[INFO] fetching crate system_media 0.1.6...
[INFO] testing system_media-0.1.6 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate system_media 0.1.6 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate system_media 0.1.6
[INFO] finished tweaking crates.io crate system_media 0.1.6
[INFO] tweaked toml for crates.io crate system_media 0.1.6 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate system_media 0.1.6 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate system_media 0.1.6 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" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0d2a14df4059d0f9f7c386e28130cf78aa123a7d0f73666502e4c96824745fc9
[INFO] running `Command { std: "docker" "start" "-a" "0d2a14df4059d0f9f7c386e28130cf78aa123a7d0f73666502e4c96824745fc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0d2a14df4059d0f9f7c386e28130cf78aa123a7d0f73666502e4c96824745fc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0d2a14df4059d0f9f7c386e28130cf78aa123a7d0f73666502e4c96824745fc9", kill_on_drop: false }`
[INFO] [stdout] 0d2a14df4059d0f9f7c386e28130cf78aa123a7d0f73666502e4c96824745fc9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8087ab6b927479b910c454b7ff5f797eeef45c17346b9466d539d1be11ec1800
[INFO] running `Command { std: "docker" "start" "-a" "8087ab6b927479b910c454b7ff5f797eeef45c17346b9466d539d1be11ec1800", kill_on_drop: false }`
[INFO] [stderr]    Compiling system_media v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> build.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Command`
[INFO] [stdout]  --> build.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::process::Command;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/null/mod.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |         unimplemented!("system-media currently only supports macOS.");
[INFO] [stdout]    |         ------------------------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 55 |         println!("how do we stop a session?");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]    = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `title`
[INFO] [stdout]   --> src/null/mod.rs:13:25
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn set_title(&self, title: &str) {
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_title`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `artist`
[INFO] [stdout]   --> src/null/mod.rs:17:26
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn set_artist(&self, artist: &str) {
[INFO] [stdout]    |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_artist`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `album`
[INFO] [stdout]   --> src/null/mod.rs:21:25
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn set_album(&self, album: &str) {
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_album`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `genre`
[INFO] [stdout]   --> src/null/mod.rs:25:25
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn set_genre(&self, genre: &str) {
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_genre`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> src/null/mod.rs:29:25
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn set_image(&self, path: &str) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `media_type`
[INFO] [stdout]   --> src/null/mod.rs:33:30
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn set_media_type(&self, media_type: MediaType) {
[INFO] [stdout]    |                              ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_media_type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `duration`
[INFO] [stdout]   --> src/null/mod.rs:37:37
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn set_playback_duration(&self, duration: f64) {
[INFO] [stdout]    |                                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_duration`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `duration`
[INFO] [stdout]   --> src/null/mod.rs:41:36
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn set_elapsed_duration(&self, duration: f64) {
[INFO] [stdout]    |                                    ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_duration`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rate`
[INFO] [stdout]   --> src/null/mod.rs:45:33
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn set_playback_rate(&self, rate: f64) {
[INFO] [stdout]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_rate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "8087ab6b927479b910c454b7ff5f797eeef45c17346b9466d539d1be11ec1800", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8087ab6b927479b910c454b7ff5f797eeef45c17346b9466d539d1be11ec1800", kill_on_drop: false }`
[INFO] [stdout] 8087ab6b927479b910c454b7ff5f797eeef45c17346b9466d539d1be11ec1800
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0f9a4a4cdee21d1f5ad564cb864ab037ad33e9bc0053432445839fbc82eeb987
[INFO] running `Command { std: "docker" "start" "-a" "0f9a4a4cdee21d1f5ad564cb864ab037ad33e9bc0053432445839fbc82eeb987", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::env`
[INFO] [stdout]  --> build.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::env;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process::Command`
[INFO] [stdout]  --> build.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::process::Command;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/null/mod.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |         unimplemented!("system-media currently only supports macOS.");
[INFO] [stdout]    |         ------------------------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 55 |         println!("how do we stop a session?");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]    = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `title`
[INFO] [stdout]   --> src/null/mod.rs:13:25
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn set_title(&self, title: &str) {
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_title`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `artist`
[INFO] [stdout]   --> src/null/mod.rs:17:26
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn set_artist(&self, artist: &str) {
[INFO] [stdout]    |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_artist`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `album`
[INFO] [stdout]   --> src/null/mod.rs:21:25
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn set_album(&self, album: &str) {
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_album`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `genre`
[INFO] [stdout]   --> src/null/mod.rs:25:25
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn set_genre(&self, genre: &str) {
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_genre`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> src/null/mod.rs:29:25
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn set_image(&self, path: &str) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `media_type`
[INFO] [stdout]   --> src/null/mod.rs:33:30
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn set_media_type(&self, media_type: MediaType) {
[INFO] [stdout]    |                              ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_media_type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `duration`
[INFO] [stdout]   --> src/null/mod.rs:37:37
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn set_playback_duration(&self, duration: f64) {
[INFO] [stdout]    |                                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_duration`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `duration`
[INFO] [stdout]   --> src/null/mod.rs:41:36
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn set_elapsed_duration(&self, duration: f64) {
[INFO] [stdout]    |                                    ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_duration`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rate`
