[INFO] updating cached repository https://github.com/TartanLlama/AidanC
[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] 4a14642f24c39ad6364ee82a62c2f88aefbb1c4c
[INFO] testing TartanLlama/AidanC against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FTartanLlama%2FAidanC" "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/TartanLlama/AidanC 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/TartanLlama/AidanC
[INFO] finished tweaking git repo https://github.com/TartanLlama/AidanC
[INFO] tweaked toml for git repo https://github.com/TartanLlama/AidanC written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/TartanLlama/AidanC 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] [stderr] error: the lock file /big/crater/work/builds/worker-7/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/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] bcf9f7abcae481c3e009f5adc4dfece69c8a995ba1d5b0755e4d23ddf7295103
[INFO] running `"docker" "start" "-a" "bcf9f7abcae481c3e009f5adc4dfece69c8a995ba1d5b0755e4d23ddf7295103"`
[INFO] [stderr]    Compiling itertools v0.8.0
[INFO] [stderr]    Compiling aidan-c v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0432]: unresolved import `std::io::Chars`
[INFO] [stderr]  --> src/lex/mod.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::io::Chars;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^ no `Chars` in `io`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(io)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> src/lib.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | #![feature(trace_macros)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #[macro_use] extern crate itertools;
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter::Peekable`
[INFO] [stderr]  --> src/lex/mod.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::iter::Peekable;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `itertools::PutBack`
[INFO] [stderr]  --> src/lex/mod.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use itertools::PutBack;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 3 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0432, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0432`.
[INFO] [stderr] error: could not compile `aidan-c`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "bcf9f7abcae481c3e009f5adc4dfece69c8a995ba1d5b0755e4d23ddf7295103"`
[INFO] running `"docker" "rm" "-f" "bcf9f7abcae481c3e009f5adc4dfece69c8a995ba1d5b0755e4d23ddf7295103"`
[INFO] [stdout] bcf9f7abcae481c3e009f5adc4dfece69c8a995ba1d5b0755e4d23ddf7295103