[INFO] crate cargo-app 0.1.0 is already in cache
[INFO] extracting crate cargo-app 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/cargo-app/0.1.0
[INFO] extracting crate cargo-app 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/cargo-app/0.1.0
[INFO] validating manifest of cargo-app-0.1.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of cargo-app-0.1.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing cargo-app-0.1.0
[INFO] finished frobbing cargo-app-0.1.0
[INFO] frobbed toml for cargo-app-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/cargo-app/0.1.0/Cargo.toml
[INFO] started frobbing cargo-app-0.1.0
[INFO] finished frobbing cargo-app-0.1.0
[INFO] frobbed toml for cargo-app-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/cargo-app/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing cargo-app-0.1.0 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/cargo-app/0.1.0:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] a6fd5b7010af6878a42f2699493c6cd5ce5342ad0be9155cac393b539b34dbda
[INFO] running `"docker" "start" "-a" "a6fd5b7010af6878a42f2699493c6cd5ce5342ad0be9155cac393b539b34dbda"`
[INFO] [stderr]    Compiling plist v0.3.0
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling textwrap v0.10.0
[INFO] [stderr]    Compiling xml-rs v0.7.0
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling packapp v0.1.3
[INFO] [stderr]    Compiling cargo-app v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Serialize`
[INFO] [stderr]  --> src/main.rs:4:26
[INFO] [stderr]   |
[INFO] [stderr] 4 | use serde::{Deserialize, Serialize};
[INFO] [stderr]   |                          ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Arg`
[INFO] [stderr]  --> src/main.rs:5:30
[INFO] [stderr]   |
[INFO] [stderr] 5 | use clap::{App, AppSettings, Arg, SubCommand};
[INFO] [stderr]   |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/utils.rs:67:50
[INFO] [stderr]    |
[INFO] [stderr] 67 |     return fs::read_to_string(file).unwrap_or_else(|s| {
[INFO] [stderr]    |                                                     ^ help: consider prefixing with an underscore: `_s`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `exists`
[INFO] [stderr]   --> src/utils.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn exists(path: &str) -> bool {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `assert_exist`
[INFO] [stderr]   --> src/utils.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn assert_exist(path: &str) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `assert_ext`
[INFO] [stderr]   --> src/utils.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn assert_ext(path: &str, expected_ext: &str) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mkdir`
[INFO] [stderr]   --> src/utils.rs:35:1
[INFO] [stderr]    |
[INFO] [stderr] 35 | pub fn mkdir(dir: &str) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `copy`
[INFO] [stderr]   --> src/utils.rs:45:1
[INFO] [stderr]    |
[INFO] [stderr] 45 | pub fn copy(f1: &str, f2: &str) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `write`
[INFO] [stderr]   --> src/utils.rs:55:1
[INFO] [stderr]    |
[INFO] [stderr] 55 | pub fn write(file: &str, content: &str) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.83s
[INFO] running `"docker" "inspect" "a6fd5b7010af6878a42f2699493c6cd5ce5342ad0be9155cac393b539b34dbda"`
[INFO] running `"docker" "rm" "-f" "a6fd5b7010af6878a42f2699493c6cd5ce5342ad0be9155cac393b539b34dbda"`
[INFO] [stdout] a6fd5b7010af6878a42f2699493c6cd5ce5342ad0be9155cac393b539b34dbda
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/cargo-app/0.1.0:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 224861f4ed7a4220d667610bb46f41fbab5df43fb76ac0881cdce64931086f3f
[INFO] running `"docker" "start" "-a" "224861f4ed7a4220d667610bb46f41fbab5df43fb76ac0881cdce64931086f3f"`
[INFO] [stderr]    Compiling cargo-app v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Serialize`
[INFO] [stderr]  --> src/main.rs:4:26
[INFO] [stderr]   |
[INFO] [stderr] 4 | use serde::{Deserialize, Serialize};
[INFO] [stderr]   |                          ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Arg`
[INFO] [stderr]  --> src/main.rs:5:30
[INFO] [stderr]   |
[INFO] [stderr] 5 | use clap::{App, AppSettings, Arg, SubCommand};
[INFO] [stderr]   |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]   --> src/utils.rs:67:50
[INFO] [stderr]    |
[INFO] [stderr] 67 |     return fs::read_to_string(file).unwrap_or_else(|s| {
[INFO] [stderr]    |                                                     ^ help: consider prefixing with an underscore: `_s`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `exists`
[INFO] [stderr]   --> src/utils.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub fn exists(path: &str) -> bool {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `assert_exist`
[INFO] [stderr]   --> src/utils.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub fn assert_exist(path: &str) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `assert_ext`
[INFO] [stderr]   --> src/utils.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | pub fn assert_ext(path: &str, expected_ext: &str) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mkdir`
[INFO] [stderr]   --> src/utils.rs:35:1
[INFO] [stderr]    |
[INFO] [stderr] 35 | pub fn mkdir(dir: &str) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `copy`
[INFO] [stderr]   --> src/utils.rs:45:1
[INFO] [stderr]    |
[INFO] [stderr] 45 | pub fn copy(f1: &str, f2: &str) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `write`
[INFO] [stderr]   --> src/utils.rs:55:1
[INFO] [stderr]    |
[INFO] [stderr] 55 | pub fn write(file: &str, content: &str) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
[INFO] running `"docker" "inspect" "224861f4ed7a4220d667610bb46f41fbab5df43fb76ac0881cdce64931086f3f"`
[INFO] running `"docker" "rm" "-f" "224861f4ed7a4220d667610bb46f41fbab5df43fb76ac0881cdce64931086f3f"`
[INFO] [stdout] 224861f4ed7a4220d667610bb46f41fbab5df43fb76ac0881cdce64931086f3f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/cargo-app/0.1.0:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 065a472f2504070c3b502842f183884cdb860b9c6c78da5a55539610490edb57
[INFO] running `"docker" "start" "-a" "065a472f2504070c3b502842f183884cdb860b9c6c78da5a55539610490edb57"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/cargo_app-1d3d4c045942b4f1
[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" "065a472f2504070c3b502842f183884cdb860b9c6c78da5a55539610490edb57"`
[INFO] running `"docker" "rm" "-f" "065a472f2504070c3b502842f183884cdb860b9c6c78da5a55539610490edb57"`
[INFO] [stdout] 065a472f2504070c3b502842f183884cdb860b9c6c78da5a55539610490edb57