[INFO] [stdout]   --> src/null/mod.rs:45:33
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn set_playback_rate(&self, rate: f64) {
[INFO] [stdout]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_rate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling system_media v0.1.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/null/mod.rs:55:9
[INFO] [stdout]    |
[INFO] [stdout] 54 |         unimplemented!("system-media currently only supports macOS.");
[INFO] [stdout]    |         ------------------------------------------------------------- any code following this expression is unreachable
[INFO] [stdout] 55 |         println!("how do we stop a session?");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]    = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `title`
[INFO] [stdout]   --> src/null/mod.rs:13:25
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn set_title(&self, title: &str) {
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_title`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `artist`
[INFO] [stdout]   --> src/null/mod.rs:17:26
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn set_artist(&self, artist: &str) {
[INFO] [stdout]    |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_artist`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `album`
[INFO] [stdout]   --> src/null/mod.rs:21:25
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn set_album(&self, album: &str) {
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_album`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `genre`
[INFO] [stdout]   --> src/null/mod.rs:25:25
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn set_genre(&self, genre: &str) {
[INFO] [stdout]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_genre`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `path`
[INFO] [stdout]   --> src/null/mod.rs:29:25
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn set_image(&self, path: &str) -> Result<(), Box<dyn Error>> {
[INFO] [stdout]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `media_type`
[INFO] [stdout]   --> src/null/mod.rs:33:30
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn set_media_type(&self, media_type: MediaType) {
[INFO] [stdout]    |                              ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_media_type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `duration`
[INFO] [stdout]   --> src/null/mod.rs:37:37
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn set_playback_duration(&self, duration: f64) {
[INFO] [stdout]    |                                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_duration`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `duration`
[INFO] [stdout]   --> src/null/mod.rs:41:36
[INFO] [stdout]    |
[INFO] [stdout] 41 |     fn set_elapsed_duration(&self, duration: f64) {
[INFO] [stdout]    |                                    ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_duration`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `rate`
[INFO] [stdout]   --> src/null/mod.rs:45:33
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn set_playback_rate(&self, rate: f64) {
[INFO] [stdout]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_rate`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "0f9a4a4cdee21d1f5ad564cb864ab037ad33e9bc0053432445839fbc82eeb987", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f9a4a4cdee21d1f5ad564cb864ab037ad33e9bc0053432445839fbc82eeb987", kill_on_drop: false }`
[INFO] [stdout] 0f9a4a4cdee21d1f5ad564cb864ab037ad33e9bc0053432445839fbc82eeb987
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b66f5a377d3620dafa078776d0a5872ebc245abd0af235e4e5456597453ed292
[INFO] running `Command { std: "docker" "start" "-a" "b66f5a377d3620dafa078776d0a5872ebc245abd0af235e4e5456597453ed292", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]  --> build.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::env;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::process::Command`
[INFO] [stderr]  --> build.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::process::Command;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `system_media` (build script) generated 2 warnings
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/null/mod.rs:55:9
[INFO] [stderr]    |
[INFO] [stderr] 54 |         unimplemented!("system-media currently only supports macOS.");
[INFO] [stderr]    |         ------------------------------------------------------------- any code following this expression is unreachable
[INFO] [stderr] 55 |         println!("how do we stop a session?");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr]    = note: this warning originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `title`
[INFO] [stderr]   --> src/null/mod.rs:13:25
[INFO] [stderr]    |
[INFO] [stderr] 13 |     fn set_title(&self, title: &str) {
[INFO] [stderr]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_title`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `artist`
[INFO] [stderr]   --> src/null/mod.rs:17:26
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn set_artist(&self, artist: &str) {
[INFO] [stderr]    |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_artist`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `album`
[INFO] [stderr]   --> src/null/mod.rs:21:25
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn set_album(&self, album: &str) {
[INFO] [stderr]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_album`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `genre`
[INFO] [stderr]   --> src/null/mod.rs:25:25
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn set_genre(&self, genre: &str) {
[INFO] [stderr]    |                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_genre`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `path`
[INFO] [stderr]   --> src/null/mod.rs:29:25
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn set_image(&self, path: &str) -> Result<(), Box<dyn Error>> {
[INFO] [stderr]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_path`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `media_type`
[INFO] [stderr]   --> src/null/mod.rs:33:30
[INFO] [stderr]    |
[INFO] [stderr] 33 |     fn set_media_type(&self, media_type: MediaType) {
[INFO] [stderr]    |                              ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_media_type`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `duration`
[INFO] [stderr]   --> src/null/mod.rs:37:37
[INFO] [stderr]    |
[INFO] [stderr] 37 |     fn set_playback_duration(&self, duration: f64) {
[INFO] [stderr]    |                                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_duration`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `duration`
[INFO] [stderr]   --> src/null/mod.rs:41:36
[INFO] [stderr]    |
[INFO] [stderr] 41 |     fn set_elapsed_duration(&self, duration: f64) {
[INFO] [stderr]    |                                    ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_duration`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rate`
[INFO] [stderr]   --> src/null/mod.rs:45:33
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn set_playback_rate(&self, rate: f64) {
[INFO] [stderr]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_rate`
[INFO] [stderr] 
[INFO] [stderr] warning: `system_media` (lib) generated 10 warnings
[INFO] [stderr] warning: `system_media` (lib test) generated 10 warnings (10 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/system_media-937096a6b2b0596d)
[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] [stderr]    Doc-tests system_media
[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" "b66f5a377d3620dafa078776d0a5872ebc245abd0af235e4e5456597453ed292", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b66f5a377d3620dafa078776d0a5872ebc245abd0af235e4e5456597453ed292", kill_on_drop: false }`
[INFO] [stdout] b66f5a377d3620dafa078776d0a5872ebc245abd0af235e4e5456597453ed292