[INFO] cloning repository https://github.com/mrafalo/fastcdrgen
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mrafalo/fastcdrgen" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrafalo%2Ffastcdrgen", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrafalo%2Ffastcdrgen'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c8a305ea450f020746b591a42969e43780203527
[INFO] checking mrafalo/fastcdrgen against try#724e78794d2cf06eef820a24c9a4608d63435e1d for pr-149145
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrafalo%2Ffastcdrgen" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mrafalo/fastcdrgen
[INFO] finished tweaking git repo https://github.com/mrafalo/fastcdrgen
[INFO] tweaked toml for git repo https://github.com/mrafalo/fastcdrgen written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mrafalo/fastcdrgen on toolchain 724e78794d2cf06eef820a24c9a4608d63435e1d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+724e78794d2cf06eef820a24c9a4608d63435e1d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mrafalo/fastcdrgen already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+724e78794d2cf06eef820a24c9a4608d63435e1d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+724e78794d2cf06eef820a24c9a4608d63435e1d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d502e037a4a1aab96fd6ca4e3c87c64ac536ef87703453b86c23a72b61e9a3f1
[INFO] running `Command { std: "docker" "start" "-a" "d502e037a4a1aab96fd6ca4e3c87c64ac536ef87703453b86c23a72b61e9a3f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d502e037a4a1aab96fd6ca4e3c87c64ac536ef87703453b86c23a72b61e9a3f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d502e037a4a1aab96fd6ca4e3c87c64ac536ef87703453b86c23a72b61e9a3f1", kill_on_drop: false }`
[INFO] [stdout] d502e037a4a1aab96fd6ca4e3c87c64ac536ef87703453b86c23a72b61e9a3f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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" "RUSTDOCFLAGS=--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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+724e78794d2cf06eef820a24c9a4608d63435e1d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1f68e2a0418d5a1e7344869a3e57407a4ded2992aac2b67eb444ac59c636074d
[INFO] running `Command { std: "docker" "start" "-a" "1f68e2a0418d5a1e7344869a3e57407a4ded2992aac2b67eb444ac59c636074d", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.203
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[INFO] [stdout] error[E0659]: `DataType` is ambiguous
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/polars-core-0.48.1/src/datatypes/dtype.rs:373:13
[INFO] [stdout]     |
[INFO] [stdout] 373 |         use DataType as D;
[INFO] [stdout]     |             ^^^^^^^^ ambiguous name
[INFO] [stdout]     |
[INFO] [stdout]     = note: ambiguous because of a conflict between a name from a glob import and a macro-expanded name in the same module during import or macro resolution
[INFO] [stdout] note: `DataType` could refer to the enum defined here
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/polars-core-0.48.1/src/datatypes/dtype.rs:93:1
[INFO] [stdout]     |
[INFO] [stdout]  93 | / pub enum DataType {
[INFO] [stdout]  94 | |     Boolean,
[INFO] [stdout]  95 | |     UInt8,
[INFO] [stdout]  96 | |     UInt16,
[INFO] [stdout] ...   |
[INFO] [stdout] 145 | |     Unknown(UnknownKind),
[INFO] [stdout] 146 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] note: `DataType` could also refer to the enum imported here
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/polars-core-0.48.1/src/datatypes/dtype.rs:12:5
[INFO] [stdout]     |
[INFO] [stdout]  12 | use super::*;
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     = help: consider adding an explicit import of `DataType` to disambiguate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0659]: `DataType` is ambiguous
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/polars-core-0.48.1/src/datatypes/dtype.rs:593:13
[INFO] [stdout]     |
[INFO] [stdout] 593 |         use DataType as D;
[INFO] [stdout]     |             ^^^^^^^^ ambiguous name
[INFO] [stdout]     |
[INFO] [stdout]     = note: ambiguous because of a conflict between a name from a glob import and a macro-expanded name in the same module during import or macro resolution
[INFO] [stdout] note: `DataType` could refer to the enum defined here
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/polars-core-0.48.1/src/datatypes/dtype.rs:93:1
[INFO] [stdout]     |
[INFO] [stdout]  93 | / pub enum DataType {
[INFO] [stdout]  94 | |     Boolean,
[INFO] [stdout]  95 | |     UInt8,
[INFO] [stdout]  96 | |     UInt16,
[INFO] [stdout] ...   |
[INFO] [stdout] 145 | |     Unknown(UnknownKind),
[INFO] [stdout] 146 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout] note: `DataType` could also refer to the enum imported here
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/polars-core-0.48.1/src/datatypes/dtype.rs:12:5
[INFO] [stdout]     |
[INFO] [stdout]  12 | use super::*;
[INFO] [stdout]     |     ^^^^^^^^
[INFO] [stdout]     = help: consider adding an explicit import of `DataType` to disambiguate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0659`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `polars-core` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "1f68e2a0418d5a1e7344869a3e57407a4ded2992aac2b67eb444ac59c636074d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f68e2a0418d5a1e7344869a3e57407a4ded2992aac2b67eb444ac59c636074d", kill_on_drop: false }`
[INFO] [stdout] 1f68e2a0418d5a1e7344869a3e57407a4ded2992aac2b67eb444ac59c636074d