[INFO] cloning repository https://github.com/willcrichton/rust-slicer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/willcrichton/rust-slicer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillcrichton%2Frust-slicer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillcrichton%2Frust-slicer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5ee2551edccde5b728d2f44142e3857f06862c48
[INFO] testing willcrichton/rust-slicer against try#722e1797249a965b6335aebd65d777f917e498f1 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwillcrichton%2Frust-slicer" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/willcrichton/rust-slicer on toolchain 722e1797249a965b6335aebd65d777f917e498f1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-8/source/rust-toolchain.toml
[INFO] started tweaking git repo https://github.com/willcrichton/rust-slicer
[INFO] finished tweaking git repo https://github.com/willcrichton/rust-slicer
[INFO] tweaked toml for git repo https://github.com/willcrichton/rust-slicer written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/willcrichton/rust-slicer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cargo_metadata v0.14.0
[INFO] [stderr]   Downloaded fluid-let v1.0.0
[INFO] [stderr]   Downloaded html-escape v0.2.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d5d5335a1ce815398cbd53b8a9d72204dd81f297463d974c53ae1b7bb8b99bbe
[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" "d5d5335a1ce815398cbd53b8a9d72204dd81f297463d974c53ae1b7bb8b99bbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d5d5335a1ce815398cbd53b8a9d72204dd81f297463d974c53ae1b7bb8b99bbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5d5335a1ce815398cbd53b8a9d72204dd81f297463d974c53ae1b7bb8b99bbe", kill_on_drop: false }`
[INFO] [stdout] d5d5335a1ce815398cbd53b8a9d72204dd81f297463d974c53ae1b7bb8b99bbe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+722e1797249a965b6335aebd65d777f917e498f1" "build" "--frozen" "--message-format=json", 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] ba1d76de2e906d249218082c7ee41fd3652e4a45e61e90e09a7e43e846b4b1bb
[INFO] running `Command { std: "docker" "start" "-a" "ba1d76de2e906d249218082c7ee41fd3652e4a45e61e90e09a7e43e846b4b1bb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling anyhow v1.0.42
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling utf8-width v0.1.5
[INFO] [stderr]    Compiling fluid-let v1.0.0
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling flowistry_ifc_traits v0.1.0 (/opt/rustwide/workdir/crates/flowistry_ifc_traits)
[INFO] [stderr]    Compiling intervaltree v0.2.6
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling html-escape v0.2.9
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling env_logger v0.9.0
[INFO] [stderr]    Compiling flowistry v0.3.19 (/opt/rustwide/workdir/crates/flowistry)
[INFO] [stdout] error[E0463]: can't find crate for `polonius_engine`
[INFO] [stdout]   --> crates/flowistry/src/lib.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | extern crate polonius_engine;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[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 E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `flowistry` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "ba1d76de2e906d249218082c7ee41fd3652e4a45e61e90e09a7e43e846b4b1bb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ba1d76de2e906d249218082c7ee41fd3652e4a45e61e90e09a7e43e846b4b1bb", kill_on_drop: false }`
[INFO] [stdout] ba1d76de2e906d249218082c7ee41fd3652e4a45e61e90e09a7e43e846b4b1bb