[INFO] updating cached repository https://github.com/gregtatum/rust-sketches
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d72efc73822d9837cb7856e6dfae8b85bcaec8bd
[INFO] checking gregtatum/rust-sketches against master#4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb for pr-64672
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgregtatum%2Frust-sketches" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gregtatum/rust-sketches on toolchain 4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/gregtatum/rust-sketches
[INFO] finished tweaking git repo https://github.com/gregtatum/rust-sketches
[INFO] tweaked toml for git repo https://github.com/gregtatum/rust-sketches written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/gregtatum/rust-sketches already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ac6f61f7dd63572a190010a2debbd334ce22fead44439db93741bd8eca898fea
[INFO] running `"docker" "start" "-a" "ac6f61f7dd63572a190010a2debbd334ce22fead44439db93741bd8eca898fea"`
[INFO] [stderr]     Checking rust-memory v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0601]: `main` function not found in crate `generic_traits`
[INFO] [stderr]   |
[INFO] [stderr]   = note: consider adding a `main` function to `examples/generic-traits.rs`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0601`.
[INFO] [stderr] error: could not compile `rust-memory`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> examples/transmute-vecs.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |             try!( fmtr.write_fmt(format_args!("{:02x} ", byte)));
[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]   --> examples/memory.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |             try!( fmtr.write_fmt(format_args!("{:02x} ", byte)));
[INFO] [stderr]    |             ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: expected type, found `0`
[INFO] [stderr]   --> examples/macro-expansion.rs:17:17
[INFO] [stderr]    |
[INFO] [stderr] 17 |     cb![Box:new(0), Box::new(1)]
[INFO] [stderr]    |            -    ^ expected type
[INFO] [stderr]    |            |
[INFO] [stderr]    |            help: maybe write a path separator here: `::`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#![feature(type_ascription)]` lets you annotate an expression with a type: `<expr>: <type>`
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/23416
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: could not compile `rust-memory`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused variable: `vecs2`
[INFO] [stderr]   --> examples/transmute-vecs.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |     let vecs2 = vec![[0.0, 0.0], [1.0, 1.0]];
[INFO] [stderr]    |         ^^^^^ help: consider prefixing with an underscore: `_vecs2`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `transmute`
[INFO] [stderr]   --> examples/transmute-vecs.rs:31:1
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn transmute() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `a`
[INFO] [stderr]   --> examples/memory.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     a: i32,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> examples/transmute-vecs.rs:11:17
[INFO] [stderr]    |
[INFO] [stderr] 11 |                 fmtr.write_fmt(format_args!("| "));
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `b`
[INFO] [stderr]   --> examples/memory.rs:33:5
[INFO] [stderr]    |
[INFO] [stderr] 33 |     b: i32
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> examples/memory.rs:11:17
[INFO] [stderr]    |
[INFO] [stderr] 11 |                 fmtr.write_fmt(format_args!("| "));
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "ac6f61f7dd63572a190010a2debbd334ce22fead44439db93741bd8eca898fea"`
[INFO] running `"docker" "rm" "-f" "ac6f61f7dd63572a190010a2debbd334ce22fead44439db93741bd8eca898fea"`
[INFO] [stdout] ac6f61f7dd63572a190010a2debbd334ce22fead44439db93741bd8eca898fea