[INFO] fetching crate monster 0.1.28...
[INFO] checking monster-0.1.28 against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] extracting crate monster 0.1.28 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate monster 0.1.28 on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-12/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a1de3142439c798829c64d1feb52c162376765014cec9441da967bc976071035
[INFO] running `"docker" "start" "-a" "a1de3142439c798829c64d1feb52c162376765014cec9441da967bc976071035"`
[INFO] [stderr]     Checking monster v0.1.28 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/incubation/fmt/mod.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     try!(write_format(&mut buffer, fmt, args));
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/incubation/fmt/mod.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |                 _   => try!(buffer.write_char(ch))
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/incubation/fmt/mod.rs:53:21
[INFO] [stderr]    |
[INFO] [stderr] 53 |                     try!(buffer.write_char(ch));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/incubation/fmt/mod.rs:59:38
[INFO] [stderr]    |
[INFO] [stderr] 59 |                         Some(arg) => try!(write!(buffer, "{}", arg)),
[INFO] [stderr]    |                                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/incubation/fmt/mod.rs:68:21
[INFO] [stderr]    |
[INFO] [stderr] 68 |                     try!(buffer.write_char(ch));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/incubation/fmt/mod.rs:30:35
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn format(fmt: &str, args: &[&Display]) -> Result<String> {
[INFO] [stderr]    |                                   ^^^^^^^ help: use `dyn`: `dyn Display`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/incubation/fmt/mod.rs:39:67
[INFO] [stderr]    |
[INFO] [stderr] 39 | pub fn write_format<W: Write>(buffer: &mut W, fmt: &str, args: &[&Display]) -> Result<()> {
[INFO] [stderr]    |                                                                   ^^^^^^^ help: use `dyn`: `dyn Display`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]   --> src/incubation/map_ref_mut.rs:21:20
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let dummy: T = mem::uninitialized();
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/incubation/fmt/mod.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     try!(write_format(&mut buffer, fmt, args));
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/incubation/fmt/mod.rs:48:24
[INFO] [stderr]    |
[INFO] [stderr] 48 |                 _   => try!(buffer.write_char(ch))
[INFO] [stderr]    |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/incubation/fmt/mod.rs:53:21
[INFO] [stderr]    |
[INFO] [stderr] 53 |                     try!(buffer.write_char(ch));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/incubation/fmt/mod.rs:59:38
[INFO] [stderr]    |
[INFO] [stderr] 59 |                         Some(arg) => try!(write!(buffer, "{}", arg)),
[INFO] [stderr]    |                                      ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/incubation/fmt/mod.rs:68:21
[INFO] [stderr]    |
[INFO] [stderr] 68 |                     try!(buffer.write_char(ch));
[INFO] [stderr]    |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/incubation/fmt/mod.rs:30:35
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub fn format(fmt: &str, args: &[&Display]) -> Result<String> {
[INFO] [stderr]    |                                   ^^^^^^^ help: use `dyn`: `dyn Display`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/incubation/fmt/mod.rs:39:67
[INFO] [stderr]    |
[INFO] [stderr] 39 | pub fn write_format<W: Write>(buffer: &mut W, fmt: &str, args: &[&Display]) -> Result<()> {
[INFO] [stderr]    |                                                                   ^^^^^^^ help: use `dyn`: `dyn Display`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/incubation/fmt/mod.rs:71:22
[INFO] [stderr]    |
[INFO] [stderr] 71 |                 _ => return return Err(Error::UnexpectedRightBrace) // No standalone right brace allowed
[INFO] [stderr]    |                      ^^^^^^^---------------------------------------
[INFO] [stderr]    |                      |      |
[INFO] [stderr]    |                      |      any code following this expression is unreachable
[INFO] [stderr]    |                      unreachable expression
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::mem::uninitialized': use `mem::MaybeUninit` instead
[INFO] [stderr]   --> src/incubation/map_ref_mut.rs:21:20
[INFO] [stderr]    |
[INFO] [stderr] 21 |     let dummy: T = mem::uninitialized();
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable expression
[INFO] [stderr]   --> src/incubation/fmt/mod.rs:71:22
[INFO] [stderr]    |
[INFO] [stderr] 71 |                 _ => return return Err(Error::UnexpectedRightBrace) // No standalone right brace allowed
[INFO] [stderr]    |                      ^^^^^^^---------------------------------------
[INFO] [stderr]    |                      |      |
[INFO] [stderr]    |                      |      any code following this expression is unreachable
[INFO] [stderr]    |                      unreachable expression
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `"docker" "inspect" "a1de3142439c798829c64d1feb52c162376765014cec9441da967bc976071035"`
[INFO] running `"docker" "rm" "-f" "a1de3142439c798829c64d1feb52c162376765014cec9441da967bc976071035"`
[INFO] [stdout] a1de3142439c798829c64d1feb52c162376765014cec9441da967bc976071035