[INFO] fetching crate jbod 1.0.1...
[INFO] checking jbod-1.0.1 against beta-2021-10-15 for beta-1.56-3
[INFO] extracting crate jbod 1.0.1 into /workspace/builds/worker-67/source
[INFO] validating manifest of crates.io crate jbod 1.0.1 on toolchain beta-2021-10-15
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jbod 1.0.1
[INFO] finished tweaking crates.io crate jbod 1.0.1
[INFO] tweaked toml for crates.io crate jbod 1.0.1 written to /workspace/builds/worker-67/source/Cargo.toml
[INFO] crate crates.io crate jbod 1.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-10-15" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] b9344f3953518993d3fd37e4d9a181bcfe507503f2e8a5137757a34705fda753
[INFO] running `Command { std: "docker" "start" "-a" "b9344f3953518993d3fd37e4d9a181bcfe507503f2e8a5137757a34705fda753", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b9344f3953518993d3fd37e4d9a181bcfe507503f2e8a5137757a34705fda753", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9344f3953518993d3fd37e4d9a181bcfe507503f2e8a5137757a34705fda753", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-67/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" "+beta-2021-10-15" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 364b1ade724a58517b286eb6d847ea7050aaf54bf60495d81c2f7b176c5f0c80
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[INFO] [stdout] warning: unused imports: `Read`, `Write`
[INFO] [stdout]   --> src/jbod/enclosure.rs:34:39
[INFO] [stdout]    |
[INFO] [stdout] 34 |     use std::io::{BufRead, BufReader, Read, Write};
[INFO] [stdout]    |                                       ^^^^  ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stdio`
[INFO] [stdout]   --> src/jbod/enclosure.rs:35:33
[INFO] [stdout]    |
[INFO] [stdout] 35 |     use std::process::{Command, Stdio};
[INFO] [stdout]    |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read`, `Write`
[INFO] [stdout]   --> src/jbod/enclosure.rs:34:39
[INFO] [stdout]    |
[INFO] [stdout] 34 |     use std::io::{BufRead, BufReader, Read, Write};
[INFO] [stdout]    |                                       ^^^^  ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stdio`
[INFO] [stdout]   --> src/jbod/enclosure.rs:35:33
[INFO] [stdout]    |
[INFO] [stdout] 35 |     use std::process::{Command, Stdio};
[INFO] [stdout]    |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HistogramOpts`, `HistogramVec`, `IntCounterVec`, `IntCounter`
[INFO] [stdout]   --> src/prometheus.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     HistogramOpts, HistogramVec, IntCounter, IntCounterVec, IntGauge, IntGaugeVec, Opts, Registry,
[INFO] [stdout]    |     ^^^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read`, `Write`
[INFO] [stdout]   --> src/jbod/enclosure.rs:34:39
[INFO] [stdout]    |
[INFO] [stdout] 34 |     use std::io::{BufRead, BufReader, Read, Write};
[INFO] [stdout]    |                                       ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stdio`
[INFO] [stdout]   --> src/jbod/enclosure.rs:35:33
[INFO] [stdout]    |
[INFO] [stdout] 35 |     use std::process::{Command, Stdio};
[INFO] [stdout]    |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `return` value
[INFO] [stdout]   --> src/prometheus.rs:91:11
[INFO] [stdout]    |
[INFO] [stdout] 91 |     return(enclosure.len() as i64)
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `HistogramOpts`, `HistogramVec`, `IntCounterVec`, `IntCounter`
[INFO] [stdout]   --> src/prometheus.rs:40:5
[INFO] [stdout]    |
[INFO] [stdout] 40 |     HistogramOpts, HistogramVec, IntCounter, IntCounterVec, IntGauge, IntGaugeVec, Opts, Registry,
[INFO] [stdout]    |     ^^^^^^^^^^^^^  ^^^^^^^^^^^^  ^^^^^^^^^^  ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/jbod/enclosure.rs:118:23
[INFO] [stdout]     |
[INFO] [stdout] 118 |         fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
[INFO] [stdout]     |                       ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Read`, `Write`
[INFO] [stdout]   --> src/jbod/enclosure.rs:34:39
[INFO] [stdout]    |
[INFO] [stdout] 34 |     use std::io::{BufRead, BufReader, Read, Write};
[INFO] [stdout]    |                                       ^^^^  ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Stdio`
[INFO] [stdout]   --> src/jbod/enclosure.rs:35:33
[INFO] [stdout]    |
[INFO] [stdout] 35 |     use std::process::{Command, Stdio};
[INFO] [stdout]    |                                 ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `return` value
[INFO] [stdout]   --> src/prometheus.rs:91:11
[INFO] [stdout]    |
[INFO] [stdout] 91 |     return(enclosure.len() as i64)
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_string_numeric`
[INFO] [stdout]   --> src/utils/helper.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn is_string_numeric(s: String) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/jbod/enclosure.rs:118:23
