[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] testing j-dong/ucalc against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fj-dong%2Fucalc" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/j-dong/ucalc on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-0/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" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nom v1.2.2
[INFO] [stderr]   Downloaded phf v0.7.14
[INFO] [stderr]   Downloaded phf_macros v0.7.14
[INFO] [stderr]   Downloaded phf_generator v0.7.14
[INFO] [stderr]   Downloaded phf_shared v0.7.14
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 205e0c68c59861966e7cc551ab4e5623fc5ec3bdcd5b3951be615a6a795d1267
[INFO] running `Command { std: "docker" "start" "-a" "205e0c68c59861966e7cc551ab4e5623fc5ec3bdcd5b3951be615a6a795d1267", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "205e0c68c59861966e7cc551ab4e5623fc5ec3bdcd5b3951be615a6a795d1267", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "205e0c68c59861966e7cc551ab4e5623fc5ec3bdcd5b3951be615a6a795d1267", kill_on_drop: false }`
[INFO] [stdout] 205e0c68c59861966e7cc551ab4e5623fc5ec3bdcd5b3951be615a6a795d1267
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ab99bc9b8ee6f932553337a7fd4869899e522c6391ac119149cba86ae446776f
[INFO] running `Command { std: "docker" "start" "-a" "ab99bc9b8ee6f932553337a7fd4869899e522c6391ac119149cba86ae446776f", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.11
[INFO] [stderr]    Compiling phf_shared v0.7.14
[INFO] [stderr]    Compiling nom v1.2.2
[INFO] [stderr]    Compiling 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" "ab99bc9b8ee6f932553337a7fd4869899e522c6391ac119149cba86ae446776f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab99bc9b8ee6f932553337a7fd4869899e522c6391ac119149cba86ae446776f", kill_on_drop: false }`
[INFO] [stdout] ab99bc9b8ee6f932553337a7fd4869899e522c6391ac119149cba86ae446776f