[INFO] fetching crate parse-book-source 0.7.0...
[INFO] checking parse-book-source-0.7.0 against 98fd715edd3a0a5aa8f2041d7e20a3143b0fc0d3 for pr-160235-1
[INFO] extracting crate parse-book-source 0.7.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate parse-book-source 0.7.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate parse-book-source 0.7.0
[INFO] tweaked toml for crates.io crate parse-book-source 0.7.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate parse-book-source 0.7.0 on toolchain 98fd715edd3a0a5aa8f2041d7e20a3143b0fc0d3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+98fd715edd3a0a5aa8f2041d7e20a3143b0fc0d3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate parse-book-source 0.7.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+98fd715edd3a0a5aa8f2041d7e20a3143b0fc0d3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]    --> Cargo.toml:153:1
[INFO] [stderr]     |
[INFO] [stderr] 153 | readme = "README.md"
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: `parse-book-source` (manifest) generated 1 warning
[INFO] [stderr]     Updating crates.io index
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 2a7ce55f5e99b363a18d52858891b8eb52c59cedd1cab869f5bd83ac4f7fbf96
[INFO] running `Command { std: "docker" "start" "2a7ce55f5e99b363a18d52858891b8eb52c59cedd1cab869f5bd83ac4f7fbf96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a7ce55f5e99b363a18d52858891b8eb52c59cedd1cab869f5bd83ac4f7fbf96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "2a7ce55f5e99b363a18d52858891b8eb52c59cedd1cab869f5bd83ac4f7fbf96" "/opt/rustwide/cargo-home/bin/cargo" "+98fd715edd3a0a5aa8f2041d7e20a3143b0fc0d3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a7ce55f5e99b363a18d52858891b8eb52c59cedd1cab869f5bd83ac4f7fbf96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "2a7ce55f5e99b363a18d52858891b8eb52c59cedd1cab869f5bd83ac4f7fbf96" "/opt/rustwide/cargo-home/bin/cargo" "+98fd715edd3a0a5aa8f2041d7e20a3143b0fc0d3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]    --> Cargo.toml:153:1
[INFO] [stderr]     |
[INFO] [stderr] 153 | readme = "README.md"
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: `parse-book-source` (manifest) generated 1 warning
[INFO] [stderr]    Compiling quote v1.0.45
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[INFO] [stderr]     Checking parse-book-source v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `BookSourceError`
[INFO] [stdout]  --> src/engine/internal.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::error::{BookSourceError, Result};
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `BookSourceError`
[INFO] [stdout]  --> src/engine/internal.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::error::{BookSourceError, Result};
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 50.78s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: bytecheck v0.8.2, rkyv v0.8.16
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "2a7ce55f5e99b363a18d52858891b8eb52c59cedd1cab869f5bd83ac4f7fbf96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a7ce55f5e99b363a18d52858891b8eb52c59cedd1cab869f5bd83ac4f7fbf96", kill_on_drop: false }`
[INFO] [stdout] 2a7ce55f5e99b363a18d52858891b8eb52c59cedd1cab869f5bd83ac4f7fbf96