[INFO] cloning repository https://github.com/indiscipline/zrtstr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/indiscipline/zrtstr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Findiscipline%2Fzrtstr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Findiscipline%2Fzrtstr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c4af6306cce0f71d84c2ea18ec9538779293ef81
[INFO] testing indiscipline/zrtstr against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Findiscipline%2Fzrtstr" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/indiscipline/zrtstr on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/indiscipline/zrtstr
[INFO] finished tweaking git repo https://github.com/indiscipline/zrtstr
[INFO] tweaked toml for git repo https://github.com/indiscipline/zrtstr written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/indiscipline/zrtstr already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", 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] 8b9bcf981740b46cd7f5ecec809ffe3ad8910a1ab530824f5c0510c4bfc208bd
[INFO] running `Command { std: "docker" "start" "-a" "8b9bcf981740b46cd7f5ecec809ffe3ad8910a1ab530824f5c0510c4bfc208bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b9bcf981740b46cd7f5ecec809ffe3ad8910a1ab530824f5c0510c4bfc208bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b9bcf981740b46cd7f5ecec809ffe3ad8910a1ab530824f5c0510c4bfc208bd", kill_on_drop: false }`
[INFO] [stdout] 8b9bcf981740b46cd7f5ecec809ffe3ad8910a1ab530824f5c0510c4bfc208bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ccf5f081f1bd2699ba1168552f2e19ce107c872215c10834729c946c232f27f
[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" "2ccf5f081f1bd2699ba1168552f2e19ce107c872215c10834729c946c232f27f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.14
[INFO] [stderr]    Compiling vec_map v0.6.0
[INFO] [stderr]    Compiling bitflags v0.7.0
[INFO] [stderr]    Compiling hound v2.0.0
[INFO] [stderr]    Compiling itertools v0.4.16
[INFO] [stderr]    Compiling clap v2.10.0
[INFO] [stderr]    Compiling time v0.1.35
[INFO] [stderr]    Compiling pbr v0.2.1 (https://github.com/a8m/pb.git#a1bf8ce2)
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/git/checkouts/pb-06f1c94bfc11587f/a1bf8ce/src/pb.rs:334:68
[INFO] [stdout]     |
[INFO] [stdout] 334 | ...                   base = base + repeat!(self.bar_current.as_ref(), curr_count - 1) +
[INFO] [stdout]     |                                             -----------------^^^^^^--
[INFO] [stdout]     |                                             |                |
[INFO] [stdout]     |                                             |                cannot infer type for struct `std::string::String`
[INFO] [stdout]     |                                             this method call resolves to `&T`
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `std::string::String: std::convert::AsRef<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pbr`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2ccf5f081f1bd2699ba1168552f2e19ce107c872215c10834729c946c232f27f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ccf5f081f1bd2699ba1168552f2e19ce107c872215c10834729c946c232f27f", kill_on_drop: false }`
[INFO] [stdout] 2ccf5f081f1bd2699ba1168552f2e19ce107c872215c10834729c946c232f27f