[INFO] cloning repository https://github.com/jcdyer/potpot
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jcdyer/potpot" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjcdyer%2Fpotpot", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjcdyer%2Fpotpot'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0f416741aaf9fbe951f51134b02db24a5df69782
[INFO] testing jcdyer/potpot against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjcdyer%2Fpotpot" "/workspace/builds/worker-18/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-18/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jcdyer/potpot 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/jcdyer/potpot
[INFO] finished tweaking git repo https://github.com/jcdyer/potpot
[INFO] tweaked toml for git repo https://github.com/jcdyer/potpot written to /workspace/builds/worker-18/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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] f9385a5b1d9edd350593c27bd2c74f6c47bd059fe8a9f974e16a9168fde20be3
[INFO] running `Command { std: "docker" "start" "-a" "f9385a5b1d9edd350593c27bd2c74f6c47bd059fe8a9f974e16a9168fde20be3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9385a5b1d9edd350593c27bd2c74f6c47bd059fe8a9f974e16a9168fde20be3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9385a5b1d9edd350593c27bd2c74f6c47bd059fe8a9f974e16a9168fde20be3", kill_on_drop: false }`
[INFO] [stdout] f9385a5b1d9edd350593c27bd2c74f6c47bd059fe8a9f974e16a9168fde20be3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-18/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] 8b0ff8f86c9e5d00c67415c3ab8ae502596abe0c7a5336a075ca6632aae519de
[INFO] running `Command { std: "docker" "start" "-a" "8b0ff8f86c9e5d00c67415c3ab8ae502596abe0c7a5336a075ca6632aae519de", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling anyhow v1.0.43
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling radium v0.3.0
[INFO] [stderr]    Compiling crc-catalog v1.1.1
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling crc v2.0.0
[INFO] [stderr]    Compiling bitvec v0.17.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling twox-hash v1.6.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]    Compiling thiserror v1.0.29
[INFO] [stderr]    Compiling potpot v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0603]: module `crc32` is private
[INFO] [stdout]   --> src/aligned.rs:1:10
[INFO] [stdout]    |
[INFO] [stdout] 1  | use crc::crc32;
[INFO] [stdout]    |          ^^^^^ private module
[INFO] [stdout]    |
[INFO] [stdout] note: the module `crc32` is defined here
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/crc-2.0.0/src/lib.rs:36:1
[INFO] [stdout]    |
[INFO] [stdout] 36 | mod crc32;
[INFO] [stdout]    | ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0603]: module `crc32` is private
[INFO] [stdout]    --> src/hashtable.rs:229:14
[INFO] [stdout]     |
[INFO] [stdout] 229 |     use crc::crc32;
[INFO] [stdout]     |              ^^^^^ private module
[INFO] [stdout]     |
[INFO] [stdout] note: the module `crc32` is defined here
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/crc-2.0.0/src/lib.rs:36:1
[INFO] [stdout]     |
[INFO] [stdout] 36  | mod crc32;
[INFO] [stdout]     | ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryFrom`
[INFO] [stdout]    --> src/hashtable.rs:224:19
[INFO] [stdout]     |
[INFO] [stdout] 224 |         convert::{TryFrom, TryInto},
[INFO] [stdout]     |                   ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0603`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `potpot` due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "8b0ff8f86c9e5d00c67415c3ab8ae502596abe0c7a5336a075ca6632aae519de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b0ff8f86c9e5d00c67415c3ab8ae502596abe0c7a5336a075ca6632aae519de", kill_on_drop: false }`
[INFO] [stdout] 8b0ff8f86c9e5d00c67415c3ab8ae502596abe0c7a5336a075ca6632aae519de