[INFO] fetching crate cargo-book 0.1.4...
[INFO] checking cargo-book-0.1.4 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate cargo-book 0.1.4 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate cargo-book 0.1.4 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo-book 0.1.4
[INFO] finished tweaking crates.io crate cargo-book 0.1.4
[INFO] tweaked toml for crates.io crate cargo-book 0.1.4 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate cargo-book 0.1.4 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded getrandom v0.2.5
[INFO] [stderr]   Downloaded tracing-core v0.1.23
[INFO] [stderr]   Downloaded http-range v0.1.5
[INFO] [stderr]   Downloaded hyper-staticfile v0.8.0
[INFO] [stderr]   Downloaded httparse v1.6.0
[INFO] [stderr]   Downloaded anyhow v1.0.56
[INFO] [stderr]   Downloaded tracing v0.1.32
[INFO] [stderr]   Downloaded h2 v0.3.12
[INFO] [stderr]   Downloaded hyper v0.14.18
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4996d0a7efd4235ab0a38c01671424eacadcf34d39f5e54151eae888d4de173e
[INFO] running `Command { std: "docker" "start" "-a" "4996d0a7efd4235ab0a38c01671424eacadcf34d39f5e54151eae888d4de173e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4996d0a7efd4235ab0a38c01671424eacadcf34d39f5e54151eae888d4de173e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4996d0a7efd4235ab0a38c01671424eacadcf34d39f5e54151eae888d4de173e", kill_on_drop: false }`
[INFO] [stdout] 4996d0a7efd4235ab0a38c01671424eacadcf34d39f5e54151eae888d4de173e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f011af5b56e6a4caea4df8d772b7ebe9fd02fac2dbf66843e6b58fe46a5ac500
[INFO] running `Command { std: "docker" "start" "-a" "f011af5b56e6a4caea4df8d772b7ebe9fd02fac2dbf66843e6b58fe46a5ac500", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.89
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling parking_lot_core v0.9.1
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking mio v0.8.2
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]     Checking http v0.2.6
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]     Checking tracing-core v0.1.23
[INFO] [stderr]     Checking getrandom v0.2.5
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]    Compiling httparse v1.6.0
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling mime_guess v2.0.4
[INFO] [stderr]     Checking tracing v0.1.32
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]    Compiling anyhow v1.0.56
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking os_str_bytes v6.0.0
[INFO] [stderr]     Checking http-range v0.1.5
[INFO] [stderr]     Checking http-body v0.4.4
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling clap_derive v3.1.4
[INFO] [stderr]     Checking tokio v1.17.0
[INFO] [stderr]     Checking clap v3.1.6
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking h2 v0.3.12
[INFO] [stderr]     Checking hyper v0.14.18
[INFO] [stderr]     Checking hyper-staticfile v0.8.0
[INFO] [stderr]     Checking cargo-book v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `clap::Parser`
[INFO] [stdout]  --> lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use clap::Parser;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `clap::Parser`
[INFO] [stdout]  --> lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use clap::Parser;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> main.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Subcommand`
[INFO] [stdout]  --> main.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use clap::{Parser, Subcommand};
[INFO] [stdout]   |                    ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures_util::future`
[INFO] [stdout]  --> main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use futures_util::future;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hyper::server::Server`
[INFO] [stdout]  --> main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use hyper::server::Server;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `make_service_fn`, `service_fn`
[INFO] [stdout]  --> main.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 | use hyper::service::{make_service_fn, service_fn};
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Body`, `Request`, `Response`
[INFO] [stdout]  --> main.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | use hyper::{Body, Request, Response};
[INFO] [stdout]   |             ^^^^  ^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hyper_staticfile::Static`
[INFO] [stdout]  --> main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use hyper_staticfile::Static;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::PathBuf`
[INFO] [stdout]  --> main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::path::PathBuf;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `clap::Parser`
[INFO] [stdout]  --> lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use clap::Parser;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: found module declaration for lib.rs
[INFO] [stdout]  --> main.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | mod lib;
[INFO] [stdout]   | ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: lib.rs is the root of this crate's library target
[INFO] [stdout]   = help: to refer to it from other targets, use the library's name as the path
[INFO] [stdout]   = note: `#[warn(special_module_name)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Subcommand`
[INFO] [stdout]  --> main.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use clap::{Parser, Subcommand};
[INFO] [stdout]   |                    ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `futures_util::future`
[INFO] [stdout]  --> main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use futures_util::future;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hyper::server::Server`
[INFO] [stdout]  --> main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use hyper::server::Server;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `make_service_fn`, `service_fn`
[INFO] [stdout]  --> main.rs:4:22
[INFO] [stdout]   |
[INFO] [stdout] 4 | use hyper::service::{make_service_fn, service_fn};
[INFO] [stdout]   |                      ^^^^^^^^^^^^^^^  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Body`, `Request`, `Response`
[INFO] [stdout]  --> main.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 | use hyper::{Body, Request, Response};
[INFO] [stdout]   |             ^^^^  ^^^^^^^  ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hyper_staticfile::Static`
[INFO] [stdout]  --> main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use hyper_staticfile::Static;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::PathBuf`
[INFO] [stdout]  --> main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::path::PathBuf;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `clap::Parser`
[INFO] [stdout]  --> lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use clap::Parser;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.08s
[INFO] running `Command { std: "docker" "inspect" "f011af5b56e6a4caea4df8d772b7ebe9fd02fac2dbf66843e6b58fe46a5ac500", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f011af5b56e6a4caea4df8d772b7ebe9fd02fac2dbf66843e6b58fe46a5ac500", kill_on_drop: false }`
[INFO] [stdout] f011af5b56e6a4caea4df8d772b7ebe9fd02fac2dbf66843e6b58fe46a5ac500