[INFO] crate stamm 0.2.0 is already in cache
[INFO] testing stamm-0.2.0 against beta-2019-09-28 for beta-1.39-1
[INFO] extracting crate stamm 0.2.0 into work/builds/worker-7/source
[INFO] validating manifest of crates.io crate stamm 0.2.0 on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate stamm 0.2.0
[INFO] finished tweaking crates.io crate stamm 0.2.0
[INFO] tweaked toml for crates.io crate stamm 0.2.0 written to work/builds/worker-7/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "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" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] ff5c8f8c4501a402a7b859881626819a36a2d7eea8e241350ee5cfaea523c3f7
[INFO] running `"docker" "start" "-a" "ff5c8f8c4501a402a7b859881626819a36a2d7eea8e241350ee5cfaea523c3f7"`
[INFO] [stderr]    Compiling stamm v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.27s
[INFO] running `"docker" "inspect" "ff5c8f8c4501a402a7b859881626819a36a2d7eea8e241350ee5cfaea523c3f7"`
[INFO] running `"docker" "rm" "-f" "ff5c8f8c4501a402a7b859881626819a36a2d7eea8e241350ee5cfaea523c3f7"`
[INFO] [stdout] ff5c8f8c4501a402a7b859881626819a36a2d7eea8e241350ee5cfaea523c3f7
[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" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] f38acc81ebfa9ddd293b83d7e8bcd0d237344947821071e5912b6267c163b85b
[INFO] running `"docker" "start" "-a" "f38acc81ebfa9ddd293b83d7e8bcd0d237344947821071e5912b6267c163b85b"`
[INFO] [stderr]    Compiling stamm v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> examples/numeric_tree_example.rs:15:23
[INFO] [stderr]    |
[INFO] [stderr] 15 |     let mut f: File = try!(File::create(filename));
[INFO] [stderr]    |                       ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the item `Write` is imported redundantly
[INFO] [stderr]   --> examples/numeric_tree_example.rs:14:9
[INFO] [stderr]    |
[INFO] [stderr] 7  | use std::io::{stdin, stdout, Write};
[INFO] [stderr]    |                              ----- the item `Write` is already imported here
[INFO] [stderr] ...
[INFO] [stderr] 14 |     use std::io::Write;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.81s
[INFO] running `"docker" "inspect" "f38acc81ebfa9ddd293b83d7e8bcd0d237344947821071e5912b6267c163b85b"`
[INFO] running `"docker" "rm" "-f" "f38acc81ebfa9ddd293b83d7e8bcd0d237344947821071e5912b6267c163b85b"`
[INFO] [stdout] f38acc81ebfa9ddd293b83d7e8bcd0d237344947821071e5912b6267c163b85b
[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" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] d957d86cbe3e0ba133d182c162529518a1cf286372976c70027028931f4c6324
[INFO] running `"docker" "start" "-a" "d957d86cbe3e0ba133d182c162529518a1cf286372976c70027028931f4c6324"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/stamm-57c8605d8e6ce35e
[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] [stderr]    Doc-tests stamm
[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" "d957d86cbe3e0ba133d182c162529518a1cf286372976c70027028931f4c6324"`
[INFO] running `"docker" "rm" "-f" "d957d86cbe3e0ba133d182c162529518a1cf286372976c70027028931f4c6324"`
[INFO] [stdout] d957d86cbe3e0ba133d182c162529518a1cf286372976c70027028931f4c6324