[INFO] fetching crate semantic-test-project 2.0.0...
[INFO] testing semantic-test-project-2.0.0 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate semantic-test-project 2.0.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate semantic-test-project 2.0.0 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", 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-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 01efae67fd4dc800440c100e02360270ecdc2eaa80955c8f2269284dc46d3bd7
[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" "01efae67fd4dc800440c100e02360270ecdc2eaa80955c8f2269284dc46d3bd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "01efae67fd4dc800440c100e02360270ecdc2eaa80955c8f2269284dc46d3bd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01efae67fd4dc800440c100e02360270ecdc2eaa80955c8f2269284dc46d3bd7", kill_on_drop: false }`
[INFO] [stdout] 01efae67fd4dc800440c100e02360270ecdc2eaa80955c8f2269284dc46d3bd7
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 57abd3154afff6901633a6152886d6083545c7183e3bea7669b4df8528f314a1
[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" "57abd3154afff6901633a6152886d6083545c7183e3bea7669b4df8528f314a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling semantic-test-project v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `Command { std: "docker" "inspect" "57abd3154afff6901633a6152886d6083545c7183e3bea7669b4df8528f314a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57abd3154afff6901633a6152886d6083545c7183e3bea7669b4df8528f314a1", kill_on_drop: false }`
[INFO] [stdout] 57abd3154afff6901633a6152886d6083545c7183e3bea7669b4df8528f314a1
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e17a77310d7430f8b300b368e16be66965c42a20ae21203ca86e6bf754172eb
[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" "0e17a77310d7430f8b300b368e16be66965c42a20ae21203ca86e6bf754172eb", 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`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "0e17a77310d7430f8b300b368e16be66965c42a20ae21203ca86e6bf754172eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e17a77310d7430f8b300b368e16be66965c42a20ae21203ca86e6bf754172eb", kill_on_drop: false }`
[INFO] [stdout] 0e17a77310d7430f8b300b368e16be66965c42a20ae21203ca86e6bf754172eb