[INFO] fetching crate mammut 0.13.0...
[INFO] checking mammut-0.13.0 against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] extracting crate mammut 0.13.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate mammut 0.13.0 on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "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 /workspace/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 `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4e0ea1ec484a13c765722e5a3057897f37aa98b548667d6cb8fa0c129ebea754
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "4e0ea1ec484a13c765722e5a3057897f37aa98b548667d6cb8fa0c129ebea754"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking futures v0.1.28
[INFO] [stderr]    Compiling encoding_rs v0.8.17
[INFO] [stderr]    Compiling hyperx v0.15.1
[INFO] [stderr]    Compiling unicase v2.4.0
[INFO] [stderr]    Compiling hyper v0.12.33
[INFO] [stderr]     Checking backtrace-sys v0.1.31
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]     Checking openssl v0.10.24
[INFO] [stderr]     Checking backtrace v0.3.35
[INFO] [stderr]     Checking error-chain v0.12.1
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking publicsuffix v1.5.3
[INFO] [stderr]     Checking mime v0.3.13
[INFO] [stderr]    Compiling mime_guess v2.0.1
[INFO] [stderr]     Checking tokio-executor v0.1.8
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking tokio-sync v0.1.6
[INFO] [stderr]     Checking tokio-buf v0.1.1
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking tokio-timer v0.2.11
[INFO] [stderr]     Checking tokio-threadpool v0.1.15
[INFO] [stderr]     Checking tokio-current-thread v0.1.6
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking native-tls v0.2.3
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]    Compiling serde_derive v1.0.99
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking serde v1.0.99
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking serde_urlencoded v0.5.5
[INFO] [stderr]     Checking chrono v0.4.7
[INFO] [stderr]     Checking toml v0.5.3
[INFO] [stderr]     Checking cookie_store v0.7.0
[INFO] [stderr]     Checking reqwest v0.9.20
[INFO] [stderr]     Checking 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/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[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: build failed
[INFO] running `"docker" "inspect" "4e0ea1ec484a13c765722e5a3057897f37aa98b548667d6cb8fa0c129ebea754"`
[INFO] running `"docker" "rm" "-f" "4e0ea1ec484a13c765722e5a3057897f37aa98b548667d6cb8fa0c129ebea754"`
[INFO] [stdout] 4e0ea1ec484a13c765722e5a3057897f37aa98b548667d6cb8fa0c129ebea754