[INFO] fetching crate scoob 0.6.5...
[INFO] building scoob-0.6.5 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate scoob 0.6.5 into /workspace/builds/worker-3-tc1/source
[INFO] started tweaking crates.io crate scoob 0.6.5
[INFO] finished tweaking crates.io crate scoob 0.6.5
[INFO] tweaked toml for crates.io crate scoob 0.6.5 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate scoob 0.6.5 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate scoob 0.6.5 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded redox_syscall v0.2.8
[INFO] [stderr]   Downloaded edit v0.1.3
[INFO] [stderr]   Downloaded pin-project v1.0.7
[INFO] [stderr]   Downloaded which v4.1.0
[INFO] [stderr]   Downloaded futures-executor v0.3.15
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[INFO] [stderr]   Downloaded pin-project-internal v1.0.7
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[INFO] [stderr]   Downloaded futures-util v0.3.15
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[INFO] [stderr]   Downloaded tokio v1.6.1
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[INFO] [stderr]   Downloaded futures-io v0.3.15
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[INFO] [stderr]   Downloaded libc v0.2.95
[INFO] [stderr]   Downloaded security-framework-sys v2.2.0
[INFO] [stderr]   Downloaded crypto-mac v0.10.0
[INFO] [stderr]   Downloaded futures-core v0.3.15
[INFO] [stderr]   Downloaded futures-macro v0.3.15
[INFO] [stderr]   Downloaded http-body v0.4.2
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[INFO] [stderr]   Downloaded sha1 v0.6.0
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[INFO] [stderr]   Downloaded subtle v2.4.0
[INFO] [stderr]   Downloaded async-trait v0.1.50
[INFO] [stderr]   Downloaded rusoto_core v0.46.0
[INFO] [stderr]   Downloaded rusoto_secretsmanager v0.46.0
[INFO] [stderr]   Downloaded cc v1.0.68
[INFO] [stderr]   Downloaded mio v0.7.11
[INFO] [stderr]   Downloaded pin-project-lite v0.2.6
[INFO] [stderr]   Downloaded tokio-macros v1.2.0
[INFO] [stderr]   Downloaded futures-channel v0.3.15
[INFO] [stderr]   Downloaded slab v0.4.3
[INFO] [stderr]   Downloaded openssl-src v111.15.0+1.1.1k
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 70a4e72187aeb883d70da99217b9c28fa88119c169944ee4fbe70f2c29220710
[INFO] running `Command { std: "docker" "start" "-a" "70a4e72187aeb883d70da99217b9c28fa88119c169944ee4fbe70f2c29220710", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "70a4e72187aeb883d70da99217b9c28fa88119c169944ee4fbe70f2c29220710", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70a4e72187aeb883d70da99217b9c28fa88119c169944ee4fbe70f2c29220710", kill_on_drop: false }`
[INFO] [stdout] 70a4e72187aeb883d70da99217b9c28fa88119c169944ee4fbe70f2c29220710
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e35e2586a9cccbf7c3077be69af08b486326d77bbc6c027eb489eaf58428c51b
[INFO] running `Command { std: "docker" "start" "-a" "e35e2586a9cccbf7c3077be69af08b486326d77bbc6c027eb489eaf58428c51b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.95
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling cc v1.0.68
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling pin-project-lite v0.2.6
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling futures-task v0.3.15
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling once_cell v1.7.2
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling futures-sink v0.3.15
[INFO] [stderr]    Compiling tokio v1.6.1
[INFO] [stderr]    Compiling futures-io v0.3.15
[INFO] [stderr]    Compiling slab v0.4.3
[INFO] [stderr]    Compiling standback v0.2.17
[INFO] [stderr]    Compiling tracing-core v0.1.18
[INFO] [stderr]    Compiling openssl v0.10.34
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling http-body v0.4.2
[INFO] [stderr]    Compiling openssl-src v111.15.0+1.1.1k
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]    Compiling async-trait v0.1.50
[INFO] [stderr]    Compiling const_fn v0.4.8
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling time v0.2.26
