[INFO] cloning repository https://github.com/davidbarsky/tracing-reproduction
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/davidbarsky/tracing-reproduction" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidbarsky%2Ftracing-reproduction", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidbarsky%2Ftracing-reproduction'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3663f47b17bf5c9f02a73fec6bf623ff562d35bd
[INFO] checking davidbarsky/tracing-reproduction against try#4a23c45c7893f1416456144e3883cc48ea91722e for pr-82322
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidbarsky%2Ftracing-reproduction" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/davidbarsky/tracing-reproduction on toolchain 4a23c45c7893f1416456144e3883cc48ea91722e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/davidbarsky/tracing-reproduction
[INFO] finished tweaking git repo https://github.com/davidbarsky/tracing-reproduction
[INFO] tweaked toml for git repo https://github.com/davidbarsky/tracing-reproduction written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/davidbarsky/tracing-reproduction already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] Downloading crates ...
[INFO] [stderr] Downloaded tracing-core v0.1.7
[INFO] [stderr] Downloaded tracing-attributes v0.1.5
[INFO] [stderr] Downloaded tracing v0.1.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9f797b144ebc3640c0934b880b27fb152a14a199f02f66d53806b63edb7f075
[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" "d9f797b144ebc3640c0934b880b27fb152a14a199f02f66d53806b63edb7f075", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9f797b144ebc3640c0934b880b27fb152a14a199f02f66d53806b63edb7f075", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9f797b144ebc3640c0934b880b27fb152a14a199f02f66d53806b63edb7f075", kill_on_drop: false }`
[INFO] [stdout] d9f797b144ebc3640c0934b880b27fb152a14a199f02f66d53806b63edb7f075
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4a23c45c7893f1416456144e3883cc48ea91722e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c7c547700b648069e137017c7049097dc889146b07a2e8de6d311a899b11b668
[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" "c7c547700b648069e137017c7049097dc889146b07a2e8de6d311a899b11b668", kill_on_drop: false }`
[INFO] [stderr] Compiling proc-macro2 v1.0.6
[INFO] [stderr] Compiling unicode-xid v0.2.0
[INFO] [stderr] Compiling syn v1.0.11
[INFO] [stderr] Checking spin v0.5.2
[INFO] [stderr] Checking cfg-if v0.1.10
[INFO] [stderr] Checking lazy_static v1.4.0
[INFO] [stderr] Checking tracing-core v0.1.7
[INFO] [stderr] Compiling quote v1.0.2
[INFO] [stderr] Compiling tracing-attributes v0.1.5
[INFO] [stderr] Checking tracing v0.1.10
[INFO] [stderr] Checking tracing-reproduction v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the trait bound `Option<&'a Id>: From