[INFO] cloning repository https://github.com/tcrammond/egghead-rust-cli
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tcrammond/egghead-rust-cli" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftcrammond%2Fegghead-rust-cli", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftcrammond%2Fegghead-rust-cli'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d3947fe1c88bb77dc24606908e7c64b608e5c159
[INFO] building tcrammond/egghead-rust-cli against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftcrammond%2Fegghead-rust-cli" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/tcrammond/egghead-rust-cli
[INFO] finished tweaking git repo https://github.com/tcrammond/egghead-rust-cli
[INFO] tweaked toml for git repo https://github.com/tcrammond/egghead-rust-cli written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/tcrammond/egghead-rust-cli 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 git repo https://github.com/tcrammond/egghead-rust-cli 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 rprompt v1.0.5
[INFO] [stderr]   Downloaded predicates v2.1.1
[INFO] [stderr]   Downloaded termtree v0.2.4
[INFO] [stderr]   Downloaded predicates-core v1.0.3
[INFO] [stderr]   Downloaded predicates-tree v1.0.5
[INFO] [stderr]   Downloaded edit v0.1.3
[INFO] [stderr]   Downloaded assert_cmd v2.0.4
[INFO] [stderr]   Downloaded eyre v0.6.6
[INFO] [stderr]   Downloaded getrandom v0.2.4
[INFO] [stderr]   Downloaded backtrace v0.3.63
[INFO] [stderr]   Downloaded owo-colors v3.2.0
[INFO] [stderr]   Downloaded globset v0.4.8
[INFO] [stderr]   Downloaded assert_fs v1.0.7
[INFO] [stderr]   Downloaded tracing-subscriber v0.3.7
[INFO] [stderr]   Downloaded color-spantrace v0.2.0
[INFO] [stderr]   Downloaded libc v0.2.123
[INFO] [stderr]   Downloaded color-eyre v0.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 8db227cf440a6ac492c08c0691e76d9261f65c4816a45688d95319390e7b7bd9
[INFO] running `Command { std: "docker" "start" "-a" "8db227cf440a6ac492c08c0691e76d9261f65c4816a45688d95319390e7b7bd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8db227cf440a6ac492c08c0691e76d9261f65c4816a45688d95319390e7b7bd9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8db227cf440a6ac492c08c0691e76d9261f65c4816a45688d95319390e7b7bd9", kill_on_drop: false }`
[INFO] [stdout] 8db227cf440a6ac492c08c0691e76d9261f65c4816a45688d95319390e7b7bd9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 999d706b51762d06fb13a9159a0e94f14c3cbe922d9c53a1758fffff259884ea
[INFO] running `Command { std: "docker" "start" "-a" "999d706b51762d06fb13a9159a0e94f14c3cbe922d9c53a1758fffff259884ea", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.123
[INFO] [stderr]    Compiling once_cell v1.9.0
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling crossbeam-utils v0.8.8
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling sharded-slab v0.1.4
[INFO] [stderr]    Compiling pin-project-lite v0.2.8
[INFO] [stderr]    Compiling backtrace v0.3.63
[INFO] [stderr]    Compiling predicates-core v1.0.3
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling gimli v0.26.1
[INFO] [stderr]    Compiling fastrand v1.7.0
[INFO] [stderr]    Compiling tracing v0.1.29
[INFO] [stderr]    Compiling eyre v0.6.6
[INFO] [stderr]    Compiling thread_local v1.1.4
[INFO] [stderr]    Compiling bstr v0.2.17
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling itertools v0.10.3
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling object v0.27.1
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling termtree v0.2.4
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling owo-colors v3.2.0
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling predicates-tree v1.0.5
[INFO] [stderr]    Compiling deunicode v0.4.3
[INFO] [stderr]    Compiling slug v0.1.4
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling tempfile v3.3.0
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling which v4.2.5
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling globset v0.4.8
[INFO] [stderr]    Compiling rprompt v1.0.5
[INFO] [stderr]    Compiling float-cmp v0.9.0
[INFO] [stderr]    Compiling directories v4.0.1
[INFO] [stderr]    Compiling edit v0.1.3
[INFO] [stderr]    Compiling tracing-subscriber v0.3.7
[INFO] [stderr]    Compiling predicates v2.1.1
[INFO] [stderr]    Compiling ignore v0.4.18
[INFO] [stderr]    Compiling tracing-error v0.2.0
[INFO] [stderr]    Compiling addr2line v0.17.0
[INFO] [stderr]    Compiling globwalk v0.8.1
[INFO] [stderr]    Compiling color-spantrace v0.2.0
[INFO] [stderr]    Compiling assert_fs v1.0.7
[INFO] [stderr]    Compiling color-eyre v0.6.0
[INFO] [stderr]    Compiling structopt v0.3.26
[INFO] [stderr]    Compiling digital-garden v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |             fs::rename(&filepath, &dest_path);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[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] 58 |             let _ = fs::rename(&filepath, &dest_path);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 21.37s
[INFO] running `Command { std: "docker" "inspect" "999d706b51762d06fb13a9159a0e94f14c3cbe922d9c53a1758fffff259884ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "999d706b51762d06fb13a9159a0e94f14c3cbe922d9c53a1758fffff259884ea", kill_on_drop: false }`
[INFO] [stdout] 999d706b51762d06fb13a9159a0e94f14c3cbe922d9c53a1758fffff259884ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 2772b0d83eded61e02878de885da4f1776d0239fd6cd9d7b7fa3c6e5eae29d8a
[INFO] running `Command { std: "docker" "start" "-a" "2772b0d83eded61e02878de885da4f1776d0239fd6cd9d7b7fa3c6e5eae29d8a", kill_on_drop: false }`
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |             fs::rename(&filepath, &dest_path);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[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] 58 |             let _ = fs::rename(&filepath, &dest_path);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling assert_cmd v2.0.4
[INFO] [stderr]    Compiling digital-garden v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/write.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |             fs::rename(&filepath, &dest_path);
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[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] 58 |             let _ = fs::rename(&filepath, &dest_path);
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 2.00s
[INFO] running `Command { std: "docker" "inspect" "2772b0d83eded61e02878de885da4f1776d0239fd6cd9d7b7fa3c6e5eae29d8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2772b0d83eded61e02878de885da4f1776d0239fd6cd9d7b7fa3c6e5eae29d8a", kill_on_drop: false }`
[INFO] [stdout] 2772b0d83eded61e02878de885da4f1776d0239fd6cd9d7b7fa3c6e5eae29d8a