[INFO] cloning repository richardbrodie/mercury
[INFO] running `"git" "clone" "--bare" "git://github.com/richardbrodie/mercury.git" "work/cache/sources/gh/richardbrodie/mercury"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/richardbrodie/mercury'...
[INFO] running `"git" "clone" "work/cache/sources/gh/richardbrodie/mercury" "work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/richardbrodie/mercury"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/richardbrodie/mercury'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/richardbrodie/mercury" "work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/richardbrodie/mercury"`
[INFO] [stderr] Cloning into 'work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/richardbrodie/mercury'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f0ae094a094cfabe1c87c3a1b4a259c0f2629aff
[INFO] sha for GitHub repo richardbrodie/mercury: f0ae094a094cfabe1c87c3a1b4a259c0f2629aff
[INFO] validating manifest of richardbrodie/mercury on toolchain master#c0086b9e8972fef9fd4af24bae20d45021ed06c6
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of richardbrodie/mercury on toolchain try#290ac7b29f41ff9fa5232f9a1116ea71a3501063
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing richardbrodie/mercury
[INFO] finished frobbing richardbrodie/mercury
[INFO] frobbed toml for richardbrodie/mercury written to work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/richardbrodie/mercury/Cargo.toml
[INFO] started frobbing richardbrodie/mercury
[INFO] finished frobbing richardbrodie/mercury
[INFO] frobbed toml for richardbrodie/mercury written to work/ex/pr-58899/sources/try#290ac7b29f41ff9fa5232f9a1116ea71a3501063/gh/richardbrodie/mercury/Cargo.toml
[INFO] crate richardbrodie/mercury has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+290ac7b29f41ff9fa5232f9a1116ea71a3501063-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking richardbrodie/mercury against master#c0086b9e8972fef9fd4af24bae20d45021ed06c6 for pr-58899
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-58899/worker-0/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-58899/sources/master#c0086b9e8972fef9fd4af24bae20d45021ed06c6/gh/richardbrodie/mercury:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+c0086b9e8972fef9fd4af24bae20d45021ed06c6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a711755e50079ddf5b7db9fb433b05e9b0932c1cf522c954d3e3c3e972795dd0
[INFO] running `"docker" "start" "-a" "a711755e50079ddf5b7db9fb433b05e9b0932c1cf522c954d3e3c3e972795dd0"`
[INFO] [stderr]     Checking ucd-util v0.1.2
[INFO] [stderr]    Compiling syn v0.15.15
[INFO] [stderr]     Checking serde_yaml v0.8.7
[INFO] [stderr]     Checking regex-syntax v0.6.2
[INFO] [stderr]     Checking regex v1.0.5
[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]    Compiling failure_derive v0.1.3
[INFO] [stderr]     Checking failure v0.1.3
[INFO] [stderr]     Checking dotenv v0.13.0
[INFO] [stderr]     Checking mercury v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]  --> src/types.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::env;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `File`
[INFO] [stderr]  --> src/types.rs:3:21
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::fs::{self, File};
[INFO] [stderr]   |                     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]  --> src/types.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::env;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `File`
[INFO] [stderr]  --> src/types.rs:3:21
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::fs::{self, File};
[INFO] [stderr]   |                     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Feed`
[INFO] [stderr]  --> src/types.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct Feed {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Item`
[INFO] [stderr]   --> src/types.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub struct Item {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/types.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 |             fs::create_dir(&self.feed_path);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Feed`
[INFO] [stderr]  --> src/types.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct Feed {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Item`
[INFO] [stderr]   --> src/types.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub struct Item {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/types.rs:29:13
[INFO] [stderr]    |
[INFO] [stderr] 29 |             fs::create_dir(&self.feed_path);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.51s
[INFO] running `"docker" "inspect" "a711755e50079ddf5b7db9fb433b05e9b0932c1cf522c954d3e3c3e972795dd0"`
[INFO] running `"docker" "rm" "-f" "a711755e50079ddf5b7db9fb433b05e9b0932c1cf522c954d3e3c3e972795dd0"`
[INFO] [stdout] a711755e50079ddf5b7db9fb433b05e9b0932c1cf522c954d3e3c3e972795dd0