[INFO] cloning repository https://github.com/LukeMathWalker/tracing-min
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LukeMathWalker/tracing-min" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLukeMathWalker%2Ftracing-min", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLukeMathWalker%2Ftracing-min'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f83473c2ccddd3aa93d1eca56a869d6dac567afa
[INFO] checking LukeMathWalker/tracing-min against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLukeMathWalker%2Ftracing-min" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LukeMathWalker/tracing-min on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LukeMathWalker/tracing-min
[INFO] finished tweaking git repo https://github.com/LukeMathWalker/tracing-min
[INFO] tweaked toml for git repo https://github.com/LukeMathWalker/tracing-min written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/LukeMathWalker/tracing-min already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tracing-error v0.1.2
[INFO] [stderr]   Downloaded integer-encoding v1.1.5
[INFO] [stderr]   Downloaded thrift v0.13.0
[INFO] [stderr]   Downloaded opentelemetry-jaeger v0.5.0
[INFO] [stderr]   Downloaded cookie v0.13.3
[INFO] [stderr]   Downloaded tracing-opentelemetry v0.5.0
[INFO] [stderr]   Downloaded aho-corasick v0.7.12
[INFO] [stderr]   Downloaded opentelemetry v0.6.0
[INFO] [stderr]   Downloaded protobuf v2.15.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b065391c65740c12c4b7ff683b4c9c84dd1d0155aa3a636afc328afe8dc67e8a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b065391c65740c12c4b7ff683b4c9c84dd1d0155aa3a636afc328afe8dc67e8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b065391c65740c12c4b7ff683b4c9c84dd1d0155aa3a636afc328afe8dc67e8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b065391c65740c12c4b7ff683b4c9c84dd1d0155aa3a636afc328afe8dc67e8a", kill_on_drop: false }`
[INFO] [stdout] b065391c65740c12c4b7ff683b4c9c84dd1d0155aa3a636afc328afe8dc67e8a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 01bae287bd516dcc4b854f1dd3a4285ad7689160f49a1aa3aad98e2fb1ab2eb4
[INFO] running `Command { std: "docker" "start" "-a" "01bae287bd516dcc4b854f1dd3a4285ad7689160f49a1aa3aad98e2fb1ab2eb4", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling proc-macro-hack v0.5.16
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]     Checking futures-sink v0.3.5
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]    Compiling protobuf v2.15.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking base64 v0.12.2
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling standback v0.2.9
[INFO] [stderr]     Checking tracing-core v0.1.10
[INFO] [stderr]    Compiling time v0.2.16
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking sharded-slab v0.0.9
[INFO] [stderr]    Compiling ring v0.16.15
[INFO] [stderr]     Checking qstring v0.7.2
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]     Checking aho-corasick v0.7.12
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking tracing-log v0.1.1
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking num-integer v0.1.43
[INFO] [stderr]     Checking ordered-float v1.0.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking thrift v0.13.0
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking webpki v0.21.3
[INFO] [stderr]     Checking sct v0.6.0
[INFO] [stderr]     Checking webpki-roots v0.19.0
[INFO] [stderr]     Checking rustls v0.17.0
[INFO] [stderr]     Checking prometheus v0.7.0
[INFO] [stderr]     Checking serde_json v1.0.55
[INFO] [stderr]     Checking tracing-serde v0.1.1
[INFO] [stderr]     Checking tracing-subscriber v0.2.6
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.8
[INFO] [stderr]     Checking time-macros v0.1.0
[INFO] [stderr]     Checking tracing v0.1.15
[INFO] [stderr]     Checking cookie v0.13.3
[INFO] [stderr]     Checking tracing-error v0.1.2
[INFO] [stderr]     Checking ureq v1.2.0
[INFO] [stderr]     Checking pin-project v0.4.22
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking opentelemetry v0.6.0
[INFO] [stderr]     Checking tracing-opentelemetry v0.5.0
[INFO] [stderr]     Checking opentelemetry-jaeger v0.5.0
[INFO] [stderr]     Checking tracing-min v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 44s
[INFO] running `Command { std: "docker" "inspect" "01bae287bd516dcc4b854f1dd3a4285ad7689160f49a1aa3aad98e2fb1ab2eb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01bae287bd516dcc4b854f1dd3a4285ad7689160f49a1aa3aad98e2fb1ab2eb4", kill_on_drop: false }`
[INFO] [stdout] 01bae287bd516dcc4b854f1dd3a4285ad7689160f49a1aa3aad98e2fb1ab2eb4