79ce4ec856260b0d4b5c25cc2f7309
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e68a14b550f2a7ab1614c462d55e0c4f930906ee95844112f1d1d5ec92df8468
[INFO] running `Command { std: "docker" "start" "-a" "e68a14b550f2a7ab1614c462d55e0c4f930906ee95844112f1d1d5ec92df8468", kill_on_drop: false }`
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking either v1.15.0
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]     Checking tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]     Checking matches v0.1.10
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking unicode-bidi v0.3.18
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]    Compiling openssl-sys v0.9.115
[INFO] [stderr]     Checking num_cpus v1.17.0
[INFO] [stderr]     Checking tinyvec v1.11.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking simd-adler32 v0.3.9
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]    Compiling openssl v0.10.79
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking percent-encoding v2.3.2
[INFO] [stderr]     Checking miniz_oxide v0.8.9
[INFO] [stderr]     Checking indexmap v1.9.3
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking object v0.37.3
[INFO] [stderr]     Checking form_urlencoded v1.2.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking http v0.1.21
[INFO] [stderr]     Checking string v0.2.1
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]     Checking unicode-normalization v0.1.25
[INFO] [stderr]    Compiling native-tls v0.2.18
[INFO] [stderr]    Compiling ucd-trie v0.1.7
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling parking_lot_core v0.6.3
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]    Compiling hyper v0.12.36
[INFO] [stderr]     Checking unicase v2.9.0
[INFO] [stderr]    Compiling pest v2.8.6
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[INFO] [stderr]     Checking rand_xorshift v0.1.1
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[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking tokio-executor v0.1.10
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking tokio-sync v0.1.8
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking serde_json v1.0.149
[INFO] [stderr]    Compiling mime_guess v2.0.5
[INFO] [stderr]     Checking try_from v0.3.2
[INFO] [stderr]     Checking url v1.7.2
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[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking flate2 v1.1.9
[INFO] [stderr]     Checking regex v1.12.3
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking ttl_cache v0.5.1
[INFO] [stderr]    Compiling pest_meta v2.8.6
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking cookie v0.12.0
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]     Checking hyperx v0.13.2
[INFO] [stderr]     Checking www-authenticate v0.3.0
[INFO] [stderr]    Compiling synstructure v0.13.2
[INFO] [stderr]    Compiling pest_generator v2.8.6
[INFO] [stderr]    Compiling zerofrom-derive v0.1.7
[INFO] [stderr]    Compiling yoke-derive v0.8.2
[INFO] [stderr]    Compiling zerovec-derive v0.11.3
[INFO] [stderr]    Compiling displaydoc v0.2.5
[INFO] [stderr]    Compiling serde_derive v1.0.228
[INFO] [stderr]    Compiling openssl-macros v0.1.1
[INFO] [stderr]    Compiling pest_derive v2.8.6
[INFO] [stderr]     Checking backtrace v0.3.76
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking zerofrom v0.1.7
[INFO] [stderr]     Checking yoke v0.8.2
[INFO] [stderr]     Checking zerotrie v0.2.4
[INFO] [stderr]     Checking zerovec v0.11.6
[INFO] [stderr]     Checking tinystr v0.8.3
[INFO] [stderr]     Checking potential_utf v0.1.5
[INFO] [stderr]     Checking icu_collections v2.2.0
[INFO] [stderr]     Checking icu_locale_core v2.2.0
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]     Checking icu_provider v2.2.0
[INFO] [stderr]     Checking icu_properties v2.2.0
[INFO] [stderr]     Checking icu_normalizer v2.2.0
[INFO] [stderr]     Checking chrono v0.4.44
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking idna_adapter v1.2.2
[INFO] [stderr]     Checking idna v1.1.0
[INFO] [stderr]     Checking url v2.5.8
[INFO] [stderr]     Checking pretty_env_logger v0.3.1
[INFO] [stderr]     Checking publicsuffix v1.5.6
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking reqwest v0.9.24
[INFO] [stderr]     Checking opencontainers v0.0.0-alpha.2 (/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(never_type)]
[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:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(never_type)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `opencontainers` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `opencontainers` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "e68a14b550f2a7ab1614c462d55e0c4f930906ee95844112f1d1d5ec92df8468", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e68a14b550f2a7ab1614c462d55e0c4f930906ee95844112f1d1d5ec92df8468", kill_on_drop: false }`
[INFO] [stdout] e68a14b550f2a7ab1614c462d55e0c4f930906ee95844112f1d1d5ec92df8468
