[INFO] crate mammut 0.13.0 is already in cache
[INFO] testing mammut-0.13.0 against 1.38.0 for beta-1.39-1
[INFO] extracting crate mammut 0.13.0 into work/builds/worker-7/source
[INFO] validating manifest of crates.io crate mammut 0.13.0 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate mammut 0.13.0
[INFO] finished tweaking crates.io crate mammut 0.13.0
[INFO] tweaked toml for crates.io crate mammut 0.13.0 written to work/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate mammut 0.13.0 already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 060efaed3f2d8273dafd3f74c420c9b202f4fbe95e54acbbb4d961df408b6b40
[INFO] running `"docker" "start" "-a" "060efaed3f2d8273dafd3f74c420c9b202f4fbe95e54acbbb4d961df408b6b40"`
[INFO] [stderr]    Compiling hyperx v0.15.1
[INFO] [stderr]    Compiling doc-comment v0.3.1
[INFO] [stderr]    Compiling openssl-sys v0.9.49
[INFO] [stderr]    Compiling want v0.2.0
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling flate2 v1.0.11
[INFO] [stderr]    Compiling tokio-io v0.1.12
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.2
[INFO] [stderr]    Compiling crossbeam-deque v0.7.1
[INFO] [stderr]    Compiling parking_lot v0.7.1
[INFO] [stderr]    Compiling h2 v0.1.26
[INFO] [stderr]    Compiling tokio-threadpool v0.1.15
[INFO] [stderr]    Compiling tokio-reactor v0.1.9
[INFO] [stderr]    Compiling openssl v0.10.24
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling tokio v0.1.22
[INFO] [stderr]    Compiling hyper v0.12.33
[INFO] [stderr]    Compiling serde_derive v1.0.99
[INFO] [stderr]    Compiling hyper-tls v0.3.2
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]    Compiling serde_json v1.0.40
[INFO] [stderr]    Compiling serde_urlencoded v0.5.5
[INFO] [stderr]    Compiling chrono v0.4.7
[INFO] [stderr]    Compiling cookie_store v0.7.0
[INFO] [stderr]    Compiling reqwest v0.9.20
[INFO] [stderr]    Compiling mammut v0.13.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.94s
[INFO] running `"docker" "inspect" "060efaed3f2d8273dafd3f74c420c9b202f4fbe95e54acbbb4d961df408b6b40"`
[INFO] running `"docker" "rm" "-f" "060efaed3f2d8273dafd3f74c420c9b202f4fbe95e54acbbb4d961df408b6b40"`
[INFO] [stdout] 060efaed3f2d8273dafd3f74c420c9b202f4fbe95e54acbbb4d961df408b6b40
[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" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] e418a2434b7a52ae0bd233163f84d536c2d7353eeae6ab8cca573c0ba9bc4e97
[INFO] running `"docker" "start" "-a" "e418a2434b7a52ae0bd233163f84d536c2d7353eeae6ab8cca573c0ba9bc4e97"`
[INFO] [stderr]    Compiling toml v0.5.3
[INFO] [stderr]    Compiling mammut v0.13.0 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `error`
[INFO] [stderr]  --> examples/print_your_profile.rs:3:33
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn main() -> Result<(), Box<dyn error::Error>> {
[INFO] [stderr]   |                                 ^^^^^ use of undeclared type or module `error`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] error: Could not compile `mammut`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `error`
[INFO] [stderr]  --> examples/search.rs:3:33
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn main() -> Result<(), Box<dyn error::Error>> {
[INFO] [stderr]   |                                 ^^^^^ use of undeclared type or module `error`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] error: Could not compile `mammut`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `error`
[INFO] [stderr]  --> examples/follow_profile.rs:3:33
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn main() -> Result<(), Box<dyn error::Error>> {
[INFO] [stderr]   |                                 ^^^^^ use of undeclared type or module `error`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0433`.
[INFO] [stderr] error: Could not compile `mammut`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "e418a2434b7a52ae0bd233163f84d536c2d7353eeae6ab8cca573c0ba9bc4e97"`
[INFO] running `"docker" "rm" "-f" "e418a2434b7a52ae0bd233163f84d536c2d7353eeae6ab8cca573c0ba9bc4e97"`
[INFO] [stdout] e418a2434b7a52ae0bd233163f84d536c2d7353eeae6ab8cca573c0ba9bc4e97