[INFO] fetching crate yang2 0.1.8...
[INFO] checking yang2-0.1.8 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate yang2 0.1.8 into /workspace/builds/worker-43/source
[INFO] validating manifest of crates.io crate yang2 0.1.8 on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yang2 0.1.8
[INFO] finished tweaking crates.io crate yang2 0.1.8
[INFO] tweaked toml for crates.io crate yang2 0.1.8 written to /workspace/builds/worker-43/source/Cargo.toml
[INFO] crate crates.io crate yang2 0.1.8 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "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 clang-sys v1.1.1
[INFO] [stderr]   Downloaded libyang2-sys v0.1.7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe612014d56a711fd7994d0026ef075389c4e9166c005d04d6b6dabcdf69ed54
[INFO] running `Command { std: "docker" "start" "-a" "fe612014d56a711fd7994d0026ef075389c4e9166c005d04d6b6dabcdf69ed54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe612014d56a711fd7994d0026ef075389c4e9166c005d04d6b6dabcdf69ed54", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe612014d56a711fd7994d0026ef075389c4e9166c005d04d6b6dabcdf69ed54", kill_on_drop: false }`
[INFO] [stdout] fe612014d56a711fd7994d0026ef075389c4e9166c005d04d6b6dabcdf69ed54
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-43/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e33b275213068004eb1c356ccba4334eff8001826d0067a5a9af0187f56cdc79
[INFO] running `Command { std: "docker" "start" "-a" "e33b275213068004eb1c356ccba4334eff8001826d0067a5a9af0187f56cdc79", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]    Compiling libc v0.2.87
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]     Checking plotters-backend v0.3.0
[INFO] [stderr]    Compiling libyang2-sys v0.1.7
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking regex-syntax v0.6.22
[INFO] [stderr]    Compiling crossbeam-utils v0.8.3
[INFO] [stderr]    Compiling memoffset v0.6.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]     Checking itertools v0.10.0
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking plotters-svg v0.3.0
[INFO] [stderr]     Checking criterion-plot v0.4.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking crossbeam-epoch v0.9.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.0
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking plotters v0.3.0
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking bstr v0.2.15
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]     Checking csv v1.1.5
[INFO] [stderr]     Checking tinytemplate v1.2.0
[INFO] [stderr]    Compiling num-derive v0.3.3
[INFO] [stderr]     Checking yang2 v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `context`
[INFO] [stdout]    --> src/schema.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 |     context: &'a Context,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `context`
[INFO] [stdout]    --> src/schema.rs:108:5
[INFO] [stdout]     |
[INFO] [stdout] 108 |     context: &'a Context,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking criterion v0.3.4
[INFO] [stdout] warning: field is never read: `context`
[INFO] [stdout]    --> src/schema.rs:101:5
[INFO] [stdout]     |
[INFO] [stdout] 101 |     context: &'a Context,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `context`
[INFO] [stdout]    --> src/schema.rs:108:5
[INFO] [stdout]     |
[INFO] [stdout] 108 |     context: &'a Context,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 26.69s
[INFO] running `Command { std: "docker" "inspect" "e33b275213068004eb1c356ccba4334eff8001826d0067a5a9af0187f56cdc79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e33b275213068004eb1c356ccba4334eff8001826d0067a5a9af0187f56cdc79", kill_on_drop: false }`
[INFO] [stdout] e33b275213068004eb1c356ccba4334eff8001826d0067a5a9af0187f56cdc79