[INFO] updating cached repository Jaco26/playing-with-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Jaco26/playing-with-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Jaco26/playing-with-rust" "work/ex/beta-1.38-1/sources/1.37.0/gh/Jaco26/playing-with-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/Jaco26/playing-with-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Jaco26/playing-with-rust" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Jaco26/playing-with-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Jaco26/playing-with-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f52c2a75bb27da4f1d10e8a5210165adec4db3d3
[INFO] sha for GitHub repo Jaco26/playing-with-rust: f52c2a75bb27da4f1d10e8a5210165adec4db3d3
[INFO] validating manifest of Jaco26/playing-with-rust 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 Jaco26/playing-with-rust 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 Jaco26/playing-with-rust
[INFO] finished frobbing Jaco26/playing-with-rust
[INFO] frobbed toml for Jaco26/playing-with-rust written to work/ex/beta-1.38-1/sources/1.37.0/gh/Jaco26/playing-with-rust/Cargo.toml
[INFO] started frobbing Jaco26/playing-with-rust
[INFO] finished frobbing Jaco26/playing-with-rust
[INFO] frobbed toml for Jaco26/playing-with-rust written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/Jaco26/playing-with-rust/Cargo.toml
[INFO] crate Jaco26/playing-with-rust 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 Jaco26/playing-with-rust against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Jaco26/playing-with-rust:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] e6ff7eb7222d38af7edf6f4cea18934fad5d4b0aa4518a5dd82daf10c9e33b7b
[INFO] running `"docker" "start" "-a" "e6ff7eb7222d38af7edf6f4cea18934fad5d4b0aa4518a5dd82daf10c9e33b7b"`
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling uuid v0.7.4
[INFO] [stderr]    Compiling todo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/arguments.rs:5:15
[INFO] [stderr]   |
[INFO] [stderr] 5 |   action: Box<Fn()>,
[INFO] [stderr]   |               ^^^^ help: use `dyn`: `dyn Fn()`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/arguments.rs:18:56
[INFO] [stderr]    |
[INFO] [stderr] 18 |   pub fn add_arg(&mut self, pattern: &str, action: Box<Fn()>) {
[INFO] [stderr]    |                                                        ^^^^ help: use `dyn`: `dyn Fn()`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/arguments.rs:24:21
[INFO] [stderr]    |
[INFO] [stderr] 24 |   pub fn parse_args(args: std::env::Args) {
[INFO] [stderr]    |                     ^^^^ help: consider prefixing with an underscore: `_args`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `format_pretty`
[INFO] [stderr]   --> src/todo_item.rs:64:3
[INFO] [stderr]    |
[INFO] [stderr] 64 |   pub fn format_pretty(&self) -> String {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Arg`
[INFO] [stderr]  --> src/arguments.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct Arg {
[INFO] [stderr]   | ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Arguments`
[INFO] [stderr]  --> src/arguments.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub struct Arguments {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/arguments.rs:13:3
[INFO] [stderr]    |
[INFO] [stderr] 13 |   pub fn new() -> Arguments {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add_arg`
[INFO] [stderr]   --> src/arguments.rs:18:3
[INFO] [stderr]    |
[INFO] [stderr] 18 |   pub fn add_arg(&mut self, pattern: &str, action: Box<Fn()>) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_args`
[INFO] [stderr]   --> src/arguments.rs:24:3
[INFO] [stderr]    |
[INFO] [stderr] 24 |   pub fn parse_args(args: std::env::Args) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.25s
[INFO] running `"docker" "inspect" "e6ff7eb7222d38af7edf6f4cea18934fad5d4b0aa4518a5dd82daf10c9e33b7b"`
[INFO] running `"docker" "rm" "-f" "e6ff7eb7222d38af7edf6f4cea18934fad5d4b0aa4518a5dd82daf10c9e33b7b"`
[INFO] [stdout] e6ff7eb7222d38af7edf6f4cea18934fad5d4b0aa4518a5dd82daf10c9e33b7b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Jaco26/playing-with-rust:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] a34d9f88c499fae008ff77cce1a026ab50c3208fdaf670559196dd2054ff5ad8
[INFO] running `"docker" "start" "-a" "a34d9f88c499fae008ff77cce1a026ab50c3208fdaf670559196dd2054ff5ad8"`
[INFO] [stderr]    Compiling todo v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/arguments.rs:5:15
[INFO] [stderr]   |
[INFO] [stderr] 5 |   action: Box<Fn()>,
[INFO] [stderr]   |               ^^^^ help: use `dyn`: `dyn Fn()`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/arguments.rs:18:56
[INFO] [stderr]    |
[INFO] [stderr] 18 |   pub fn add_arg(&mut self, pattern: &str, action: Box<Fn()>) {
[INFO] [stderr]    |                                                        ^^^^ help: use `dyn`: `dyn Fn()`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/arguments.rs:24:21
[INFO] [stderr]    |
[INFO] [stderr] 24 |   pub fn parse_args(args: std::env::Args) {
[INFO] [stderr]    |                     ^^^^ help: consider prefixing with an underscore: `_args`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `format_pretty`
[INFO] [stderr]   --> src/todo_item.rs:64:3
[INFO] [stderr]    |
[INFO] [stderr] 64 |   pub fn format_pretty(&self) -> String {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Arg`
[INFO] [stderr]  --> src/arguments.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct Arg {
[INFO] [stderr]   | ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Arguments`
[INFO] [stderr]  --> src/arguments.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub struct Arguments {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/arguments.rs:13:3
[INFO] [stderr]    |
[INFO] [stderr] 13 |   pub fn new() -> Arguments {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add_arg`
[INFO] [stderr]   --> src/arguments.rs:18:3
[INFO] [stderr]    |
[INFO] [stderr] 18 |   pub fn add_arg(&mut self, pattern: &str, action: Box<Fn()>) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_args`
[INFO] [stderr]   --> src/arguments.rs:24:3
[INFO] [stderr]    |
[INFO] [stderr] 24 |   pub fn parse_args(args: std::env::Args) {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.96s
[INFO] running `"docker" "inspect" "a34d9f88c499fae008ff77cce1a026ab50c3208fdaf670559196dd2054ff5ad8"`
[INFO] running `"docker" "rm" "-f" "a34d9f88c499fae008ff77cce1a026ab50c3208fdaf670559196dd2054ff5ad8"`
[INFO] [stdout] a34d9f88c499fae008ff77cce1a026ab50c3208fdaf670559196dd2054ff5ad8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/Jaco26/playing-with-rust:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 60772c7003fe002561a8f26553aa9cf829be341e02d904b57080be760b28219e
[INFO] running `"docker" "start" "-a" "60772c7003fe002561a8f26553aa9cf829be341e02d904b57080be760b28219e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/todo-e30867565eddeeda
[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]      Running /opt/crater/target/debug/deps/todo-04743029c22a02a9
[INFO] [stderr]    Doc-tests todo
[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] [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" "60772c7003fe002561a8f26553aa9cf829be341e02d904b57080be760b28219e"`
[INFO] running `"docker" "rm" "-f" "60772c7003fe002561a8f26553aa9cf829be341e02d904b57080be760b28219e"`
[INFO] [stdout] 60772c7003fe002561a8f26553aa9cf829be341e02d904b57080be760b28219e