[INFO] crate preftool-app-config 0.2.0 is already in cache
[INFO] extracting crate preftool-app-config 0.2.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/preftool-app-config/0.2.0
[INFO] extracting crate preftool-app-config 0.2.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/preftool-app-config/0.2.0
[INFO] validating manifest of preftool-app-config-0.2.0 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 preftool-app-config-0.2.0 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 preftool-app-config-0.2.0
[INFO] finished frobbing preftool-app-config-0.2.0
[INFO] frobbed toml for preftool-app-config-0.2.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/preftool-app-config/0.2.0/Cargo.toml
[INFO] started frobbing preftool-app-config-0.2.0
[INFO] finished frobbing preftool-app-config-0.2.0
[INFO] frobbed toml for preftool-app-config-0.2.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/preftool-app-config/0.2.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 preftool-app-config-0.2.0 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-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/preftool-app-config/0.2.0:/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] e1333e53a5dc889f8985e48cccb99cdf8eabf502ad2eeb76a22e2d908e649608
[INFO] running `"docker" "start" "-a" "e1333e53a5dc889f8985e48cccb99cdf8eabf502ad2eeb76a22e2d908e649608"`
[INFO] [stderr]    Compiling preftool-clap v0.2.0
[INFO] [stderr]    Compiling preftool-env v0.2.0
[INFO] [stderr]    Compiling preftool-toml v0.2.0
[INFO] [stderr]    Compiling preftool-app-config v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:151:19
[INFO] [stderr]     |
[INFO] [stderr] 151 |   type Iter = Box<Iterator<Item = ConfigPath> + 'static>;
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = ConfigPath> + 'static`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.71s
[INFO] running `"docker" "inspect" "e1333e53a5dc889f8985e48cccb99cdf8eabf502ad2eeb76a22e2d908e649608"`
[INFO] running `"docker" "rm" "-f" "e1333e53a5dc889f8985e48cccb99cdf8eabf502ad2eeb76a22e2d908e649608"`
[INFO] [stdout] e1333e53a5dc889f8985e48cccb99cdf8eabf502ad2eeb76a22e2d908e649608
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/preftool-app-config/0.2.0:/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] 35a58e6b72109c9d068486ee3b629c7e9523f6cb247b1720020592c8fff0a11c
[INFO] running `"docker" "start" "-a" "35a58e6b72109c9d068486ee3b629c7e9523f6cb247b1720020592c8fff0a11c"`
[INFO] [stderr]    Compiling slog-async v2.3.0
[INFO] [stderr]    Compiling slog-kvfilter v0.7.0
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling trackable_derive v0.1.2
[INFO] [stderr]    Compiling slog-term v2.4.1
[INFO] [stderr]    Compiling preftool-clap-derive v0.2.0
[INFO] [stderr]    Compiling trackable v0.2.23
[INFO] [stderr]    Compiling sloggers v0.3.3
[INFO] [stderr]    Compiling preftool-app-config v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/lib.rs:151:19
[INFO] [stderr]     |
[INFO] [stderr] 151 |   type Iter = Box<Iterator<Item = ConfigPath> + 'static>;
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item = ConfigPath> + 'static`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `preftool_clap`
[INFO] [stderr]  --> examples/simple/main.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use preftool_clap::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `host`
[INFO] [stderr]   --> examples/simple/main.rs:17:3
[INFO] [stderr]    |
[INFO] [stderr] 17 |   host: String,
[INFO] [stderr]    |   ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `port`
[INFO] [stderr]   --> examples/simple/main.rs:20:3
[INFO] [stderr]    |
[INFO] [stderr] 20 |   port: usize,
[INFO] [stderr]    |   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `cert`
[INFO] [stderr]   --> examples/simple/main.rs:23:3
[INFO] [stderr]    |
[INFO] [stderr] 23 |   cert: Option<String>,
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.21s
[INFO] running `"docker" "inspect" "35a58e6b72109c9d068486ee3b629c7e9523f6cb247b1720020592c8fff0a11c"`
[INFO] running `"docker" "rm" "-f" "35a58e6b72109c9d068486ee3b629c7e9523f6cb247b1720020592c8fff0a11c"`
[INFO] [stdout] 35a58e6b72109c9d068486ee3b629c7e9523f6cb247b1720020592c8fff0a11c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/preftool-app-config/0.2.0:/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] e3cde550f2cb1066fec8b004bd6b79bc49b2c8980883d58b2e30bcc73cd6fa4e
[INFO] running `"docker" "start" "-a" "e3cde550f2cb1066fec8b004bd6b79bc49b2c8980883d58b2e30bcc73cd6fa4e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/preftool_app_config-64e3a18cfc9d5639
[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 preftool-app-config
[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" "e3cde550f2cb1066fec8b004bd6b79bc49b2c8980883d58b2e30bcc73cd6fa4e"`
[INFO] running `"docker" "rm" "-f" "e3cde550f2cb1066fec8b004bd6b79bc49b2c8980883d58b2e30bcc73cd6fa4e"`
[INFO] [stdout] e3cde550f2cb1066fec8b004bd6b79bc49b2c8980883d58b2e30bcc73cd6fa4e