[INFO] fetching crate runner 0.4.0...
[INFO] testing runner-0.4.0 against 1.47.0 for beta-1.48-1
[INFO] extracting crate runner 0.4.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate runner 0.4.0 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate runner 0.4.0
[INFO] finished tweaking crates.io crate runner 0.4.0
[INFO] tweaked toml for crates.io crate runner 0.4.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "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" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5ebe95a95f46cbcfc729e356325c9ee3ff3e6f5226088e021d2fb5722a79ead4
[INFO] running `Command { std: "docker" "start" "-a" "5ebe95a95f46cbcfc729e356325c9ee3ff3e6f5226088e021d2fb5722a79ead4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5ebe95a95f46cbcfc729e356325c9ee3ff3e6f5226088e021d2fb5722a79ead4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ebe95a95f46cbcfc729e356325c9ee3ff3e6f5226088e021d2fb5722a79ead4", kill_on_drop: false }`
[INFO] [stdout] 5ebe95a95f46cbcfc729e356325c9ee3ff3e6f5226088e021d2fb5722a79ead4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bfff9256ff3b3d2d8a656c020e7029e73466fd989b0508623b7ff9f43434dcf6
[INFO] running `Command { std: "docker" "start" "-a" "bfff9256ff3b3d2d8a656c020e7029e73466fd989b0508623b7ff9f43434dcf6", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.117
[INFO] [stderr]    Compiling syn v1.0.44
[INFO] [stderr]    Compiling json v0.11.15
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling open v1.4.0
[INFO] [stderr]    Compiling easy-shortcuts v0.3.0
[INFO] [stderr]    Compiling lapp v0.4.0
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling isatty v0.1.9
[INFO] [stderr]    Compiling serde_derive v1.0.117
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling runner v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/crate_utils.rs:9:1
[INFO] [stdout]    |
[INFO] [stdout] 9  | / lazy_static! {
[INFO] [stdout] 10 | |     pub static ref RUSTUP_LIB: String = es::shell("rustc --print sysroot") + "/lib";
[INFO] [stdout] 11 | |     pub static ref UNSTABLE: bool = RUSTUP_LIB.find("nightly").is_some();
[INFO] [stdout] 12 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/crate_utils.rs:9:1
[INFO] [stdout]    |
[INFO] [stdout] 9  | / lazy_static! {
[INFO] [stdout] 10 | |     pub static ref RUSTUP_LIB: String = es::shell("rustc --print sysroot") + "/lib";
[INFO] [stdout] 11 | |     pub static ref UNSTABLE: bool = RUSTUP_LIB.find("nightly").is_some();
[INFO] [stdout] 12 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.25s
[INFO] running `Command { std: "docker" "inspect" "bfff9256ff3b3d2d8a656c020e7029e73466fd989b0508623b7ff9f43434dcf6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bfff9256ff3b3d2d8a656c020e7029e73466fd989b0508623b7ff9f43434dcf6", kill_on_drop: false }`
[INFO] [stdout] bfff9256ff3b3d2d8a656c020e7029e73466fd989b0508623b7ff9f43434dcf6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c011e512aaee684f36bc13bd2b3ef1b74e2ed38bbc743f981a48fa68aa3a9bc
[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" "2c011e512aaee684f36bc13bd2b3ef1b74e2ed38bbc743f981a48fa68aa3a9bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling runner v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: could not compile `runner`.
[INFO] [stdout] error: expected item, found keyword `let`
[INFO] [stdout]  --> examples/filetime.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | let metadata = fs::metadata("filetime.rs").unwrap();
[INFO] [stdout]   | ^^^ expected item
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: expected item, found keyword `let`
[INFO] [stdout]  --> examples/read.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | let code = fs::read_to_string("read.rs")?;
[INFO] [stdout]   | ^^^ expected item
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: expected item, found keyword `let`
[INFO] [stdout]  --> examples/regex.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | let re = Regex::new(r"^\d{4}-\d{2}-\d{2}$").unwrap();
[INFO] [stdout]   | ^^^ expected item
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: macro expansion ignores token `{` and any following
[INFO] [stdout]    | 
[INFO] [stdout]   ::: examples/json.rs:4:1
[INFO] [stdout]    |
[INFO] [stdout] 4  | / println!("{}",
[INFO] [stdout] 5  | |     json! ({
[INFO] [stdout] 6  | |         "hello": 42,
[INFO] [stdout] 7  | |     })
[INFO] [stdout] 8  | | );
[INFO] [stdout]    | |__- caused by the macro expansion here
[INFO] [stdout]    |
[INFO] [stdout]    = note: the usage of `println!` is likely invalid in item context
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: macro expansion ignores token `{` and any following
[INFO] [stdout]    | 
[INFO] [stdout]   ::: examples/hello.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  |   println!("hello, world!");
[INFO] [stdout]    |   -------------------------- caused by the macro expansion here
[INFO] [stdout]    |
[INFO] [stdout]    = note: the usage of `println!` is likely invalid in item context
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `hello`
[INFO] [stdout]  --> examples/hello.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | println!("hello, world!");
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^ consider adding a `main` function to `examples/hello.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `serde_json`
[INFO] [stdout]  --> examples/json.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde_json::json;
[INFO] [stdout]   |     ^^^^^^^^^^ use of undeclared type or module `serde_json`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `json`
[INFO] [stdout]  --> examples/json.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | / use serde_json::json;
[INFO] [stdout] 3 | |
[INFO] [stdout] 4 | | println!("{}",
[INFO] [stdout] 5 | |     json! ({
[INFO] [stdout] 6 | |         "hello": 42,
[INFO] [stdout] 7 | |     })
[INFO] [stdout] 8 | | );
[INFO] [stdout]   | |__^ consider adding a `main` function to `examples/json.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0601.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/crate_utils.rs:9:1
[INFO] [stdout]    |
[INFO] [stdout] 9  | / lazy_static! {
[INFO] [stdout] 10 | |     pub static ref RUSTUP_LIB: String = es::shell("rustc --print sysroot") + "/lib";
[INFO] [stdout] 11 | |     pub static ref UNSTABLE: bool = RUSTUP_LIB.find("nightly").is_some();
[INFO] [stdout] 12 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/crate_utils.rs:9:1
[INFO] [stdout]    |
[INFO] [stdout] 9  | / lazy_static! {
[INFO] [stdout] 10 | |     pub static ref RUSTUP_LIB: String = es::shell("rustc --print sysroot") + "/lib";
[INFO] [stdout] 11 | |     pub static ref UNSTABLE: bool = RUSTUP_LIB.find("nightly").is_some();
[INFO] [stdout] 12 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "2c011e512aaee684f36bc13bd2b3ef1b74e2ed38bbc743f981a48fa68aa3a9bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c011e512aaee684f36bc13bd2b3ef1b74e2ed38bbc743f981a48fa68aa3a9bc", kill_on_drop: false }`
[INFO] [stdout] 2c011e512aaee684f36bc13bd2b3ef1b74e2ed38bbc743f981a48fa68aa3a9bc
