[INFO] fetching crate monster 0.1.28...
[INFO] checking monster-0.1.28 against master#cfbc6d4cf1acbac5c025acf8ed68929caa551df3 for pr-75494-beta
[INFO] extracting crate monster 0.1.28 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate monster 0.1.28 on toolchain cfbc6d4cf1acbac5c025acf8ed68929caa551df3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate monster 0.1.28
[INFO] finished tweaking crates.io crate monster 0.1.28
[INFO] tweaked toml for crates.io crate monster 0.1.28 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eb19000cddbdd4c38df6d59bfd86814f79f83606954bc86f1c010277f901b4ac
[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" "eb19000cddbdd4c38df6d59bfd86814f79f83606954bc86f1c010277f901b4ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb19000cddbdd4c38df6d59bfd86814f79f83606954bc86f1c010277f901b4ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb19000cddbdd4c38df6d59bfd86814f79f83606954bc86f1c010277f901b4ac", kill_on_drop: false }`
[INFO] [stdout] eb19000cddbdd4c38df6d59bfd86814f79f83606954bc86f1c010277f901b4ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+cfbc6d4cf1acbac5c025acf8ed68929caa551df3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 581087cc32f0163ef6ec2d8903932e015b22a374ebe274a3ce8dd3477272cdcd
[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" "581087cc32f0163ef6ec2d8903932e015b22a374ebe274a3ce8dd3477272cdcd", kill_on_drop: false }`
[INFO] [stderr]     Checking monster v0.1.28 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/incubation/fmt/mod.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     try!(write_format(&mut buffer, fmt, args));
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/incubation/fmt/mod.rs:48:24
[INFO] [stdout]    |
[INFO] [stdout] 48 |                 _   => try!(buffer.write_char(ch))
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/incubation/fmt/mod.rs:53:21
[INFO] [stdout]    |
[INFO] [stdout] 53 |                     try!(buffer.write_char(ch));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/incubation/fmt/mod.rs:59:38
[INFO] [stdout]    |
[INFO] [stdout] 59 |                         Some(arg) => try!(write!(buffer, "{}", arg)),
[INFO] [stdout]    |                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/incubation/fmt/mod.rs:68:21
[INFO] [stdout]    |
[INFO] [stdout] 68 |                     try!(buffer.write_char(ch));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/incubation/fmt/mod.rs:30:35
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn format(fmt: &str, args: &[&Display]) -> Result<String> {
[INFO] [stdout]    |                                   ^^^^^^^ help: use `dyn`: `dyn Display`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/incubation/fmt/mod.rs:39:67
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn write_format<W: Write>(buffer: &mut W, fmt: &str, args: &[&Display]) -> Result<()> {
[INFO] [stdout]    |                                                                   ^^^^^^^ help: use `dyn`: `dyn Display`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/incubation/fmt/mod.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 33 |     try!(write_format(&mut buffer, fmt, args));
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/incubation/fmt/mod.rs:48:24
[INFO] [stdout]    |
[INFO] [stdout] 48 |                 _   => try!(buffer.write_char(ch))
[INFO] [stdout]    |                        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/incubation/fmt/mod.rs:53:21
[INFO] [stdout]    |
[INFO] [stdout] 53 |                     try!(buffer.write_char(ch));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/incubation/fmt/mod.rs:59:38
[INFO] [stdout]    |
[INFO] [stdout] 59 |                         Some(arg) => try!(write!(buffer, "{}", arg)),
[INFO] [stdout]    |                                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]   --> src/incubation/fmt/mod.rs:68:21
[INFO] [stdout]    |
[INFO] [stdout] 68 |                     try!(buffer.write_char(ch));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/incubation/fmt/mod.rs:30:35
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn format(fmt: &str, args: &[&Display]) -> Result<String> {
[INFO] [stdout]    |                                   ^^^^^^^ help: use `dyn`: `dyn Display`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/incubation/fmt/mod.rs:39:67
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn write_format<W: Write>(buffer: &mut W, fmt: &str, args: &[&Display]) -> Result<()> {
[INFO] [stdout]    |                                                                   ^^^^^^^ help: use `dyn`: `dyn Display`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/incubation/map_ref_mut.rs:21:20
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let dummy: T = mem::uninitialized();
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/incubation/map_ref_mut.rs:21:20
[INFO] [stdout]    |
[INFO] [stdout] 21 |     let dummy: T = mem::uninitialized();
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/incubation/fmt/mod.rs:71:22
[INFO] [stdout]    |
[INFO] [stdout] 71 |                 _ => return return Err(Error::UnexpectedRightBrace) // No standalone right brace allowed
[INFO] [stdout]    |                      ^^^^^^^---------------------------------------
[INFO] [stdout]    |                      |      |
[INFO] [stdout]    |                      |      any code following this expression is unreachable
[INFO] [stdout]    |                      unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/incubation/fmt/error.rs:18:48
[INFO] [stdout]    |
[INFO] [stdout] 18 |         write!(f, "Formatting error: {}", self.description())
[INFO] [stdout]    |                                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]   --> src/incubation/fmt/mod.rs:71:22
[INFO] [stdout]    |
[INFO] [stdout] 71 |                 _ => return return Err(Error::UnexpectedRightBrace) // No standalone right brace allowed
[INFO] [stdout]    |                      ^^^^^^^---------------------------------------
[INFO] [stdout]    |                      |      |
[INFO] [stdout]    |                      |      any code following this expression is unreachable
[INFO] [stdout]    |                      unreachable expression
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/incubation/fmt/error.rs:18:48
[INFO] [stdout]    |
[INFO] [stdout] 18 |         write!(f, "Formatting error: {}", self.description())
[INFO] [stdout]    |                                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "581087cc32f0163ef6ec2d8903932e015b22a374ebe274a3ce8dd3477272cdcd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "581087cc32f0163ef6ec2d8903932e015b22a374ebe274a3ce8dd3477272cdcd", kill_on_drop: false }`
[INFO] [stdout] 581087cc32f0163ef6ec2d8903932e015b22a374ebe274a3ce8dd3477272cdcd
