[INFO] cloning repository https://github.com/j-dong/ucalc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/j-dong/ucalc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fj-dong%2Fucalc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fj-dong%2Fucalc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 66834300de774127304730c405360a648cf1141d
[INFO] checking j-dong/ucalc against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fj-dong%2Fucalc" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/j-dong/ucalc on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/j-dong/ucalc
[INFO] finished tweaking git repo https://github.com/j-dong/ucalc
[INFO] tweaked toml for git repo https://github.com/j-dong/ucalc written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/j-dong/ucalc already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e20c0a8b093f7940624e7f050999979fac8d130519b70ebb0dd8ba28a7670f98
[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" "e20c0a8b093f7940624e7f050999979fac8d130519b70ebb0dd8ba28a7670f98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e20c0a8b093f7940624e7f050999979fac8d130519b70ebb0dd8ba28a7670f98", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e20c0a8b093f7940624e7f050999979fac8d130519b70ebb0dd8ba28a7670f98", kill_on_drop: false }`
[INFO] [stdout] e20c0a8b093f7940624e7f050999979fac8d130519b70ebb0dd8ba28a7670f98
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--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] 43a7391c63acdd78e7a6f2e92c80c86ffb01ed5a842be7f4bf1b649f4d221fbb
[INFO] running `Command { std: "docker" "start" "-a" "43a7391c63acdd78e7a6f2e92c80c86ffb01ed5a842be7f4bf1b649f4d221fbb", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.11
[INFO] [stderr]    Compiling phf_shared v0.7.14
[INFO] [stderr]     Checking nom v1.2.2
[INFO] [stderr]     Checking phf v0.7.14
[INFO] [stderr]    Compiling rand v0.3.14
[INFO] [stderr]    Compiling phf_generator v0.7.14
[INFO] [stderr]    Compiling phf_macros v0.7.14
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/phf_macros-0.7.14/src/lib.rs:34:30
[INFO] [stdout]    |
[INFO] [stdout] 34 | #![feature(plugin_registrar, quote, rustc_private)]
[INFO] [stdout]    |                              ^^^^^ feature has been removed
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `syntax`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/phf_macros-0.7.14/src/lib.rs:36:1
[INFO] [stdout]    |
[INFO] [stdout] 36 | extern crate syntax;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0463, E0557.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0463`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `phf_macros` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "43a7391c63acdd78e7a6f2e92c80c86ffb01ed5a842be7f4bf1b649f4d221fbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43a7391c63acdd78e7a6f2e92c80c86ffb01ed5a842be7f4bf1b649f4d221fbb", kill_on_drop: false }`
[INFO] [stdout] 43a7391c63acdd78e7a6f2e92c80c86ffb01ed5a842be7f4bf1b649f4d221fbb