[INFO] cloning repository SamuelMarks/rust-playground
[INFO] running `"git" "clone" "--bare" "git://github.com/SamuelMarks/rust-playground.git" "work/cache/sources/gh/SamuelMarks/rust-playground"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/SamuelMarks/rust-playground'...
[INFO] running `"git" "clone" "work/cache/sources/gh/SamuelMarks/rust-playground" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/SamuelMarks/rust-playground"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/SamuelMarks/rust-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/SamuelMarks/rust-playground" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/SamuelMarks/rust-playground"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/SamuelMarks/rust-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 436a6d87e5ee54c7b48bcfd6bb0a9f75c2ba9273
[INFO] sha for GitHub repo SamuelMarks/rust-playground: 436a6d87e5ee54c7b48bcfd6bb0a9f75c2ba9273
[INFO] validating manifest of SamuelMarks/rust-playground on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of SamuelMarks/rust-playground on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing SamuelMarks/rust-playground
[INFO] finished frobbing SamuelMarks/rust-playground
[INFO] frobbed toml for SamuelMarks/rust-playground written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/SamuelMarks/rust-playground/Cargo.toml
[INFO] started frobbing SamuelMarks/rust-playground
[INFO] finished frobbing SamuelMarks/rust-playground
[INFO] frobbed toml for SamuelMarks/rust-playground written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/SamuelMarks/rust-playground/Cargo.toml
[INFO] crate SamuelMarks/rust-playground already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing SamuelMarks/rust-playground against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-4/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/SamuelMarks/rust-playground:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"`
[INFO] [stdout] b2b746fbd4498c97a2bcf874ddaf83a5d4664bd596595264fc190b3151ea72ee
[INFO] running `"docker" "start" "-a" "b2b746fbd4498c97a2bcf874ddaf83a5d4664bd596595264fc190b3151ea72ee"`
[INFO] [stderr]    Compiling rust-playground v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: maybe a missing `extern crate core;`?
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use core::num::ParseIntError;
[INFO] [stderr]    |     ^^^^ maybe a missing `extern crate core;`?
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `ParseIntError` in this scope
[INFO] [stderr]   --> src/main.rs:66:16
[INFO] [stderr]    |
[INFO] [stderr] 66 |     type Err = ParseIntError;
[INFO] [stderr]    |                ^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] help: possible candidate is found in another module, you can import it into scope
[INFO] [stderr]    |
[INFO] [stderr] 9  | use std::num::ParseIntError;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::num::ParseIntError`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use core::num::ParseIntError;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0277]: the trait bound `std::option::Option<Script>: std::str::FromStr` is not satisfied
[INFO] [stderr]    --> src/main.rs:115:18
[INFO] [stderr]     |
[INFO] [stderr] 115 |     deserializer.deserialize_any(StringOrStruct(PhantomData))
[INFO] [stderr]     |                  ^^^^^^^^^^^^^^^ the trait `std::str::FromStr` is not implemented for `std::option::Option<Script>`
[INFO] [stderr]     |
[INFO] [stderr]     = note: required because of the requirements on the impl of `serde::de::Visitor<'de>` for `string_or_struct::StringOrStruct<std::option::Option<Script>>`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0277, E0412, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0277`.
[INFO] [stderr] error: Could not compile `rust-playground`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "b2b746fbd4498c97a2bcf874ddaf83a5d4664bd596595264fc190b3151ea72ee"`
[INFO] running `"docker" "rm" "-f" "b2b746fbd4498c97a2bcf874ddaf83a5d4664bd596595264fc190b3151ea72ee"`
[INFO] [stdout] b2b746fbd4498c97a2bcf874ddaf83a5d4664bd596595264fc190b3151ea72ee