[INFO] updating cached repository https://github.com/emk/rust-slow-iteration-demo
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/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] f2ea535c506de87273be0529ef77b4ce8c19681b
[INFO] testing emk/rust-slow-iteration-demo against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Femk%2Frust-slow-iteration-demo" "work/builds/worker-1/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/emk/rust-slow-iteration-demo on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/emk/rust-slow-iteration-demo
[INFO] finished tweaking git repo https://github.com/emk/rust-slow-iteration-demo
[INFO] tweaked toml for git repo https://github.com/emk/rust-slow-iteration-demo written to work/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/emk/rust-slow-iteration-demo already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/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=warn" "-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" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 2cadbec26f4b17ae8d13179cb13d3bda14444f853d751715a4db0dcf43fa4a01
[INFO] running `"docker" "start" "-a" "2cadbec26f4b17ae8d13179cb13d3bda14444f853d751715a4db0dcf43fa4a01"`
[INFO] [stderr]    Compiling rust-slow-iteration-demo v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: invalid suffix `u` for integer literal
[INFO] [stderr]   --> src/lib.rs:35:20
[INFO] [stderr]    |
[INFO] [stderr] 35 |     for _ in range(0u, 200) { result.push_str(LINE); }
[INFO] [stderr]    |                    ^^ invalid suffix `u`
[INFO] [stderr]    |
[INFO] [stderr]    = help: the suffix must be one of the integral types (`u32`, `isize`, etc)
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `uint` in this scope
[INFO] [stderr]   --> src/lib.rs:54:13
[INFO] [stderr]    |
[INFO] [stderr] 54 |     offset: uint,
[INFO] [stderr]    |             ^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0603]: module `range` is private
[INFO] [stderr]   --> src/lib.rs:23:16
[INFO] [stderr]    |
[INFO] [stderr] 23 | use std::iter::range;
[INFO] [stderr]    |                ^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]   --> src/lib.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | #![feature(macro_rules, trace_macros)]
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of unstable library feature 'test': `bench` is a part of custom test frameworks which are unstable
[INFO] [stderr]    --> src/lib.rs:112:3
[INFO] [stderr]     |
[INFO] [stderr] 112 | #[bench]
[INFO] [stderr]     |   ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(soft_unstable)]` on by default
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #64266 <https://github.com/rust-lang/rust/issues/64266>
[INFO] [stderr] 
[INFO] [stderr] warning: use of unstable library feature 'test': `bench` is a part of custom test frameworks which are unstable
[INFO] [stderr]    --> src/lib.rs:176:3
[INFO] [stderr]     |
[INFO] [stderr] 176 | #[bench]
[INFO] [stderr]     |   ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #64266 <https://github.com/rust-lang/rust/issues/64266>
[INFO] [stderr] 
[INFO] [stderr] warning: use of unstable library feature 'test': `bench` is a part of custom test frameworks which are unstable
[INFO] [stderr]    --> src/lib.rs:229:3
[INFO] [stderr]     |
[INFO] [stderr] 229 | #[bench]
[INFO] [stderr]     |   ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]     = note: for more information, see issue #64266 <https://github.com/rust-lang/rust/issues/64266>
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]    --> src/lib.rs:214:1
[INFO] [stderr]     |
[INFO] [stderr] 214 | / macro_rules! streaming_for {
[INFO] [stderr] 215 | |     ($var:pat in $expr:expr, $b:stmt) => {
[INFO] [stderr] 216 | |         {
[INFO] [stderr] 217 | |             // Only evaluate once!
[INFO] [stderr] ...   |
[INFO] [stderr] 226 | |     };
[INFO] [stderr] 227 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0658]: use of unstable library feature 'test'
[INFO] [stderr]   --> src/lib.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | extern crate test;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: for more information, see https://github.com/rust-lang/rust/issues/50297
[INFO] [stderr] 
[INFO] [stderr] error[E0496]: lifetime name `'a` shadows a lifetime name that is already in scope
[INFO] [stderr]   --> src/lib.rs:74:18
[INFO] [stderr]    |
[INFO] [stderr] 68 | impl<'a> Buffer for BufferedReader<'a> {
[INFO] [stderr]    |      -- first declared here
[INFO] [stderr] ...
[INFO] [stderr] 74 |     fn next_line<'a>(&'a mut self) -> Option<&'a str> {
[INFO] [stderr]    |                  ^^ lifetime 'a already in scope
[INFO] [stderr] 
[INFO] [stderr] error[E0107]: wrong number of type arguments: expected 0, found 1
[INFO] [stderr]   --> src/lib.rs:98:19
[INFO] [stderr]    |
[INFO] [stderr] 98 | impl<'a> Iterator<(String,String,String)> for CopyingParser<'a> {
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^ unexpected type argument
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 7 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0107, E0412, E0496, E0554, E0603, E0658.
[INFO] [stderr] For more information about an error, try `rustc --explain E0107`.
[INFO] [stderr] error: could not compile `rust-slow-iteration-demo`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "2cadbec26f4b17ae8d13179cb13d3bda14444f853d751715a4db0dcf43fa4a01"`
[INFO] running `"docker" "rm" "-f" "2cadbec26f4b17ae8d13179cb13d3bda14444f853d751715a4db0dcf43fa4a01"`
[INFO] [stdout] 2cadbec26f4b17ae8d13179cb13d3bda14444f853d751715a4db0dcf43fa4a01