[INFO] fetching crate carpo 0.2.4...
[INFO] checking carpo-0.2.4 against 1.55.0 for beta-1.56-3
[INFO] extracting crate carpo 0.2.4 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate carpo 0.2.4 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate carpo 0.2.4
[INFO] finished tweaking crates.io crate carpo 0.2.4
[INFO] tweaked toml for crates.io crate carpo 0.2.4 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate carpo 0.2.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded open v1.3.2
[INFO] [stderr]   Downloaded sciter-rs v0.5.46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ea604137ccd2f5952b98e3e566e024eb2dbfe50605b03ce41f83c95c23798f9d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ea604137ccd2f5952b98e3e566e024eb2dbfe50605b03ce41f83c95c23798f9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea604137ccd2f5952b98e3e566e024eb2dbfe50605b03ce41f83c95c23798f9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea604137ccd2f5952b98e3e566e024eb2dbfe50605b03ce41f83c95c23798f9d", kill_on_drop: false }`
[INFO] [stdout] ea604137ccd2f5952b98e3e566e024eb2dbfe50605b03ce41f83c95c23798f9d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] d1768d3b98ee82e534cbd2c3ce020a4bfe2b2de9965ce405d9994a2d225caded
[INFO] running `Command { std: "docker" "start" "-a" "d1768d3b98ee82e534cbd2c3ce020a4bfe2b2de9965ce405d9994a2d225caded", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.7
[INFO] [stderr]    Compiling getrandom v0.1.13
[INFO] [stderr]    Compiling cc v1.0.46
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]    Compiling pkg-config v0.3.17
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling serde v1.0.102
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling unicode-segmentation v1.5.0
[INFO] [stderr]     Checking linked-hash-map v0.5.2
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking remove_dir_all v0.5.2
[INFO] [stderr]     Checking open v1.3.2
[INFO] [stderr]     Checking mime v0.3.14
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking lru-cache v0.1.2
[INFO] [stderr]     Checking c2-chacha v0.2.3
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking sciter-rs v0.5.46
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]    Compiling libsqlite3-sys v0.16.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]     Checking tempfile v3.1.0
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling serde_derive v1.0.102
[INFO] [stderr]    Compiling structopt-derive v0.3.3
[INFO] [stderr]     Checking structopt v0.3.3
[INFO] [stderr]     Checking serde_json v1.0.42
[INFO] [stderr]     Checking rusqlite v0.20.0
[INFO] [stderr]     Checking carpo v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/tags.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 | /         &self.conn.execute(
[INFO] [stdout] 30 | |             r#"
[INFO] [stdout] 31 | |             create table if not exists tags(
[INFO] [stdout] 32 | |                 id integer primary key autoincrement,
[INFO] [stdout] ...  |
[INFO] [stdout] 35 | |             NO_PARAMS,
[INFO] [stdout] 36 | |         )?;
[INFO] [stdout]    | |__________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/tags.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 | /         &self.conn.execute(
[INFO] [stdout] 39 | |             r#"
[INFO] [stdout] 40 | |                CREATE TABLE IF NOT EXISTS files(
[INFO] [stdout] 41 | |                     id integer primary key autoincrement,
[INFO] [stdout] ...  |
[INFO] [stdout] 45 | |             NO_PARAMS,
[INFO] [stdout] 46 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/tags.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 | /         &self.conn.execute(
[INFO] [stdout] 49 | |             r#"
[INFO] [stdout] 50 | |                 CREATE TABLE IF NOT EXISTS files_tags(
[INFO] [stdout] 51 | |                     id integer primary key autoincrement,
[INFO] [stdout] ...  |
[INFO] [stdout] 57 | |             NO_PARAMS,
[INFO] [stdout] 58 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/tags.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 | /         &self.conn.execute(
[INFO] [stdout] 30 | |             r#"
[INFO] [stdout] 31 | |             create table if not exists tags(