[INFO] [stdout]     |
[INFO] [stdout] 118 |         fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
[INFO] [stdout]     |                       ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:263:5
[INFO] [stdout]     |
[INFO] [stdout] 263 | /     match matches.subcommand() {
[INFO] [stdout] 264 | |         ("list", Some(m)) => enclosure_overview(m),
[INFO] [stdout] 265 | |         ("led", Some(m)) => DiskShelf::jbod_led_switch(m),
[INFO] [stdout] 266 | |         ("prometheus", Some(m)) => fork_prometheus(m),
[INFO] [stdout] 267 | |         _ => Ok(help()),
[INFO] [stdout] 268 | |     };
[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: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `is_string_numeric`
[INFO] [stdout]   --> src/utils/helper.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn is_string_numeric(s: String) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/jbod/enclosure.rs:118:23
[INFO] [stdout]     |
[INFO] [stdout] 118 |         fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
[INFO] [stdout]     |                       ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:263:5
[INFO] [stdout]     |
[INFO] [stdout] 263 | /     match matches.subcommand() {
[INFO] [stdout] 264 | |         ("list", Some(m)) => enclosure_overview(m),
[INFO] [stdout] 265 | |         ("led", Some(m)) => DiskShelf::jbod_led_switch(m),
[INFO] [stdout] 266 | |         ("prometheus", Some(m)) => fork_prometheus(m),
[INFO] [stdout] 267 | |         _ => Ok(help()),
[INFO] [stdout] 268 | |     };
[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: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_disk_led_locate`
[INFO] [stdout]    --> src/jbod/disks.rs:197:8
[INFO] [stdout]     |
[INFO] [stdout] 197 |     fn set_disk_led_locate(disk: String, option: &str) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_disk_led_fault`
[INFO] [stdout]    --> src/jbod/disks.rs:242:8
[INFO] [stdout]     |
[INFO] [stdout] 242 |     fn set_disk_led_fault(disk: String, option: &str) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `jbod_led_switch`
[INFO] [stdout]    --> src/jbod/disks.rs:418:12
[INFO] [stdout]     |
[INFO] [stdout] 418 |     pub fn jbod_led_switch(options: &ArgMatches) -> Result<(), ()> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_fan_table`
[INFO] [stdout]   --> src/jbod/enclosure.rs:95:12
[INFO] [stdout]    |
[INFO] [stdout] 95 |     pub fn create_fan_table() -> Table {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `JBOD_EXPORTER`
[INFO] [stdout]   --> src/utils/helper.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub const JBOD_EXPORTER: &str = "/usr/bin/prometheus-jbod-exporter";
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `verify_binary_needed`
[INFO] [stdout]   --> src/utils/helper.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub fn verify_binary_needed() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/jbod/enclosure.rs:118:23
[INFO] [stdout]     |
[INFO] [stdout] 118 |         fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
[INFO] [stdout]     |                       ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_disk_led_locate`
[INFO] [stdout]    --> src/jbod/disks.rs:197:8
[INFO] [stdout]     |
[INFO] [stdout] 197 |     fn set_disk_led_locate(disk: String, option: &str) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `set_disk_led_fault`
[INFO] [stdout]    --> src/jbod/disks.rs:242:8
[INFO] [stdout]     |
[INFO] [stdout] 242 |     fn set_disk_led_fault(disk: String, option: &str) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `jbod_led_switch`
[INFO] [stdout]    --> src/jbod/disks.rs:418:12
[INFO] [stdout]     |
[INFO] [stdout] 418 |     pub fn jbod_led_switch(options: &ArgMatches) -> Result<(), ()> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `create_fan_table`
[INFO] [stdout]   --> src/jbod/enclosure.rs:95:12
[INFO] [stdout]    |
[INFO] [stdout] 95 |     pub fn create_fan_table() -> Table {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `JBOD_EXPORTER`
[INFO] [stdout]   --> src/utils/helper.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub const JBOD_EXPORTER: &str = "/usr/bin/prometheus-jbod-exporter";
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `verify_binary_needed`
[INFO] [stdout]   --> src/utils/helper.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 58 |     pub fn verify_binary_needed() {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.52s
[INFO] running `Command { std: "docker" "inspect" "364b1ade724a58517b286eb6d847ea7050aaf54bf60495d81c2f7b176c5f0c80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "364b1ade724a58517b286eb6d847ea7050aaf54bf60495d81c2f7b176c5f0c80", kill_on_drop: false }`
[INFO] [stdout] 364b1ade724a58517b286eb6d847ea7050aaf54bf60495d81c2f7b176c5f0c80
