[INFO] updating cached repository https://github.com/lfitchett/learningRust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/lfitchett/learningRust
[INFO] [stderr]    884f92c..6883d60  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6883d60b8058eb2458239197e6b39596656e074c
[INFO] testing lfitchett/learningRust against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Flfitchett%2FlearningRust" "work/builds/worker-5/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lfitchett/learningRust 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 git repo https://github.com/lfitchett/learningRust
[INFO] finished tweaking git repo https://github.com/lfitchett/learningRust
[INFO] tweaked toml for git repo https://github.com/lfitchett/learningRust written to work/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/lfitchett/learningRust 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-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/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] d5c68a610a41056b8b2a1c07df7e274298f5838eaf23c1c3b1fe9fe2ae2c6f06
[INFO] running `"docker" "start" "-a" "d5c68a610a41056b8b2a1c07df7e274298f5838eaf23c1c3b1fe9fe2ae2c6f06"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.61
[INFO] [stderr]    Compiling doc-comment v0.3.1
[INFO] [stderr]    Compiling sysinfo v0.9.5
[INFO] [stderr]    Compiling linked-list v0.0.3
[INFO] [stderr]    Compiling num-bigint v0.2.3
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling ndarray v0.12.1
[INFO] [stderr]    Compiling num_cpus v1.10.1
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling rayon-core v1.6.0
[INFO] [stderr]    Compiling chrono v0.4.7
[INFO] [stderr]    Compiling num v0.2.0
[INFO] [stderr]    Compiling rayon v1.2.0
[INFO] [stderr]    Compiling parse_duration v2.0.1
[INFO] [stderr]    Compiling playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `chrono::*`
[INFO] [stderr]  --> src/future.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use chrono::*;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.65s
[INFO] running `"docker" "inspect" "d5c68a610a41056b8b2a1c07df7e274298f5838eaf23c1c3b1fe9fe2ae2c6f06"`
[INFO] running `"docker" "rm" "-f" "d5c68a610a41056b8b2a1c07df7e274298f5838eaf23c1c3b1fe9fe2ae2c6f06"`
[INFO] [stdout] d5c68a610a41056b8b2a1c07df7e274298f5838eaf23c1c3b1fe9fe2ae2c6f06
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/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] 48062e003881c7b35bad36fef636c1b5d2ebed0fd4a4726bd85014175bbceadf
[INFO] running `"docker" "start" "-a" "48062e003881c7b35bad36fef636c1b5d2ebed0fd4a4726bd85014175bbceadf"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling playground v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `chrono::*`
[INFO] [stderr]  --> src/future.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use chrono::*;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `"docker" "inspect" "48062e003881c7b35bad36fef636c1b5d2ebed0fd4a4726bd85014175bbceadf"`
[INFO] running `"docker" "rm" "-f" "48062e003881c7b35bad36fef636c1b5d2ebed0fd4a4726bd85014175bbceadf"`
[INFO] [stdout] 48062e003881c7b35bad36fef636c1b5d2ebed0fd4a4726bd85014175bbceadf
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/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"`
[INFO] [stdout] 73efe5a8a048f7ba735a4ee89bfaf19f1f5ede83bb3e5ab4fcccec38486a8f33
[INFO] running `"docker" "start" "-a" "73efe5a8a048f7ba735a4ee89bfaf19f1f5ede83bb3e5ab4fcccec38486a8f33"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/playground-24cc8d6fc81cc06f
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "73efe5a8a048f7ba735a4ee89bfaf19f1f5ede83bb3e5ab4fcccec38486a8f33"`
[INFO] running `"docker" "rm" "-f" "73efe5a8a048f7ba735a4ee89bfaf19f1f5ede83bb3e5ab4fcccec38486a8f33"`
[INFO] [stdout] 73efe5a8a048f7ba735a4ee89bfaf19f1f5ede83bb3e5ab4fcccec38486a8f33