[INFO] [stderr]    Compiling subtle v2.4.0
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling mio v0.7.11
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling tracing v0.1.26
[INFO] [stderr]    Compiling socket2 v0.4.0
[INFO] [stderr]    Compiling dirs-sys-next v0.1.2
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling crypto-mac v0.10.0
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling cpufeatures v0.1.4
[INFO] [stderr]    Compiling dirs-next v2.0.0
[INFO] [stderr]    Compiling rand_core v0.6.2
[INFO] [stderr]    Compiling zeroize v1.3.0
[INFO] [stderr]    Compiling shlex v0.1.1
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[INFO] [stderr]    Compiling libsodium-sys v0.2.7
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[INFO] [stderr]    Compiling rusoto_core v0.46.0
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling md5 v0.7.0
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]    Compiling signature v1.4.0
[INFO] [stderr]    Compiling rand_chacha v0.3.0
[INFO] [stderr]    Compiling xml-rs v0.8.3
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling which v4.1.0
[INFO] [stderr]    Compiling ed25519 v1.3.0
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling data-encoding v2.3.2
[INFO] [stderr]    Compiling rand v0.8.3
[INFO] [stderr]    Compiling dotenv v0.15.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling heck v0.3.2
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling edit v0.1.3
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling tokio-macros v1.2.0
[INFO] [stderr]    Compiling pin-project-internal v1.0.7
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling time-macros v0.1.1
[INFO] [stderr]    Compiling pin-project v1.0.7
[INFO] [stderr]    Compiling structopt v0.3.21
[INFO] [stderr]    Compiling futures-executor v0.3.15
[INFO] [stderr]    Compiling futures v0.3.15
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling serde_yaml v0.8.17
[INFO] [stderr]    Compiling hyper v0.14.8
[INFO] [stderr]    Compiling rusoto_credential v0.46.0
[INFO] [stderr]    Compiling rusoto_signature v0.46.0
[INFO] [stderr]    Compiling tokio-native-tls v0.3.0
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling rusoto_secretsmanager v0.46.0
[INFO] [stderr]    Compiling sodiumoxide v0.2.7
[INFO] [stderr]    Compiling scoob v0.6.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `exec` that must be used
[INFO] [stdout]   --> src/start.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |         command.exec();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 57 |         let _ = command.exec();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 13s
[INFO] running `Command { std: "docker" "inspect" "e35e2586a9cccbf7c3077be69af08b486326d77bbc6c027eb489eaf58428c51b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e35e2586a9cccbf7c3077be69af08b486326d77bbc6c027eb489eaf58428c51b", kill_on_drop: false }`
[INFO] [stdout] e35e2586a9cccbf7c3077be69af08b486326d77bbc6c027eb489eaf58428c51b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d162fd418f31476139cea046c8bcfd840f1625895c3e5c7b1e2283d35e583f0
[INFO] running `Command { std: "docker" "start" "-a" "8d162fd418f31476139cea046c8bcfd840f1625895c3e5c7b1e2283d35e583f0", kill_on_drop: false }`
[INFO] [stderr]    Compiling scoob v0.6.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `exec` that must be used
[INFO] [stdout]   --> src/start.rs:57:9
[INFO] [stdout]    |
[INFO] [stdout] 57 |         command.exec();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 57 |         let _ = command.exec();
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.55s
[INFO] running `Command { std: "docker" "inspect" "8d162fd418f31476139cea046c8bcfd840f1625895c3e5c7b1e2283d35e583f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d162fd418f31476139cea046c8bcfd840f1625895c3e5c7b1e2283d35e583f0", kill_on_drop: false }`
[INFO] [stdout] 8d162fd418f31476139cea046c8bcfd840f1625895c3e5c7b1e2283d35e583f0