[INFO] fetching crate preserves-schema 2.3.0...
[INFO] checking preserves-schema-2.3.0 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate preserves-schema 2.3.0 into /workspace/builds/worker-92/source
[INFO] validating manifest of crates.io crate preserves-schema 2.3.0 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 preserves-schema 2.3.0
[INFO] finished tweaking crates.io crate preserves-schema 2.3.0
[INFO] tweaked toml for crates.io crate preserves-schema 2.3.0 written to /workspace/builds/worker-92/source/Cargo.toml
[INFO] crate crates.io crate preserves-schema 2.3.0 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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] 59f559bc678d17014c1a9ec71059bf0ce5845237e20478d521d097bb405e3c7d
[INFO] running `Command { std: "docker" "start" "-a" "59f559bc678d17014c1a9ec71059bf0ce5845237e20478d521d097bb405e3c7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59f559bc678d17014c1a9ec71059bf0ce5845237e20478d521d097bb405e3c7d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59f559bc678d17014c1a9ec71059bf0ce5845237e20478d521d097bb405e3c7d", kill_on_drop: false }`
[INFO] [stdout] 59f559bc678d17014c1a9ec71059bf0ce5845237e20478d521d097bb405e3c7d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-92/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] 49115e74a6617902fce86929ccad1eef5511045b4baa58751fc91ff1d0f354cb
[INFO] running `Command { std: "docker" "start" "-a" "49115e74a6617902fce86929ccad1eef5511045b4baa58751fc91ff1d0f354cb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking convert_case v0.4.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.25
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking serde_bytes v0.11.5
[INFO] [stderr]     Checking preserves v2.2.0
[INFO] [stderr]     Checking preserves-schema v2.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `module`
[INFO] [stdout]   --> src/support/interpret.rs:41:39
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn dynamic_unparse(&mut self, module: &Vec<String>, name: &str, w: &V) -> Option<V> {
[INFO] [stdout]    |                                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_module`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> src/support/interpret.rs:41:61
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn dynamic_unparse(&mut self, module: &Vec<String>, name: &str, w: &V) -> Option<V> {
[INFO] [stdout]    |                                                             ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w`
[INFO] [stdout]   --> src/support/interpret.rs:41:73
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn dynamic_unparse(&mut self, module: &Vec<String>, name: &str, w: &V) -> Option<V> {
[INFO] [stdout]    |                                                                         ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `module`
[INFO] [stdout]   --> src/support/interpret.rs:41:39
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn dynamic_unparse(&mut self, module: &Vec<String>, name: &str, w: &V) -> Option<V> {
[INFO] [stdout]    |                                       ^^^^^^ help: if this is intentional, prefix it with an underscore: `_module`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> src/support/interpret.rs:41:61
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn dynamic_unparse(&mut self, module: &Vec<String>, name: &str, w: &V) -> Option<V> {
[INFO] [stdout]    |                                                             ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `w`
[INFO] [stdout]   --> src/support/interpret.rs:41:73
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn dynamic_unparse(&mut self, module: &Vec<String>, name: &str, w: &V) -> Option<V> {
[INFO] [stdout]    |                                                                         ^ help: if this is intentional, prefix it with an underscore: `_w`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.66s
[INFO] running `Command { std: "docker" "inspect" "49115e74a6617902fce86929ccad1eef5511045b4baa58751fc91ff1d0f354cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49115e74a6617902fce86929ccad1eef5511045b4baa58751fc91ff1d0f354cb", kill_on_drop: false }`
[INFO] [stdout] 49115e74a6617902fce86929ccad1eef5511045b4baa58751fc91ff1d0f354cb