[INFO] cloning repository https://github.com/BuyMyMojo/what_is_the_deal_with_tracing
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/BuyMyMojo/what_is_the_deal_with_tracing" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBuyMyMojo%2Fwhat_is_the_deal_with_tracing", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBuyMyMojo%2Fwhat_is_the_deal_with_tracing'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0e3831c01f0f2178e1075c202c5a65a78db393c5
[INFO] testing BuyMyMojo/what_is_the_deal_with_tracing against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBuyMyMojo%2Fwhat_is_the_deal_with_tracing" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/BuyMyMojo/what_is_the_deal_with_tracing on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/BuyMyMojo/what_is_the_deal_with_tracing
[INFO] finished tweaking git repo https://github.com/BuyMyMojo/what_is_the_deal_with_tracing
[INFO] tweaked toml for git repo https://github.com/BuyMyMojo/what_is_the_deal_with_tracing written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/BuyMyMojo/what_is_the_deal_with_tracing already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing-appender v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6be3bb22eb9c1565463e2e280d5023180a7e11804c76ad57e265fc9396d7f91a
[INFO] running `Command { std: "docker" "start" "-a" "6be3bb22eb9c1565463e2e280d5023180a7e11804c76ad57e265fc9396d7f91a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6be3bb22eb9c1565463e2e280d5023180a7e11804c76ad57e265fc9396d7f91a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6be3bb22eb9c1565463e2e280d5023180a7e11804c76ad57e265fc9396d7f91a", kill_on_drop: false }`
[INFO] [stdout] 6be3bb22eb9c1565463e2e280d5023180a7e11804c76ad57e265fc9396d7f91a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 31e9ca4a40ec3a4973d5996b5095e80c937f2640bde8c07407485fe350ac11db
[INFO] running `Command { std: "docker" "start" "-a" "31e9ca4a40ec3a4973d5996b5095e80c937f2640bde8c07407485fe350ac11db", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling crossbeam-utils v0.8.7
[INFO] [stderr]    Compiling parking_lot_core v0.9.1
[INFO] [stderr]    Compiling once_cell v1.10.0
[INFO] [stderr]    Compiling num_threads v0.1.3
[INFO] [stderr]    Compiling tracing-core v0.1.22
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling sharded-slab v0.1.4
[INFO] [stderr]    Compiling lock_api v0.4.6
[INFO] [stderr]    Compiling thread_local v1.1.4
[INFO] [stderr]    Compiling tracing-log v0.1.2
[INFO] [stderr]    Compiling crossbeam-channel v0.5.2
[INFO] [stderr]    Compiling tracing-subscriber v0.3.9
[INFO] [stderr]    Compiling getrandom v0.2.5
[INFO] [stderr]    Compiling time v0.3.7
[INFO] [stderr]    Compiling socket2 v0.4.4
[INFO] [stderr]    Compiling signal-hook-registry v1.4.0
[INFO] [stderr]    Compiling num_cpus v1.13.1
[INFO] [stderr]    Compiling mio v0.8.0
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling parking_lot v0.12.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling tracing-appender v0.2.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.19
[INFO] [stderr]    Compiling tokio v1.17.0
[INFO] [stderr]    Compiling tracing v0.1.31
[INFO] [stderr]    Compiling what_is_the_deal_with_tracing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `info`
[INFO] [stdout]  --> src/main.rs:5:34
[INFO] [stdout]   |
[INFO] [stdout] 5 | use tracing::{Level, instrument, info, span, event};
[INFO] [stdout]   |                                  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `span`
[INFO] [stdout]   --> src/main.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let span = span!(Level::TRACE, "main func");
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_span`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.09s
[INFO] running `Command { std: "docker" "inspect" "31e9ca4a40ec3a4973d5996b5095e80c937f2640bde8c07407485fe350ac11db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31e9ca4a40ec3a4973d5996b5095e80c937f2640bde8c07407485fe350ac11db", kill_on_drop: false }`
[INFO] [stdout] 31e9ca4a40ec3a4973d5996b5095e80c937f2640bde8c07407485fe350ac11db
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 642f6e8fac7d259f3c77585bb0191a740c789fecb1ec5ec15dc4974b75282106
[INFO] running `Command { std: "docker" "start" "-a" "642f6e8fac7d259f3c77585bb0191a740c789fecb1ec5ec15dc4974b75282106", kill_on_drop: false }`
[INFO] [stderr]    Compiling what_is_the_deal_with_tracing v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `info`
[INFO] [stdout]  --> src/main.rs:5:34
[INFO] [stdout]   |
[INFO] [stdout] 5 | use tracing::{Level, instrument, info, span, event};
[INFO] [stdout]   |                                  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `span`
[INFO] [stdout]   --> src/main.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |     let span = span!(Level::TRACE, "main func");
[INFO] [stdout]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_span`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `Command { std: "docker" "inspect" "642f6e8fac7d259f3c77585bb0191a740c789fecb1ec5ec15dc4974b75282106", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "642f6e8fac7d259f3c77585bb0191a740c789fecb1ec5ec15dc4974b75282106", kill_on_drop: false }`
[INFO] [stdout] 642f6e8fac7d259f3c77585bb0191a740c789fecb1ec5ec15dc4974b75282106
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 86d0a1b00927106ce3f0c6411d02332fb14997dee575a5f6392c35c75be1ae4c
[INFO] running `Command { std: "docker" "start" "-a" "86d0a1b00927106ce3f0c6411d02332fb14997dee575a5f6392c35c75be1ae4c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `info`
[INFO] [stderr]  --> src/main.rs:5:34
[INFO] [stderr]   |
[INFO] [stderr] 5 | use tracing::{Level, instrument, info, span, event};
[INFO] [stderr]   |                                  ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]   --> src/main.rs:22:9
[INFO] [stderr]    |
[INFO] [stderr] 22 |     let span = span!(Level::TRACE, "main func");
[INFO] [stderr]    |         ^^^^ help: if this is intentional, prefix it with an underscore: `_span`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `what_is_the_deal_with_tracing` (bin "what_is_the_deal_with_tracing" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 18.65s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/what_is_the_deal_with_tracing-8a5f1cc93d246c7a)
[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" "86d0a1b00927106ce3f0c6411d02332fb14997dee575a5f6392c35c75be1ae4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86d0a1b00927106ce3f0c6411d02332fb14997dee575a5f6392c35c75be1ae4c", kill_on_drop: false }`
[INFO] [stdout] 86d0a1b00927106ce3f0c6411d02332fb14997dee575a5f6392c35c75be1ae4c