[INFO] cloning repository https://github.com/richardbrodie/mercury
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/richardbrodie/mercury" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frichardbrodie%2Fmercury", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frichardbrodie%2Fmercury'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f0ae094a094cfabe1c87c3a1b4a259c0f2629aff
[INFO] checking richardbrodie/mercury against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frichardbrodie%2Fmercury" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/richardbrodie/mercury on toolchain 5518eaa946291f00471af8b254b2a1715f234882
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/richardbrodie/mercury
[INFO] finished tweaking git repo https://github.com/richardbrodie/mercury
[INFO] tweaked toml for git repo https://github.com/richardbrodie/mercury written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/richardbrodie/mercury 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" "+5518eaa946291f00471af8b254b2a1715f234882" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nodrop v0.1.12
[INFO] [stderr]   Downloaded ucd-util v0.1.2
[INFO] [stderr]   Downloaded safemem v0.3.0
[INFO] [stderr]   Downloaded serde_yaml v0.8.7
[INFO] [stderr]   Downloaded dtoa v0.4.3
[INFO] [stderr]   Downloaded arrayvec v0.4.7
[INFO] [stderr]   Downloaded dotenv v0.13.0
[INFO] [stderr]   Downloaded num_cpus v1.8.0
[INFO] [stderr]   Downloaded yaml-rust v0.4.2
[INFO] [stderr]   Downloaded syn v0.15.15
[INFO] [stderr]   Downloaded pretty_env_logger v0.2.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bc0ba821f409507756ddb2af6333fb64238daa2b64f8415fb7f96c2fac38c58d
[INFO] running `Command { std: "docker" "start" "-a" "bc0ba821f409507756ddb2af6333fb64238daa2b64f8415fb7f96c2fac38c58d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bc0ba821f409507756ddb2af6333fb64238daa2b64f8415fb7f96c2fac38c58d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bc0ba821f409507756ddb2af6333fb64238daa2b64f8415fb7f96c2fac38c58d", kill_on_drop: false }`
[INFO] [stdout] bc0ba821f409507756ddb2af6333fb64238daa2b64f8415fb7f96c2fac38c58d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+5518eaa946291f00471af8b254b2a1715f234882" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1520beb22d49663e6d90c876cabc4eaa4d81071f1f22efdf455b1f69cc2a6e80
[INFO] running `Command { std: "docker" "start" "-a" "1520beb22d49663e6d90c876cabc4eaa4d81071f1f22efdf455b1f69cc2a6e80", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling regex v1.0.5
[INFO] [stderr]     Checking ucd-util v0.1.2
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]     Checking linked-hash-map v0.5.1
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking termcolor v1.0.4
[INFO] [stderr]     Checking dtoa v0.4.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]     Checking safemem v0.3.0
[INFO] [stderr]     Checking itoa v0.4.3
[INFO] [stderr]     Checking memchr v2.1.1
[INFO] [stderr]     Checking dirs v1.0.4
[INFO] [stderr]     Checking num_cpus v1.8.0
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking serde_json v1.0.32
[INFO] [stderr]     Checking yaml-rust v0.4.2
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking serde_yaml v0.8.7
[INFO] [stderr]    Compiling quote v0.6.9
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]    Compiling syn v0.15.15
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]     Checking pretty_env_logger v0.2.4
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]     Checking failure v0.1.3
[INFO] [stderr]     Checking dotenv v0.13.0
[INFO] [stderr]     Checking mercury v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `File`
[INFO] [stdout]  --> src/types.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fs::{self, File};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `File`
[INFO] [stdout]  --> src/types.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::fs::{self, File};
[INFO] [stdout]   |                     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Feed` is never constructed
[INFO] [stdout]  --> src/types.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Feed {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Item` is never constructed
[INFO] [stdout]   --> src/types.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Item {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Feed` is never constructed
[INFO] [stdout]  --> src/types.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct Feed {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Item` is never constructed
[INFO] [stdout]   --> src/types.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Item {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/types.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |             fs::create_dir(&self.feed_path);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 29 |             let _ = fs::create_dir(&self.feed_path);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/types.rs:29:13
[INFO] [stdout]    |
[INFO] [stdout] 29 |             fs::create_dir(&self.feed_path);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 29 |             let _ = fs::create_dir(&self.feed_path);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.83s
[INFO] running `Command { std: "docker" "inspect" "1520beb22d49663e6d90c876cabc4eaa4d81071f1f22efdf455b1f69cc2a6e80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1520beb22d49663e6d90c876cabc4eaa4d81071f1f22efdf455b1f69cc2a6e80", kill_on_drop: false }`
[INFO] [stdout] 1520beb22d49663e6d90c876cabc4eaa4d81071f1f22efdf455b1f69cc2a6e80
