[INFO] cloning repository https://github.com/hello2dj/rust-practice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hello2dj/rust-practice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhello2dj%2Frust-practice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhello2dj%2Frust-practice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ce0d5883667b72104cdd70b2882319ddf6fdb47a
[INFO] testing hello2dj/rust-practice against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhello2dj%2Frust-practice" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hello2dj/rust-practice on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hello2dj/rust-practice
[INFO] finished tweaking git repo https://github.com/hello2dj/rust-practice
[INFO] tweaked toml for git repo https://github.com/hello2dj/rust-practice written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/hello2dj/rust-practice already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2939a391fdbcf1043b2ab415a3bce98ca67f10e9bd1e4c90fa0b13748286faf3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2939a391fdbcf1043b2ab415a3bce98ca67f10e9bd1e4c90fa0b13748286faf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2939a391fdbcf1043b2ab415a3bce98ca67f10e9bd1e4c90fa0b13748286faf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2939a391fdbcf1043b2ab415a3bce98ca67f10e9bd1e4c90fa0b13748286faf3", kill_on_drop: false }`
[INFO] [stdout] 2939a391fdbcf1043b2ab415a3bce98ca67f10e9bd1e4c90fa0b13748286faf3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c28e89f61a0ff462bc8ff5257867b3e322cc90646d3bb62a842a579ff0bbe05d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c28e89f61a0ff462bc8ff5257867b3e322cc90646d3bb62a842a579ff0bbe05d", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-bigint v0.2.1
[INFO] [stderr]    Compiling flate2-crc v0.1.1
[INFO] [stderr]    Compiling bit-vec v0.5.0
[INFO] [stderr]    Compiling bufstream v0.1.4
[INFO] [stderr]    Compiling uuid v0.6.5
[INFO] [stderr]    Compiling regex-syntax v0.6.3
[INFO] [stderr]    Compiling smallvec v0.6.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.6.1
[INFO] [stderr]    Compiling tokio-timer v0.2.8
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling checked v0.5.0
[INFO] [stderr]    Compiling atoi v0.2.3
[INFO] [stderr]    Compiling twox-hash v1.1.1
[INFO] [stderr]    Compiling serde_json v1.0.33
[INFO] [stderr]    Compiling csv-core v0.1.5
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]    Compiling bytes v0.4.11
[INFO] [stderr]    Compiling mio v0.6.16
[INFO] [stderr]    Compiling rand v0.6.1
[INFO] [stderr]    Compiling parking_lot_core v0.3.1
[INFO] [stderr]    Compiling csv v1.0.5
[INFO] [stderr]    Compiling crossbeam-deque v0.6.2
[INFO] [stderr]    Compiling parking_lot v0.6.4
[INFO] [stderr]    Compiling flate2 v1.0.5
[INFO] [stderr]    Compiling tokio-io v0.1.10
[INFO] [stderr]    Compiling mio-uds v0.6.7
[INFO] [stderr]    Compiling tokio-threadpool v0.1.9
[INFO] [stderr]    Compiling tokio-reactor v0.1.7
[INFO] [stderr]    Compiling tokio-codec v0.1.1
[INFO] [stderr]    Compiling tokio-fs v0.1.4
[INFO] [stderr]    Compiling tokio-tcp v0.1.2
[INFO] [stderr]    Compiling tokio-uds v0.2.4
[INFO] [stderr]    Compiling tokio-udp v0.1.3
[INFO] [stderr]    Compiling tokio v0.1.13
[INFO] [stderr]    Compiling serde_derive v1.0.87
[INFO] [stderr]    Compiling regex v1.0.6
[INFO] [stderr]    Compiling mysql_common v0.9.2
[INFO] [stderr]    Compiling mysql v14.1.1
[INFO] [stderr]    Compiling future v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0412]: cannot find type `NoneError` in module `std::option`
[INFO] [stdout]  --> src/acronym.rs:7:60
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub fn acronym(input: &str) -> Result<String, std::option::NoneError> {
[INFO] [stdout]   |                                                            ^^^^^^^^^ not found in `std::option`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `NoneError` in module `std::option`
[INFO] [stdout]   --> src/acronym.rs:17:52
[INFO] [stdout]    |
[INFO] [stdout] 17 |         .map(|word| -> Result<String, std::option::NoneError> {
[INFO] [stdout]    |                                                    ^^^^^^^^^ not found in `std::option`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `NoneError` in module `std::option`
[INFO] [stdout]   --> src/acronym.rs:20:48
[INFO] [stdout]    |
[INFO] [stdout] 20 |         .collect::<Result<String, std::option::NoneError>>();
[INFO] [stdout]    |                                                ^^^^^^^^^ not found in `std::option`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(trace_macros)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(dbg_macro)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(try_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::process`
[INFO] [stdout]  --> src/csv.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::process;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::error::Error`
[INFO] [stdout]  --> src/acronym.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::error::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> src/acronym.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/null.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `future`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "c28e89f61a0ff462bc8ff5257867b3e322cc90646d3bb62a842a579ff0bbe05d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c28e89f61a0ff462bc8ff5257867b3e322cc90646d3bb62a842a579ff0bbe05d", kill_on_drop: false }`
[INFO] [stdout] c28e89f61a0ff462bc8ff5257867b3e322cc90646d3bb62a842a579ff0bbe05d
