[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] testing richardbrodie/mercury against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frichardbrodie%2Fmercury" "/workspace/builds/worker-93/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-93/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/richardbrodie/mercury on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-93/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: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a9c1996d9f18bf5b394ba0f87b28580fb786f1723f9306c7fc0b727a767b3017
[INFO] running `Command { std: "docker" "start" "-a" "a9c1996d9f18bf5b394ba0f87b28580fb786f1723f9306c7fc0b727a767b3017", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a9c1996d9f18bf5b394ba0f87b28580fb786f1723f9306c7fc0b727a767b3017", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9c1996d9f18bf5b394ba0f87b28580fb786f1723f9306c7fc0b727a767b3017", kill_on_drop: false }`
[INFO] [stdout] a9c1996d9f18bf5b394ba0f87b28580fb786f1723f9306c7fc0b727a767b3017
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf2fe1ea105b8c0b0b24b8cd99473f24cc9f93befac5e4809779734dd98ad998
[INFO] running `Command { std: "docker" "start" "-a" "cf2fe1ea105b8c0b0b24b8cd99473f24cc9f93befac5e4809779734dd98ad998", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling proc-macro2 v0.4.20
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]    Compiling regex v1.0.5
[INFO] [stderr]    Compiling ucd-util v0.1.2
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]    Compiling rustc-demangle v0.1.9
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling ryu v0.2.6
[INFO] [stderr]    Compiling linked-hash-map v0.5.1
[INFO] [stderr]    Compiling termcolor v1.0.4
[INFO] [stderr]    Compiling dtoa v0.4.3
[INFO] [stderr]    Compiling byteorder v1.2.7
[INFO] [stderr]    Compiling itoa v0.4.3
[INFO] [stderr]    Compiling safemem v0.3.0
[INFO] [stderr]    Compiling lazy_static v1.1.0
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling dirs v1.0.4
[INFO] [stderr]    Compiling num_cpus v1.8.0
[INFO] [stderr]    Compiling humantime v1.1.1
[INFO] [stderr]    Compiling yaml-rust v0.4.2
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling regex-syntax v0.6.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.24
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling quote v0.6.9
[INFO] [stderr]    Compiling serde_yaml v0.8.7
[INFO] [stderr]    Compiling serde_json v1.0.32
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling syn v0.15.15
[INFO] [stderr]    Compiling env_logger v0.5.13
[INFO] [stderr]    Compiling 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 v0.1.3
[INFO] [stderr]    Compiling dotenv v0.13.0
[INFO] [stderr]    Compiling 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: struct is never constructed: `Feed`
[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 is never constructed: `Item`
[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: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 43.61s
[INFO] running `Command { std: "docker" "inspect" "cf2fe1ea105b8c0b0b24b8cd99473f24cc9f93befac5e4809779734dd98ad998", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf2fe1ea105b8c0b0b24b8cd99473f24cc9f93befac5e4809779734dd98ad998", kill_on_drop: false }`
[INFO] [stdout] cf2fe1ea105b8c0b0b24b8cd99473f24cc9f93befac5e4809779734dd98ad998
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f34b17318ce73b615044c303ec2d2c6b593ea1cd385921dc84fcbe538a913f08
[INFO] running `Command { std: "docker" "start" "-a" "f34b17318ce73b615044c303ec2d2c6b593ea1cd385921dc84fcbe538a913f08", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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: struct is never constructed: `Feed`
[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 is never constructed: `Item`
[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: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.65s
[INFO] running `Command { std: "docker" "inspect" "f34b17318ce73b615044c303ec2d2c6b593ea1cd385921dc84fcbe538a913f08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f34b17318ce73b615044c303ec2d2c6b593ea1cd385921dc84fcbe538a913f08", kill_on_drop: false }`
[INFO] [stdout] f34b17318ce73b615044c303ec2d2c6b593ea1cd385921dc84fcbe538a913f08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-93/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 539d3af58940c137fdfa1d20ab6d02d6b13454faa4e27f86dcef5bc98db4fc4a
[INFO] running `Command { std: "docker" "start" "-a" "539d3af58940c137fdfa1d20ab6d02d6b13454faa4e27f86dcef5bc98db4fc4a", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Feed`
[INFO] [stderr]  --> src/types.rs:6:12
[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:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub struct Item {
[INFO] [stderr]    |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `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: `mercury` (bin "mercury" test) generated 4 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.75s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mercury-37b26d30e7740721)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "539d3af58940c137fdfa1d20ab6d02d6b13454faa4e27f86dcef5bc98db4fc4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "539d3af58940c137fdfa1d20ab6d02d6b13454faa4e27f86dcef5bc98db4fc4a", kill_on_drop: false }`
[INFO] [stdout] 539d3af58940c137fdfa1d20ab6d02d6b13454faa4e27f86dcef5bc98db4fc4a