[INFO] cloning repository https://github.com/hegza/serpent-cli
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hegza/serpent-cli" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhegza%2Fserpent-cli", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhegza%2Fserpent-cli'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 83103be6a1a6e47a800a631cbf59046e862d3f57
[INFO] checking hegza/serpent-cli against try#55b3f428b4fac6790b1e8492e0b91ff2d80aec7c for pr-77035
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhegza%2Fserpent-cli" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hegza/serpent-cli on toolchain 55b3f428b4fac6790b1e8492e0b91ff2d80aec7c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hegza/serpent-cli
[INFO] finished tweaking git repo https://github.com/hegza/serpent-cli
[INFO] tweaked toml for git repo https://github.com/hegza/serpent-cli written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/hegza/serpent-cli already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/hegza/serpent-rs`
[INFO] [stderr]     Updating git repository `https://github.com/hegza/rustpython`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded psm v0.1.11
[INFO] [stderr]   Downloaded stacker v0.1.12
[INFO] [stderr]   Downloaded derive_deref v1.1.1
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[INFO] [stderr]   Downloaded rustc-ap-rustc_macros v673.0.0
[INFO] [stderr]   Downloaded cargo-toml-builder v0.3.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_arena v673.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_graphviz v673.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_serialize v673.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast_pretty v673.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_index v673.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_data_structures v673.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_span v673.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_target v673.0.0
[INFO] [stderr]   Downloaded rustc-ap-rustc_ast v673.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8c78fb60c77a787e59dd1e8bae5b5d66bd0c94044bab86f7ef4d6dc7d7753a8c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8c78fb60c77a787e59dd1e8bae5b5d66bd0c94044bab86f7ef4d6dc7d7753a8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c78fb60c77a787e59dd1e8bae5b5d66bd0c94044bab86f7ef4d6dc7d7753a8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c78fb60c77a787e59dd1e8bae5b5d66bd0c94044bab86f7ef4d6dc7d7753a8c", kill_on_drop: false }`
[INFO] [stdout] 8c78fb60c77a787e59dd1e8bae5b5d66bd0c94044bab86f7ef4d6dc7d7753a8c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+55b3f428b4fac6790b1e8492e0b91ff2d80aec7c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ae4208bf459c60e218e5e6c23617584fba05fbca7e9831bcd58dd04abfe0b0b1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ae4208bf459c60e218e5e6c23617584fba05fbca7e9831bcd58dd04abfe0b0b1", 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] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.44
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]     Checking smallvec v1.4.2
[INFO] [stderr]    Compiling cc v1.0.61
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]     Checking hashbrown v0.9.1
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[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]     Checking pin-project-lite v0.1.10
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[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]     Checking rustc-ap-rustc_graphviz v673.0.0
[INFO] [stderr]    Compiling siphasher v0.3.3
[INFO] [stderr]    Compiling bit-vec v0.6.2
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[INFO] [stderr]    Compiling fixedbitset v0.2.0
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[INFO] [stderr]     Checking ena v0.14.0
[INFO] [stderr]     Checking log v0.3.9
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[INFO] [stderr]    Compiling stacker v0.1.12
[INFO] [stderr]     Checking strings v0.1.1
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]     Checking md-5 v0.8.0
[INFO] [stderr]     Checking regex v1.4.1
[INFO] [stderr]    Compiling generic-array v0.12.3
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[INFO] [stderr]     Checking parking_lot_core v0.6.2
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[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]    Compiling block-buffer v0.7.3
[INFO] [stderr]    Compiling digest v0.8.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rustc-ap-rustc_serialize v673.0.0
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]    Compiling petgraph v0.5.1
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking backtrace v0.3.53
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]    Compiling sha2 v0.8.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking measureme v0.7.1
[INFO] [stderr]    Compiling ascii-canvas v2.0.0
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking color-backtrace v0.3.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking rustc-ap-rustc_index v673.0.0
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking rustc-rayon v0.3.0
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]     Checking pretty_env_logger v0.3.1
[INFO] [stderr]     Checking toml_edit v0.1.5
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling rustc-ap-rustc_macros v673.0.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.21
[INFO] [stderr]    Compiling ctor v0.1.16
[INFO] [stderr]    Compiling derive_deref v1.1.1
[INFO] [stderr]     Checking cargo-toml-builder v0.3.0
[INFO] [stderr]     Checking tracing v0.1.21
[INFO] [stderr]     Checking rustc-ap-rustc_data_structures v673.0.0
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_data_structures-673.0.0/lib.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | #![feature(optin_builtin_traits)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]    |
[INFO] [stdout]    = note: renamed to `auto_traits`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking thiserror v1.0.21
[INFO] [stderr]     Checking flexi_logger v0.16.1
[INFO] [stdout] error[E0658]: auto traits are experimental and possibly buggy
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_data_structures-673.0.0/sync.rs:30:9
[INFO] [stdout]    |
[INFO] [stdout] 30 |         pub auto trait Send {}
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #13231 <https://github.com/rust-lang/rust/issues/13231> for more information
[INFO] [stdout]    = help: add `#![feature(auto_traits)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: auto traits are experimental and possibly buggy
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-ap-rustc_data_structures-673.0.0/sync.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         pub auto trait Sync {}
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #13231 <https://github.com/rust-lang/rust/issues/13231> for more information
[INFO] [stdout]    = help: add `#![feature(auto_traits)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-ap-rustc_data_structures`
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] Some errors have detailed explanations: E0557, E0658.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stdout] For more information about an error, try `rustc --explain E0557`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ae4208bf459c60e218e5e6c23617584fba05fbca7e9831bcd58dd04abfe0b0b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae4208bf459c60e218e5e6c23617584fba05fbca7e9831bcd58dd04abfe0b0b1", kill_on_drop: false }`
[INFO] [stdout] ae4208bf459c60e218e5e6c23617584fba05fbca7e9831bcd58dd04abfe0b0b1