[INFO] fetching crate xan-log 1.0.1...
[INFO] checking xan-log-1.0.1 against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] extracting crate xan-log 1.0.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate xan-log 1.0.1
[INFO] finished tweaking crates.io crate xan-log 1.0.1
[INFO] tweaked toml for crates.io crate xan-log 1.0.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate xan-log 1.0.1 on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate xan-log 1.0.1 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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 20b7dbba834169bf9f5ff2125bed6fa22489d64077a95b535c40a7ef06313d1d
[INFO] running `Command { std: "docker" "start" "-a" "20b7dbba834169bf9f5ff2125bed6fa22489d64077a95b535c40a7ef06313d1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "20b7dbba834169bf9f5ff2125bed6fa22489d64077a95b535c40a7ef06313d1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20b7dbba834169bf9f5ff2125bed6fa22489d64077a95b535c40a7ef06313d1d", kill_on_drop: false }`
[INFO] [stdout] 20b7dbba834169bf9f5ff2125bed6fa22489d64077a95b535c40a7ef06313d1d
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 738fc95fad52d692843dcd14623dbb1d461b2ee6b353240914a19911f41afbfa
[INFO] running `Command { std: "docker" "start" "-a" "738fc95fad52d692843dcd14623dbb1d461b2ee6b353240914a19911f41afbfa", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling serde v1.0.192
[INFO] [stderr]    Compiling serde_json v1.0.108
[INFO] [stderr]     Checking iana-time-zone v0.1.58
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking chrono v0.4.31
[INFO] [stderr]     Checking xan-log v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0133]: call to unsafe function `set_var` is unsafe and requires unsafe block
[INFO] [stdout]   --> src/lib.rs:83:5
[INFO] [stdout]    |
[INFO] [stdout] 83 |     std::env::set_var("LOG_LEVEL", "TRACE");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ call to unsafe function
[INFO] [stdout]    |
[INFO] [stdout]    = note: consult the function's documentation for information on how to avoid undefined behavior
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0133`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `xan-log` (lib test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "738fc95fad52d692843dcd14623dbb1d461b2ee6b353240914a19911f41afbfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "738fc95fad52d692843dcd14623dbb1d461b2ee6b353240914a19911f41afbfa", kill_on_drop: false }`
[INFO] [stdout] 738fc95fad52d692843dcd14623dbb1d461b2ee6b353240914a19911f41afbfa