[INFO] [stdout] 32 | |                 id integer primary key autoincrement,
[INFO] [stdout] ...  |
[INFO] [stdout] 35 | |             NO_PARAMS,
[INFO] [stdout] 36 | |         )?;
[INFO] [stdout]    | |__________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/tags.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 | /         &self.conn.execute(
[INFO] [stdout] 39 | |             r#"
[INFO] [stdout] 40 | |                CREATE TABLE IF NOT EXISTS files(
[INFO] [stdout] 41 | |                     id integer primary key autoincrement,
[INFO] [stdout] ...  |
[INFO] [stdout] 45 | |             NO_PARAMS,
[INFO] [stdout] 46 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/tags.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 | /         &self.conn.execute(
[INFO] [stdout] 49 | |             r#"
[INFO] [stdout] 50 | |                 CREATE TABLE IF NOT EXISTS files_tags(
[INFO] [stdout] 51 | |                     id integer primary key autoincrement,
[INFO] [stdout] ...  |
[INFO] [stdout] 57 | |             NO_PARAMS,
[INFO] [stdout] 58 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/tags.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 | /         &self.conn.execute(
[INFO] [stdout] 30 | |             r#"
[INFO] [stdout] 31 | |             create table if not exists tags(
[INFO] [stdout] 32 | |                 id integer primary key autoincrement,
[INFO] [stdout] ...  |
[INFO] [stdout] 35 | |             NO_PARAMS,
[INFO] [stdout] 36 | |         )?;
[INFO] [stdout]    | |__________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/tags.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 | /         &self.conn.execute(
[INFO] [stdout] 39 | |             r#"
[INFO] [stdout] 40 | |                CREATE TABLE IF NOT EXISTS files(
[INFO] [stdout] 41 | |                     id integer primary key autoincrement,
[INFO] [stdout] ...  |
[INFO] [stdout] 45 | |             NO_PARAMS,
[INFO] [stdout] 46 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/tags.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 | /         &self.conn.execute(
[INFO] [stdout] 49 | |             r#"
[INFO] [stdout] 50 | |                 CREATE TABLE IF NOT EXISTS files_tags(
[INFO] [stdout] 51 | |                     id integer primary key autoincrement,
[INFO] [stdout] ...  |
[INFO] [stdout] 57 | |             NO_PARAMS,
[INFO] [stdout] 58 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/tags.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 | /         &self.conn.execute(
[INFO] [stdout] 30 | |             r#"
[INFO] [stdout] 31 | |             create table if not exists tags(
[INFO] [stdout] 32 | |                 id integer primary key autoincrement,
[INFO] [stdout] ...  |
[INFO] [stdout] 35 | |             NO_PARAMS,
[INFO] [stdout] 36 | |         )?;
[INFO] [stdout]    | |__________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/tags.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 | /         &self.conn.execute(
[INFO] [stdout] 39 | |             r#"
[INFO] [stdout] 40 | |                CREATE TABLE IF NOT EXISTS files(
[INFO] [stdout] 41 | |                     id integer primary key autoincrement,
[INFO] [stdout] ...  |
[INFO] [stdout] 45 | |             NO_PARAMS,
[INFO] [stdout] 46 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> src/tags.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 | /         &self.conn.execute(
[INFO] [stdout] 49 | |             r#"
[INFO] [stdout] 50 | |                 CREATE TABLE IF NOT EXISTS files_tags(
[INFO] [stdout] 51 | |                     id integer primary key autoincrement,
[INFO] [stdout] ...  |
[INFO] [stdout] 57 | |             NO_PARAMS,
[INFO] [stdout] 58 | |         );
[INFO] [stdout]    | |_________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 13s
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d1768d3b98ee82e534cbd2c3ce020a4bfe2b2de9965ce405d9994a2d225caded", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1768d3b98ee82e534cbd2c3ce020a4bfe2b2de9965ce405d9994a2d225caded", kill_on_drop: false }`
[INFO] [stdout] d1768d3b98ee82e534cbd2c3ce020a4bfe2b2de9965ce405d9994a2d225caded
