[INFO] fetching crate alter-ego 0.3.0...
[INFO] testing alter-ego-0.3.0 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate alter-ego 0.3.0 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate alter-ego 0.3.0
[INFO] finished tweaking crates.io crate alter-ego 0.3.0
[INFO] tweaked toml for crates.io crate alter-ego 0.3.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate alter-ego 0.3.0 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate alter-ego 0.3.0 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded which v3.1.0
[INFO] [stderr]   Downloaded hermit-abi v0.1.8
[INFO] [stderr]   Downloaded simple-error v0.2.1
[INFO] [stderr]   Downloaded users v0.9.1
[INFO] [stderr]   Downloaded libc v0.2.67
[INFO] [stderr]   Downloaded acl-sys v1.2.0
[INFO] [stderr]   Downloaded posix-acl v0.3.0
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e6dae725912915608c0e6a0941140f3e5a8bc3cb04511c1d5d8dae2c42e71d89
[INFO] running `Command { std: "docker" "start" "-a" "e6dae725912915608c0e6a0941140f3e5a8bc3cb04511c1d5d8dae2c42e71d89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6dae725912915608c0e6a0941140f3e5a8bc3cb04511c1d5d8dae2c42e71d89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6dae725912915608c0e6a0941140f3e5a8bc3cb04511c1d5d8dae2c42e71d89", kill_on_drop: false }`
[INFO] [stdout] e6dae725912915608c0e6a0941140f3e5a8bc3cb04511c1d5d8dae2c42e71d89
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ac0dee58dfd49158e199f98d0794ef681bb0644263a9f4bdddff69e26f5a301a
[INFO] running `Command { std: "docker" "start" "-a" "ac0dee58dfd49158e199f98d0794ef681bb0644263a9f4bdddff69e26f5a301a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling simple-error v0.2.1
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling acl-sys v1.2.0
[INFO] [stderr]    Compiling users v0.9.1
[INFO] [stderr]    Compiling which v3.1.0
[INFO] [stderr]    Compiling posix-acl v0.3.0
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling alter-ego v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `exec` that must be used
[INFO] [stdout]    --> src/main.rs:365:5
[INFO] [stdout]     |
[INFO] [stdout] 365 |     Command::new("sudo").args(args).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] 365 |     let _ = Command::new("sudo").args(args).exec();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `exec` that must be used
[INFO] [stdout]    --> src/main.rs:395:5
[INFO] [stdout]     |
[INFO] [stdout] 395 |     Command::new("machinectl").args(args).exec();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 395 |     let _ = Command::new("machinectl").args(args).exec();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.17s
[INFO] running `Command { std: "docker" "inspect" "ac0dee58dfd49158e199f98d0794ef681bb0644263a9f4bdddff69e26f5a301a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac0dee58dfd49158e199f98d0794ef681bb0644263a9f4bdddff69e26f5a301a", kill_on_drop: false }`
[INFO] [stdout] ac0dee58dfd49158e199f98d0794ef681bb0644263a9f4bdddff69e26f5a301a
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9f38156439eb2dff2d9f85afb421712ef2ead18241800bb7a5e2ba47153fb66d
[INFO] running `Command { std: "docker" "start" "-a" "9f38156439eb2dff2d9f85afb421712ef2ead18241800bb7a5e2ba47153fb66d", kill_on_drop: false }`
[INFO] [stderr]    Compiling alter-ego v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `exec` that must be used
[INFO] [stdout]    --> src/main.rs:365:5
[INFO] [stdout]     |
[INFO] [stdout] 365 |     Command::new("sudo").args(args).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] 365 |     let _ = Command::new("sudo").args(args).exec();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `exec` that must be used
[INFO] [stdout]    --> src/main.rs:395:5
[INFO] [stdout]     |
[INFO] [stdout] 395 |     Command::new("machinectl").args(args).exec();
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 395 |     let _ = Command::new("machinectl").args(args).exec();
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.81s
[INFO] running `Command { std: "docker" "inspect" "9f38156439eb2dff2d9f85afb421712ef2ead18241800bb7a5e2ba47153fb66d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f38156439eb2dff2d9f85afb421712ef2ead18241800bb7a5e2ba47153fb66d", kill_on_drop: false }`
[INFO] [stdout] 9f38156439eb2dff2d9f85afb421712ef2ead18241800bb7a5e2ba47153fb66d
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5b262416c3386225251b06e3f30598337b31d9f37deff90efc4baa8b9a785ecc
[INFO] running `Command { std: "docker" "start" "-a" "5b262416c3386225251b06e3f30598337b31d9f37deff90efc4baa8b9a785ecc", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `exec` that must be used
[INFO] [stderr]    --> src/main.rs:365:5
[INFO] [stderr]     |
[INFO] [stderr] 365 |     Command::new("sudo").args(args).exec();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 365 |     let _ = Command::new("sudo").args(args).exec();
[INFO] [stderr]     |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `exec` that must be used
[INFO] [stderr]    --> src/main.rs:395:5
[INFO] [stderr]     |
[INFO] [stderr] 395 |     Command::new("machinectl").args(args).exec();
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 395 |     let _ = Command::new("machinectl").args(args).exec();
[INFO] [stderr]     |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `alter-ego` (bin "alter-ego" test) generated 2 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/alter_ego-c5fa610951981b56)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::wayland_socket ... ok
[INFO] [stdout] test tests::test_parse_args ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5b262416c3386225251b06e3f30598337b31d9f37deff90efc4baa8b9a785ecc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b262416c3386225251b06e3f30598337b31d9f37deff90efc4baa8b9a785ecc", kill_on_drop: false }`
[INFO] [stdout] 5b262416c3386225251b06e3f30598337b31d9f37deff90efc4baa8b9a785ecc