[INFO] fetching crate pipegen 0.1.7...
[INFO] checking pipegen-0.1.7 against try#07fecb9cf34c4979a772ba38c99d6d9144768413 for pr-87710
[INFO] extracting crate pipegen 0.1.7 into /workspace/builds/worker-36/source
[INFO] validating manifest of crates.io crate pipegen 0.1.7 on toolchain 07fecb9cf34c4979a772ba38c99d6d9144768413
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pipegen 0.1.7
[INFO] finished tweaking crates.io crate pipegen 0.1.7
[INFO] tweaked toml for crates.io crate pipegen 0.1.7 written to /workspace/builds/worker-36/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "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-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0c7481dfd8978d28aef0b1d17f98c70ae818659be54357e1867933dc6fd783ad
[INFO] running `Command { std: "docker" "start" "-a" "0c7481dfd8978d28aef0b1d17f98c70ae818659be54357e1867933dc6fd783ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c7481dfd8978d28aef0b1d17f98c70ae818659be54357e1867933dc6fd783ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c7481dfd8978d28aef0b1d17f98c70ae818659be54357e1867933dc6fd783ad", kill_on_drop: false }`
[INFO] [stdout] 0c7481dfd8978d28aef0b1d17f98c70ae818659be54357e1867933dc6fd783ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-36/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 64ff95bb9245c11d006093061d9f1024c311a414ebc8e3bfc5719c9a92ecc1b4
[INFO] running `Command { std: "docker" "start" "-a" "64ff95bb9245c11d006093061d9f1024c311a414ebc8e3bfc5719c9a92ecc1b4", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling serde v1.0.129
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]    Compiling serde_derive v1.0.129
[INFO] [stderr]    Compiling strum_macros v0.20.1
[INFO] [stderr]     Checking strum v0.20.0
[INFO] [stderr]     Checking serde_yaml v0.8.19
[INFO] [stderr]     Checking pipegen v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Block`
[INFO] [stdout]   --> src/models/function.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Block(Block),
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `args`
[INFO] [stdout]    --> src/models/function.rs:176:12
[INFO] [stdout]     |
[INFO] [stdout] 176 |     pub fn args(mut self, args: Vec<DataField>) -> Self {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Block`
[INFO] [stdout]   --> src/models/function.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     Block(Block),
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `args`
[INFO] [stdout]    --> src/models/function.rs:176:12
[INFO] [stdout]     |
[INFO] [stdout] 176 |     pub fn args(mut self, args: Vec<DataField>) -> Self {
[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 30.35s
[INFO] running `Command { std: "docker" "inspect" "64ff95bb9245c11d006093061d9f1024c311a414ebc8e3bfc5719c9a92ecc1b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64ff95bb9245c11d006093061d9f1024c311a414ebc8e3bfc5719c9a92ecc1b4", kill_on_drop: false }`
[INFO] [stdout] 64ff95bb9245c11d006093061d9f1024c311a414ebc8e3bfc5719c9a92ecc1b4