[INFO] cloning repository maiso/RustCursus
[INFO] running `"git" "clone" "--bare" "git://github.com/maiso/RustCursus.git" "work/cache/sources/gh/maiso/RustCursus"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/maiso/RustCursus'...
[INFO] running `"git" "clone" "work/cache/sources/gh/maiso/RustCursus" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/maiso/RustCursus"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/maiso/RustCursus'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/maiso/RustCursus" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/maiso/RustCursus"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/maiso/RustCursus'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 581e5238a37133894c462e1774150ffe6b4b421c
[INFO] sha for GitHub repo maiso/RustCursus: 581e5238a37133894c462e1774150ffe6b4b421c
[INFO] validating manifest of maiso/RustCursus on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of maiso/RustCursus on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing maiso/RustCursus
[INFO] finished frobbing maiso/RustCursus
[INFO] frobbed toml for maiso/RustCursus written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/maiso/RustCursus/Cargo.toml
[INFO] started frobbing maiso/RustCursus
[INFO] finished frobbing maiso/RustCursus
[INFO] frobbed toml for maiso/RustCursus written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/maiso/RustCursus/Cargo.toml
[INFO] crate maiso/RustCursus already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking maiso/RustCursus against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-3/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/maiso/RustCursus:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2f542f18f1ff91cfa8aff92f6dea2d3626d29d9a8fb24c4d165dbb839cd235a3
[INFO] running `"docker" "start" "-a" "2f542f18f1ff91cfa8aff92f6dea2d3626d29d9a8fb24c4d165dbb839cd235a3"`
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]     Checking wait-timeout v0.1.5
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking tempfile v3.0.5
[INFO] [stderr]     Checking rusty-fork v0.2.1
[INFO] [stderr]     Checking proptest v0.8.7
[INFO] [stderr]     Checking queue v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]  --> src/main.rs:2:15
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::{Read, Write };
[INFO] [stderr]   |               ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/main.rs:4:15
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::{self, BufReader};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:65:38
[INFO] [stderr]    |
[INFO] [stderr] 65 |         MyCommand::InvalidCommand{reason : x} => {
[INFO] [stderr]    |                                            ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/main.rs:68:40
[INFO] [stderr]    |
[INFO] [stderr] 68 |         MyCommand::InvalidParameter{reason : x} => {
[INFO] [stderr]    |                                              ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::proptest::sugar::proptest_helper macros>:110:20
[INFO] [stderr]     |
[INFO] [stderr] 105 | @ _BODY $ config : ident ( $ ( $ parm : pat in $ strategy : expr ) , + ) [
[INFO] [stderr]     |                                                                      - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 110 | ( @ _WRAPSTR ( $ ( $ parm ) , * ) ) ; match runner . run (
[INFO] [stderr]     |                    ^^^^^^     - conflicting repetition
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[deny(meta_variable_misuse)] on by default
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::proptest::sugar::proptest_helper macros>:112:35
[INFO] [stderr]     |
[INFO] [stderr] 105 | @ _BODY $ config : ident ( $ ( $ parm : pat in $ strategy : expr ) , + ) [
[INFO] [stderr]     |                                                                      - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 112 | proptest_helper ! ( @ _WRAP ( $ ( $ strategy ) * ) ) , | values | $ crate ::
[INFO] [stderr]     |                                   ^^^^^^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::proptest::sugar::proptest_helper macros>:115:42
[INFO] [stderr]     |
[INFO] [stderr] 105 | @ _BODY $ config : ident ( $ ( $ parm : pat in $ strategy : expr ) , + ) [
[INFO] [stderr]     |                                                                      - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 115 | _ , proptest_helper ! ( @ _WRAPPAT ( $ ( $ parm ) , * ) ) ) | {
[INFO] [stderr]     |                                          ^^^^^^     - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::proptest::sugar::proptest_helper macros>:123:21
[INFO] [stderr]     |
[INFO] [stderr] 118 | @ _BODY2 $ config : ident ( $ ( $ arg : tt ) + ) [ $ ( $ mod : tt ) * ] $ body
[INFO] [stderr]     |                                              - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 123 | ( @ _EXT _STR ( $ ( $ arg ) * ) ) ; match runner . run (
[INFO] [stderr]     |                     ^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::proptest::sugar::proptest_helper macros>:125:41
[INFO] [stderr]     |
[INFO] [stderr] 118 | @ _BODY2 $ config : ident ( $ ( $ arg : tt ) + ) [ $ ( $ mod : tt ) * ] $ body
[INFO] [stderr]     |                                              - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 125 | proptest_helper ! ( @ _EXT _STRAT ( $ ( $ arg ) * ) ) , | values | $ crate ::
[INFO] [stderr]     |                                         ^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] error: meta-variable repeats with different Kleene operator
[INFO] [stderr]    --> <::proptest::sugar::proptest_helper macros>:128:43
[INFO] [stderr]     |
[INFO] [stderr] 118 | @ _BODY2 $ config : ident ( $ ( $ arg : tt ) + ) [ $ ( $ mod : tt ) * ] $ body
[INFO] [stderr]     |                                              - expected repetition
[INFO] [stderr] ...
[INFO] [stderr] 128 | _ , proptest_helper ! ( @ _EXT _PAT ( $ ( $ arg ) * ) ) ) | {
[INFO] [stderr]     |                                           ^^^^^   - conflicting repetition
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]  --> src/main.rs:2:15
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::{Read, Write };
[INFO] [stderr]   |               ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/main.rs:4:15
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io::{self, BufReader};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 6 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `queue`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "2f542f18f1ff91cfa8aff92f6dea2d3626d29d9a8fb24c4d165dbb839cd235a3"`
[INFO] running `"docker" "rm" "-f" "2f542f18f1ff91cfa8aff92f6dea2d3626d29d9a8fb24c4d165dbb839cd235a3"`
[INFO] [stdout] 2f542f18f1ff91cfa8aff92f6dea2d3626d29d9a8fb24c4d165dbb839cd235a3