[INFO] cloning repository https://github.com/tomwhoiscontrary/isots
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tomwhoiscontrary/isots" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomwhoiscontrary%2Fisots", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomwhoiscontrary%2Fisots'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 646f593552e1cbb620bc2c92c04e116d2a218e42
[INFO] testing tomwhoiscontrary/isots against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftomwhoiscontrary%2Fisots" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tomwhoiscontrary/isots on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-14/source/rust-toolchain
[INFO] started tweaking git repo https://github.com/tomwhoiscontrary/isots
[INFO] finished tweaking git repo https://github.com/tomwhoiscontrary/isots
[INFO] tweaked toml for git repo https://github.com/tomwhoiscontrary/isots written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/tomwhoiscontrary/isots already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8d0154b0cfb2b13388a77795efe46f12369409e3f7a5ce790f28b5deaa0ec648
[INFO] running `Command { std: "docker" "start" "-a" "8d0154b0cfb2b13388a77795efe46f12369409e3f7a5ce790f28b5deaa0ec648", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d0154b0cfb2b13388a77795efe46f12369409e3f7a5ce790f28b5deaa0ec648", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d0154b0cfb2b13388a77795efe46f12369409e3f7a5ce790f28b5deaa0ec648", kill_on_drop: false }`
[INFO] [stdout] 8d0154b0cfb2b13388a77795efe46f12369409e3f7a5ce790f28b5deaa0ec648
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72682c135b69252bb069bb145813e659734ac9bfd1927e277b35e8223dc19627
[INFO] running `Command { std: "docker" "start" "-a" "72682c135b69252bb069bb145813e659734ac9bfd1927e277b35e8223dc19627", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling time v0.1.40
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling isots v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:149:9
[INFO] [stdout]     |
[INFO] [stdout] 149 | /         write!(out,
[INFO] [stdout] 150 | |                "{}-{:02}-{:02}T{:02}:{:02}:{:02}Z",
[INFO] [stdout] 151 | |                time.year(),
[INFO] [stdout] 152 | |                time.month(),
[INFO] [stdout] ...   |
[INFO] [stdout] 155 | |                time.minute(),
[INFO] [stdout] 156 | |                time.second());
[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]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:158:9
[INFO] [stdout]     |
[INFO] [stdout] 158 | /         write!(out,
[INFO] [stdout] 159 | |                "{}-{:02}-{:02}T{:02}:{:02}:{:02}.{:0width$}Z",
[INFO] [stdout] 160 | |                time.year(),
[INFO] [stdout] 161 | |                time.month(),
[INFO] [stdout] ...   |
[INFO] [stdout] 166 | |                time.nanosecond(),
[INFO] [stdout] 167 | |                width = fractional_seconds_digits);
[INFO] [stdout]     | |_________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.81s
[INFO] running `Command { std: "docker" "inspect" "72682c135b69252bb069bb145813e659734ac9bfd1927e277b35e8223dc19627", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72682c135b69252bb069bb145813e659734ac9bfd1927e277b35e8223dc19627", kill_on_drop: false }`
[INFO] [stdout] 72682c135b69252bb069bb145813e659734ac9bfd1927e277b35e8223dc19627
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6b6d551633b38be384c229e4988b066b02260e967085f35a8c46237eb94110b
[INFO] running `Command { std: "docker" "start" "-a" "e6b6d551633b38be384c229e4988b066b02260e967085f35a8c46237eb94110b", kill_on_drop: false }`
[INFO] [stderr]    Compiling isots v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:149:9
[INFO] [stdout]     |
[INFO] [stdout] 149 | /         write!(out,
[INFO] [stdout] 150 | |                "{}-{:02}-{:02}T{:02}:{:02}:{:02}Z",
[INFO] [stdout] 151 | |                time.year(),
[INFO] [stdout] 152 | |                time.month(),
[INFO] [stdout] ...   |
[INFO] [stdout] 155 | |                time.minute(),
[INFO] [stdout] 156 | |                time.second());
[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]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:158:9
[INFO] [stdout]     |
[INFO] [stdout] 158 | /         write!(out,
[INFO] [stdout] 159 | |                "{}-{:02}-{:02}T{:02}:{:02}:{:02}.{:0width$}Z",
[INFO] [stdout] 160 | |                time.year(),
[INFO] [stdout] 161 | |                time.month(),
[INFO] [stdout] ...   |
[INFO] [stdout] 166 | |                time.nanosecond(),
[INFO] [stdout] 167 | |                width = fractional_seconds_digits);
[INFO] [stdout]     | |_________________________________________________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.40s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/isots-478ab994bfa8b2fa)
[INFO] running `Command { std: "docker" "inspect" "e6b6d551633b38be384c229e4988b066b02260e967085f35a8c46237eb94110b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6b6d551633b38be384c229e4988b066b02260e967085f35a8c46237eb94110b", kill_on_drop: false }`
[INFO] [stdout] e6b6d551633b38be384c229e4988b066b02260e967085f35a8c46237eb94110b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8fd4174f08310aad242d95cd079a903e820542b7c8f42d0e3583f9a3d1f92082
[INFO] running `Command { std: "docker" "start" "-a" "8fd4174f08310aad242d95cd079a903e820542b7c8f42d0e3583f9a3d1f92082", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/main.rs:149:9
[INFO] [stderr]     |
[INFO] [stderr] 149 | /         write!(out,
[INFO] [stderr] 150 | |                "{}-{:02}-{:02}T{:02}:{:02}:{:02}Z",
[INFO] [stderr] 151 | |                time.year(),
[INFO] [stderr] 152 | |                time.month(),
[INFO] [stderr] ...   |
[INFO] [stderr] 155 | |                time.minute(),
[INFO] [stderr] 156 | |                time.second());
[INFO] [stderr]     | |_____________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/main.rs:158:9
[INFO] [stderr]     |
[INFO] [stderr] 158 | /         write!(out,
[INFO] [stderr] 159 | |                "{}-{:02}-{:02}T{:02}:{:02}:{:02}.{:0width$}Z",
[INFO] [stderr] 160 | |                time.year(),
[INFO] [stderr] 161 | |                time.month(),
[INFO] [stderr] ...   |
[INFO] [stderr] 166 | |                time.nanosecond(),
[INFO] [stderr] 167 | |                width = fractional_seconds_digits);
[INFO] [stderr]     | |_________________________________________________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `isots` (bin "isots" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.24s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/isots-478ab994bfa8b2fa)
[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" "8fd4174f08310aad242d95cd079a903e820542b7c8f42d0e3583f9a3d1f92082", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fd4174f08310aad242d95cd079a903e820542b7c8f42d0e3583f9a3d1f92082", kill_on_drop: false }`
[INFO] [stdout] 8fd4174f08310aad242d95cd079a903e820542b7c8f42d0e3583f9a3d1f92082