[INFO] updating cached repository eden-builder/rust_eden
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/eden-builder/rust_eden
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/eden-builder/rust_eden" "work/ex/beta-1.38-1/sources/1.37.0/gh/eden-builder/rust_eden"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/eden-builder/rust_eden'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/eden-builder/rust_eden" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/eden-builder/rust_eden"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/eden-builder/rust_eden'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e5bebfe630520d6f26049fa8dd449bcc16ade72d
[INFO] sha for GitHub repo eden-builder/rust_eden: e5bebfe630520d6f26049fa8dd449bcc16ade72d
[INFO] validating manifest of eden-builder/rust_eden on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of eden-builder/rust_eden on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing eden-builder/rust_eden
[INFO] finished frobbing eden-builder/rust_eden
[INFO] frobbed toml for eden-builder/rust_eden written to work/ex/beta-1.38-1/sources/1.37.0/gh/eden-builder/rust_eden/Cargo.toml
[INFO] started frobbing eden-builder/rust_eden
[INFO] finished frobbing eden-builder/rust_eden
[INFO] frobbed toml for eden-builder/rust_eden written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/eden-builder/rust_eden/Cargo.toml
[INFO] crate eden-builder/rust_eden already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing eden-builder/rust_eden against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/eden-builder/rust_eden:/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 2ee41ef7087f10ee995f3d47cbd25d31b4700eb4966bb0391a468c6d7c1bf999
[INFO] running `"docker" "start" "-a" "2ee41ef7087f10ee995f3d47cbd25d31b4700eb4966bb0391a468c6d7c1bf999"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.26
[INFO] [stderr]    Compiling byteorder v1.3.0
[INFO] [stderr]    Compiling cc v1.0.28
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.33
[INFO] [stderr]    Compiling memchr v2.1.3
[INFO] [stderr]    Compiling openssl v0.10.16
[INFO] [stderr]    Compiling serde v1.0.85
[INFO] [stderr]    Compiling crc32fast v1.1.2
[INFO] [stderr]    Compiling wasm-bindgen v0.2.33
[INFO] [stderr]    Compiling encoding_rs v0.8.14
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling smallvec v0.6.8
[INFO] [stderr]    Compiling tokio-executor v0.1.6
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling num_cpus v1.9.0
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling rand v0.5.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.0
[INFO] [stderr]    Compiling tokio-timer v0.2.8
[INFO] [stderr]    Compiling tokio-current-thread v0.1.4
[INFO] [stderr]    Compiling futures-cpupool v0.1.8
[INFO] [stderr]    Compiling mio v0.6.16
[INFO] [stderr]    Compiling mime v0.3.13
[INFO] [stderr]    Compiling crossbeam-deque v0.6.3
[INFO] [stderr]    Compiling nom v4.1.1
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling uuid v0.7.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling openssl-sys v0.9.40
[INFO] [stderr]    Compiling bytes v0.4.11
[INFO] [stderr]    Compiling base64 v0.10.0
[INFO] [stderr]    Compiling libflate v0.1.19
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling weedle v0.8.0
[INFO] [stderr]    Compiling tokio-io v0.1.11
[INFO] [stderr]    Compiling http v0.1.14
[INFO] [stderr]    Compiling parking_lot v0.7.1
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling crossbeam-channel v0.3.6
[INFO] [stderr]    Compiling tokio-reactor v0.1.8
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]    Compiling native-tls v0.2.2
[INFO] [stderr]    Compiling env_logger v0.6.0
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling tokio-threadpool v0.1.10
[INFO] [stderr]    Compiling h2 v0.1.15
[INFO] [stderr]    Compiling serde_json v1.0.36
[INFO] [stderr]    Compiling serde_urlencoded v0.5.4
[INFO] [stderr]    Compiling tokio v0.1.14
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.33
[INFO] [stderr]    Compiling hyper v0.12.21
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.33
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling hyper-tls v0.3.1
[INFO] [stderr]    Compiling reqwest v0.9.8
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.33
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling wasm-bindgen-webidl v0.2.27
[INFO] [stderr]    Compiling js-sys v0.3.10
[INFO] [stderr]    Compiling web-sys v0.3.10
[INFO] [stderr]    Compiling rust_eden v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/utils.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `col`
[INFO] [stderr]   --> src/main.rs:12:9
[INFO] [stderr]    |
[INFO] [stderr] 12 |     let col = column_indexes[0].column(&world);
[INFO] [stderr]    |         ^^^ help: consider prefixing with an underscore: `_col`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error[E0596]: cannot borrow `*world` as mutable, as it is behind a `&` reference
[INFO] [stderr]    --> src/utils.rs:103:9
[INFO] [stderr]     |
[INFO] [stderr] 102 |     pub fn column(&self, world: &WorldFile) -> Column {
[INFO] [stderr]     |                                 ---------- help: consider changing this to be a mutable reference: `&mut utils::WorldFile`
[INFO] [stderr] 103 |         world.column(self.chunk_offset)
[INFO] [stderr]     |         ^^^^^ `world` is a `&` reference, so the data it refers to cannot be borrowed as mutable
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0596`.
[INFO] [stderr] error: Could not compile `rust_eden`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "2ee41ef7087f10ee995f3d47cbd25d31b4700eb4966bb0391a468c6d7c1bf999"`
[INFO] running `"docker" "rm" "-f" "2ee41ef7087f10ee995f3d47cbd25d31b4700eb4966bb0391a468c6d7c1bf999"`
[INFO] [stdout] 2ee41ef7087f10ee995f3d47cbd25d31b4700eb4966bb0391a468c6d7c1bf999