[INFO] fetching crate undulate 0.1.0...
[INFO] extracting crate undulate 0.1.0 into work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/undulate/0.1.0
[INFO] extracting crate undulate 0.1.0 into work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/undulate/0.1.0
[INFO] validating manifest of undulate-0.1.0 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 undulate-0.1.0 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 undulate-0.1.0
[INFO] finished frobbing undulate-0.1.0
[INFO] frobbed toml for undulate-0.1.0 written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/reg/undulate/0.1.0/Cargo.toml
[INFO] started frobbing undulate-0.1.0
[INFO] finished frobbing undulate-0.1.0
[INFO] frobbed toml for undulate-0.1.0 written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/undulate/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 undulate-0.1.0 against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-2/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/reg/undulate/0.1.0:/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] 6a1103d33a001d00b336c758f2b5bb057e5020efe7e52efa449370b91671e5a8
[INFO] running `"docker" "start" "-a" "6a1103d33a001d00b336c758f2b5bb057e5020efe7e52efa449370b91671e5a8"`
[INFO] [stderr]    Compiling libgit2-sys v0.6.19
[INFO] [stderr]     Checking curl-sys v0.4.20
[INFO] [stderr]     Checking git2 v0.6.11
[INFO] [stderr]     Checking undulate v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `Read`, `self`
[INFO] [stderr]   --> src/lib.rs:12:15
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::io::{self, Read, Write};
[INFO] [stderr]    |               ^^^^  ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Read`, `self`
[INFO] [stderr]   --> src/lib.rs:12:15
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::io::{self, Read, Write};
[INFO] [stderr]    |               ^^^^  ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `specifier`
[INFO] [stderr]   --> src/lib.rs:96:30
[INFO] [stderr]    |
[INFO] [stderr] 96 | pub fn remove<T: AsRef<str>>(specifier: T) -> Result<(), RemoveError> {
[INFO] [stderr]    |                              ^^^^^^^^^ help: consider prefixing with an underscore: `_specifier`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `url`
[INFO] [stderr]    --> src/lib.rs:100:16
[INFO] [stderr]     |
[INFO] [stderr] 100 | pub fn install(url: &str) -> Result<(), InstallError> {
[INFO] [stderr]     |                ^^^ help: consider prefixing with an underscore: `_url`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `specifier`
[INFO] [stderr]   --> src/lib.rs:96:30
[INFO] [stderr]    |
[INFO] [stderr] 96 | pub fn remove<T: AsRef<str>>(specifier: T) -> Result<(), RemoveError> {
[INFO] [stderr]    |                              ^^^^^^^^^ help: consider prefixing with an underscore: `_specifier`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `url`
[INFO] [stderr]    --> src/lib.rs:100:16
[INFO] [stderr]     |
[INFO] [stderr] 100 | pub fn install(url: &str) -> Result<(), InstallError> {
[INFO] [stderr]     |                ^^^ help: consider prefixing with an underscore: `_url`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.92s
[INFO] running `"docker" "inspect" "6a1103d33a001d00b336c758f2b5bb057e5020efe7e52efa449370b91671e5a8"`
[INFO] running `"docker" "rm" "-f" "6a1103d33a001d00b336c758f2b5bb057e5020efe7e52efa449370b91671e5a8"`
[INFO] [stdout] 6a1103d33a001d00b336c758f2b5bb057e5020efe7e52efa449370b91671e5a8