[INFO] fetching crate buildkit-llb 0.2.0...
[INFO] checking buildkit-llb-0.2.0 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate buildkit-llb 0.2.0 into /workspace/builds/worker-61/source
[INFO] validating manifest of crates.io crate buildkit-llb 0.2.0 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate buildkit-llb 0.2.0
[INFO] finished tweaking crates.io crate buildkit-llb 0.2.0
[INFO] tweaked toml for crates.io crate buildkit-llb 0.2.0 written to /workspace/builds/worker-61/source/Cargo.toml
[INFO] crate crates.io crate buildkit-llb 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing-core v0.1.10
[INFO] [stderr]   Downloaded tower-layer v0.3.0
[INFO] [stderr]   Downloaded tracing-futures v0.2.3
[INFO] [stderr]   Downloaded tracing v0.1.13
[INFO] [stderr]   Downloaded tracing-attributes v0.1.7
[INFO] [stderr]   Downloaded async-trait v0.1.24
[INFO] [stderr]   Downloaded hyper v0.13.3
[INFO] [stderr]   Downloaded tower-limit v0.3.0
[INFO] [stderr]   Downloaded tower-util v0.3.0
[INFO] [stderr]   Downloaded multimap v0.8.0
[INFO] [stderr]   Downloaded petgraph v0.5.0
[INFO] [stderr]   Downloaded which v3.1.0
[INFO] [stderr]   Downloaded buildkit-proto v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e8ab88a33b2498980873c6cc3eacaf45d5876fb6040652c7eaa1f4ce2e990f80
[INFO] running `Command { std: "docker" "start" "-a" "e8ab88a33b2498980873c6cc3eacaf45d5876fb6040652c7eaa1f4ce2e990f80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e8ab88a33b2498980873c6cc3eacaf45d5876fb6040652c7eaa1f4ce2e990f80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8ab88a33b2498980873c6cc3eacaf45d5876fb6040652c7eaa1f4ce2e990f80", kill_on_drop: false }`
[INFO] [stdout] e8ab88a33b2498980873c6cc3eacaf45d5876fb6040652c7eaa1f4ce2e990f80
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-61/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 885d1170bcc3b9dc3d27776cb20bc7a8388cad8f2bee23f8c01b8fdc46e4324a
[INFO] running `Command { std: "docker" "start" "-a" "885d1170bcc3b9dc3d27776cb20bc7a8388cad8f2bee23f8c01b8fdc46e4324a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling proc-macro2 v1.0.9
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.16
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[INFO] [stderr]     Checking lazy_static v1.4.0
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[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking futures-core v0.3.4
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking slab v0.4.2
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[INFO] [stderr]     Checking pin-project-lite v0.1.4
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling anyhow v1.0.26
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
[INFO] [stderr]    Compiling ppv-lite86 v0.2.6
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[INFO] [stderr]     Checking futures-task v0.3.4
[INFO] [stderr]    Compiling byteorder v1.3.4
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[INFO] [stderr]    Compiling rand_core v0.5.1
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[INFO] [stderr]    Compiling prost-derive v0.6.1
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[INFO] [stderr]    Compiling async-stream-impl v0.2.1
[INFO] [stderr]    Compiling async-trait v0.1.24
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[INFO] [stderr]     Checking failure v0.1.6
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[INFO] [stderr]     Checking tower-limit v0.3.0
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[INFO] [stderr]     Checking hyper v0.13.3
[INFO] [stderr]     Checking tracing-futures v0.2.3
[INFO] [stderr]     Checking tower-load v0.3.0
[INFO] [stderr]     Checking tower-balance v0.3.0
[INFO] [stderr]     Checking tower v0.3.1
[INFO] [stderr]    Compiling prost v0.6.1
[INFO] [stderr]     Checking prost-types v0.6.1
[INFO] [stderr]     Checking tonic v0.1.1
[INFO] [stderr]    Compiling tonic-build v0.1.1
[INFO] [stderr]    Compiling buildkit-proto v0.2.0
[INFO] [stderr]     Checking buildkit-llb v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: field is never read: `description`
[INFO] [stdout]   --> src/ops/fs/mkdir.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     description: HashMap<String, String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:1:9
[INFO] [stdout]    |
[INFO] [stdout] 1  | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(dead_code)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field is never read: `caps`
[INFO] [stdout]   --> src/ops/fs/mkdir.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     caps: HashMap<String, bool>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field is never read: `description`
[INFO] [stdout]   --> src/ops/fs/mkfile.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     description: HashMap<String, String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field is never read: `caps`
[INFO] [stdout]   --> src/ops/fs/mkfile.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     caps: HashMap<String, bool>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `buildkit-llb` due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: field is never read: `description`
[INFO] [stdout]   --> src/ops/fs/mkdir.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     description: HashMap<String, String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/lib.rs:1:9
[INFO] [stdout]    |
[INFO] [stdout] 1  | #![deny(warnings)]
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(dead_code)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field is never read: `caps`
[INFO] [stdout]   --> src/ops/fs/mkdir.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     caps: HashMap<String, bool>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field is never read: `description`
[INFO] [stdout]   --> src/ops/fs/mkfile.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     description: HashMap<String, String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: field is never read: `caps`
[INFO] [stdout]   --> src/ops/fs/mkfile.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     caps: HashMap<String, bool>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "885d1170bcc3b9dc3d27776cb20bc7a8388cad8f2bee23f8c01b8fdc46e4324a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "885d1170bcc3b9dc3d27776cb20bc7a8388cad8f2bee23f8c01b8fdc46e4324a", kill_on_drop: false }`
[INFO] [stdout] 885d1170bcc3b9dc3d27776cb20bc7a8388cad8f2bee23f8c01b8fdc46e4324a