[INFO] cloning repository https://github.com/zkValidator44/pba-qualifier-exam
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zkValidator44/pba-qualifier-exam" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FzkValidator44%2Fpba-qualifier-exam", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FzkValidator44%2Fpba-qualifier-exam'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 13f55a2e4a327ce8c10a00155ee3e1c3cd6e3033
[INFO] checking zkValidator44/pba-qualifier-exam against try#93086cfebfccb79083c59d0d3b2052944bba643c for pr-146440-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FzkValidator44%2Fpba-qualifier-exam" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/zkValidator44/pba-qualifier-exam
[INFO] finished tweaking git repo https://github.com/zkValidator44/pba-qualifier-exam
[INFO] tweaked toml for git repo https://github.com/zkValidator44/pba-qualifier-exam written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/zkValidator44/pba-qualifier-exam on toolchain 93086cfebfccb79083c59d0d3b2052944bba643c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/zkValidator44/pba-qualifier-exam 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" "+93086cfebfccb79083c59d0d3b2052944bba643c" "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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1632b559ee06d44d09b4a19e54795d9a9a3c40176c5fdc73a97cec74b04156c2
[INFO] running `Command { std: "docker" "start" "-a" "1632b559ee06d44d09b4a19e54795d9a9a3c40176c5fdc73a97cec74b04156c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1632b559ee06d44d09b4a19e54795d9a9a3c40176c5fdc73a97cec74b04156c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1632b559ee06d44d09b4a19e54795d9a9a3c40176c5fdc73a97cec74b04156c2", kill_on_drop: false }`
[INFO] [stdout] 1632b559ee06d44d09b4a19e54795d9a9a3c40176c5fdc73a97cec74b04156c2
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+93086cfebfccb79083c59d0d3b2052944bba643c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 035c7042a7fd13e3c5de67bef3d529f49c365314a1ab66e2b1916a472ebcaedf
[INFO] running `Command { std: "docker" "start" "-a" "035c7042a7fd13e3c5de67bef3d529f49c365314a1ab66e2b1916a472ebcaedf", kill_on_drop: false }`
[INFO] [stderr]     Checking pba-qualifier-exam v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: struct `Named` is never constructed
[INFO] [stdout]   --> src/m_builder.rs:91:12
[INFO] [stdout]    |
[INFO] [stdout] 91 | pub struct Named {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `Identified` is never constructed
[INFO] [stdout]   --> src/m_builder.rs:98:12
[INFO] [stdout]    |
[INFO] [stdout] 98 | pub struct Identified {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pba-qualifier-exam` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: struct `Named` is never constructed
[INFO] [stdout]   --> src/m_builder.rs:91:12
[INFO] [stdout]    |
[INFO] [stdout] 91 | pub struct Named {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout]    = note: `#[deny(unused_unconstructable_pub_structs)]` (part of `#[deny(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: struct `Identified` is never constructed
[INFO] [stdout]   --> src/m_builder.rs:98:12
[INFO] [stdout]    |
[INFO] [stdout] 98 | pub struct Identified {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `pub` struct has private fields, no public constructor, and is not otherwise reachable through the external API, so consider providing a public constructor or removing it
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pba-qualifier-exam` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "035c7042a7fd13e3c5de67bef3d529f49c365314a1ab66e2b1916a472ebcaedf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "035c7042a7fd13e3c5de67bef3d529f49c365314a1ab66e2b1916a472ebcaedf", kill_on_drop: false }`
[INFO] [stdout] 035c7042a7fd13e3c5de67bef3d529f49c365314a1ab66e2b1916a472ebcaedf