[INFO] updating cached repository hhatto/cargo-strict
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/hhatto/cargo-strict
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/hhatto/cargo-strict" "work/ex/beta-1.38-1/sources/1.37.0/gh/hhatto/cargo-strict"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/hhatto/cargo-strict'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/hhatto/cargo-strict" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hhatto/cargo-strict"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hhatto/cargo-strict'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 75d68cdc1d4efb8519787a0dbdc5c266f7eb9e03
[INFO] sha for GitHub repo hhatto/cargo-strict: 75d68cdc1d4efb8519787a0dbdc5c266f7eb9e03
[INFO] validating manifest of hhatto/cargo-strict on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of hhatto/cargo-strict on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing hhatto/cargo-strict
[INFO] finished frobbing hhatto/cargo-strict
[INFO] frobbed toml for hhatto/cargo-strict written to work/ex/beta-1.38-1/sources/1.37.0/gh/hhatto/cargo-strict/Cargo.toml
[INFO] started frobbing hhatto/cargo-strict
[INFO] finished frobbing hhatto/cargo-strict
[INFO] frobbed toml for hhatto/cargo-strict written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hhatto/cargo-strict/Cargo.toml
[INFO] crate hhatto/cargo-strict already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing hhatto/cargo-strict against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hhatto/cargo-strict:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 7f4a36e82d73af706a72f5abff1335018feb3bf34291e0be905a3cc4e782ce95
[INFO] running `"docker" "start" "-a" "7f4a36e82d73af706a72f5abff1335018feb3bf34291e0be905a3cc4e782ce95"`
[INFO] [stderr]    Compiling libc v0.2.56
[INFO] [stderr]    Compiling difflib v0.4.0
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling cargo-strict v0.1.0 (/opt/crater/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 20.82s
[INFO] running `"docker" "inspect" "7f4a36e82d73af706a72f5abff1335018feb3bf34291e0be905a3cc4e782ce95"`
[INFO] running `"docker" "rm" "-f" "7f4a36e82d73af706a72f5abff1335018feb3bf34291e0be905a3cc4e782ce95"`
[INFO] [stdout] 7f4a36e82d73af706a72f5abff1335018feb3bf34291e0be905a3cc4e782ce95
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hhatto/cargo-strict:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] c7e6f89aa3eb5ab7c3a9cf848c7365430fb80ff7120e150d9e3461b3f21174be
[INFO] running `"docker" "start" "-a" "c7e6f89aa3eb5ab7c3a9cf848c7365430fb80ff7120e150d9e3461b3f21174be"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling cargo-strict v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `ignore`
[INFO] [stderr]  --> examples/simple.rs:5:9
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let ignore = "s.unwrap();";
[INFO] [stderr]   |         ^^^^^^ help: consider prefixing with an underscore: `_ignore`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `"docker" "inspect" "c7e6f89aa3eb5ab7c3a9cf848c7365430fb80ff7120e150d9e3461b3f21174be"`
[INFO] running `"docker" "rm" "-f" "c7e6f89aa3eb5ab7c3a9cf848c7365430fb80ff7120e150d9e3461b3f21174be"`
[INFO] [stdout] c7e6f89aa3eb5ab7c3a9cf848c7365430fb80ff7120e150d9e3461b3f21174be
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hhatto/cargo-strict:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 38c458d39ffe9ce1a6bc9f2b63230e994d2d162a821085d7bf1d31566918d4c7
[INFO] running `"docker" "start" "-a" "38c458d39ffe9ce1a6bc9f2b63230e994d2d162a821085d7bf1d31566918d4c7"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/cargo_strict-e826d08c5e517558
[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" "38c458d39ffe9ce1a6bc9f2b63230e994d2d162a821085d7bf1d31566918d4c7"`
[INFO] running `"docker" "rm" "-f" "38c458d39ffe9ce1a6bc9f2b63230e994d2d162a821085d7bf1d31566918d4c7"`
[INFO] [stdout] 38c458d39ffe9ce1a6bc9f2b63230e994d2d162a821085d7bf1d31566918d4c7