[INFO] cloning repository https://github.com/Kodex-blockchain-academy/kodex-blockchain-academy-classroom-advanced-rust-advanced_rust_assignment
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Kodex-blockchain-academy/kodex-blockchain-academy-classroom-advanced-rust-advanced_rust_assignment" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKodex-blockchain-academy%2Fkodex-blockchain-academy-classroom-advanced-rust-advanced_rust_assignment", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKodex-blockchain-academy%2Fkodex-blockchain-academy-classroom-advanced-rust-advanced_rust_assignment'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7e879f1a428e99f7ac9192ce9a0d162b1a4072a5
[INFO] checking Kodex-blockchain-academy/kodex-blockchain-academy-classroom-advanced-rust-advanced_rust_assignment against try#802c9b5f98c16ec9d24cdfd517f740f1f3df0e29 for pr-137728
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKodex-blockchain-academy%2Fkodex-blockchain-academy-classroom-advanced-rust-advanced_rust_assignment" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Kodex-blockchain-academy/kodex-blockchain-academy-classroom-advanced-rust-advanced_rust_assignment on toolchain 802c9b5f98c16ec9d24cdfd517f740f1f3df0e29
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+802c9b5f98c16ec9d24cdfd517f740f1f3df0e29" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Kodex-blockchain-academy/kodex-blockchain-academy-classroom-advanced-rust-advanced_rust_assignment
[INFO] finished tweaking git repo https://github.com/Kodex-blockchain-academy/kodex-blockchain-academy-classroom-advanced-rust-advanced_rust_assignment
[INFO] tweaked toml for git repo https://github.com/Kodex-blockchain-academy/kodex-blockchain-academy-classroom-advanced-rust-advanced_rust_assignment written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Kodex-blockchain-academy/kodex-blockchain-academy-classroom-advanced-rust-advanced_rust_assignment 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" "+802c9b5f98c16ec9d24cdfd517f740f1f3df0e29" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking Kodex-blockchain-academy/kodex-blockchain-academy-classroom-advanced-rust-advanced_rust_assignment against try#802c9b5f98c16ec9d24cdfd517f740f1f3df0e29 for pr-137728
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKodex-blockchain-academy%2Fkodex-blockchain-academy-classroom-advanced-rust-advanced_rust_assignment" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Kodex-blockchain-academy/kodex-blockchain-academy-classroom-advanced-rust-advanced_rust_assignment on toolchain 802c9b5f98c16ec9d24cdfd517f740f1f3df0e29
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+802c9b5f98c16ec9d24cdfd517f740f1f3df0e29" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Kodex-blockchain-academy/kodex-blockchain-academy-classroom-advanced-rust-advanced_rust_assignment
[INFO] finished tweaking git repo https://github.com/Kodex-blockchain-academy/kodex-blockchain-academy-classroom-advanced-rust-advanced_rust_assignment
[INFO] tweaked toml for git repo https://github.com/Kodex-blockchain-academy/kodex-blockchain-academy-classroom-advanced-rust-advanced_rust_assignment written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Kodex-blockchain-academy/kodex-blockchain-academy-classroom-advanced-rust-advanced_rust_assignment 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" "+802c9b5f98c16ec9d24cdfd517f740f1f3df0e29" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+802c9b5f98c16ec9d24cdfd517f740f1f3df0e29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e2b7f20b2e345c02b73e00d9de1411d3c27009f26d079ee7155b1fbf4efa5639
[INFO] running `Command { std: "docker" "start" "-a" "e2b7f20b2e345c02b73e00d9de1411d3c27009f26d079ee7155b1fbf4efa5639", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2b7f20b2e345c02b73e00d9de1411d3c27009f26d079ee7155b1fbf4efa5639", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2b7f20b2e345c02b73e00d9de1411d3c27009f26d079ee7155b1fbf4efa5639", kill_on_drop: false }`
[INFO] [stdout] e2b7f20b2e345c02b73e00d9de1411d3c27009f26d079ee7155b1fbf4efa5639
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+802c9b5f98c16ec9d24cdfd517f740f1f3df0e29" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 35c5c00c264fadb9fe42313f80a829b2401a0d73aa705df70879b01d390569bf
[INFO] running `Command { std: "docker" "start" "-a" "35c5c00c264fadb9fe42313f80a829b2401a0d73aa705df70879b01d390569bf", kill_on_drop: false }`
[INFO] [stderr]     Checking advanced_rust_assignment v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] running `Command { std: "docker" "inspect" "35c5c00c264fadb9fe42313f80a829b2401a0d73aa705df70879b01d390569bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35c5c00c264fadb9fe42313f80a829b2401a0d73aa705df70879b01d390569bf", kill_on_drop: false }`
[INFO] [stdout] 35c5c00c264fadb9fe42313f80a829b2401a0d73aa705df70879b01d390569bf