[INFO] fetching crate semantic-test-project 2.0.0...
[INFO] testing semantic-test-project-2.0.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate semantic-test-project 2.0.0 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate semantic-test-project 2.0.0 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 crates.io crate semantic-test-project 2.0.0
[INFO] finished tweaking crates.io crate semantic-test-project 2.0.0
[INFO] tweaked toml for crates.io crate semantic-test-project 2.0.0 written to /workspace/builds/worker-28/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-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 6ecb3ed1871602fdaa740ff1f17a6168ccb6717bc3f6ef6d3e2d1e4e1268559b
[INFO] running `Command { std: "docker" "start" "-a" "6ecb3ed1871602fdaa740ff1f17a6168ccb6717bc3f6ef6d3e2d1e4e1268559b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6ecb3ed1871602fdaa740ff1f17a6168ccb6717bc3f6ef6d3e2d1e4e1268559b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ecb3ed1871602fdaa740ff1f17a6168ccb6717bc3f6ef6d3e2d1e4e1268559b", kill_on_drop: false }`
[INFO] [stdout] 6ecb3ed1871602fdaa740ff1f17a6168ccb6717bc3f6ef6d3e2d1e4e1268559b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 314d7f150301ca20f016380613c20817150e69cf5d21c3a70cafee667c838c7c
[INFO] running `Command { std: "docker" "start" "-a" "314d7f150301ca20f016380613c20817150e69cf5d21c3a70cafee667c838c7c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling semantic-test-project v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.08s
[INFO] running `Command { std: "docker" "inspect" "314d7f150301ca20f016380613c20817150e69cf5d21c3a70cafee667c838c7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "314d7f150301ca20f016380613c20817150e69cf5d21c3a70cafee667c838c7c", kill_on_drop: false }`
[INFO] [stdout] 314d7f150301ca20f016380613c20817150e69cf5d21c3a70cafee667c838c7c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 650dcc1679d906fd8adb9d328a32cbb7280e1920bbaf290d8948216f145dde91
[INFO] running `Command { std: "docker" "start" "-a" "650dcc1679d906fd8adb9d328a32cbb7280e1920bbaf290d8948216f145dde91", kill_on_drop: false }`
[INFO] [stderr]    Compiling semantic-test-project v2.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0428]: the name `foo` is defined multiple times
[INFO] [stdout]   --> src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 3  | pub fn foo() {
[INFO] [stdout]    | ------------ previous definition of the value `foo` here
[INFO] [stdout] ...
[INFO] [stdout] 17 | pub fn foo() {
[INFO] [stdout]    | ^^^^^^^^^^^^ `foo` redefined here
[INFO] [stdout]    |
[INFO] [stdout]    = note: `foo` must be defined only once in the value namespace of this module
[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 E0428`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `semantic-test-project` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "650dcc1679d906fd8adb9d328a32cbb7280e1920bbaf290d8948216f145dde91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "650dcc1679d906fd8adb9d328a32cbb7280e1920bbaf290d8948216f145dde91", kill_on_drop: false }`
[INFO] [stdout] 650dcc1679d906fd8adb9d328a32cbb7280e1920bbaf290d8948216f145dde91