[INFO] cloning repository RyanBluth/dumbbell
[INFO] running `"git" "clone" "--bare" "git://github.com/RyanBluth/dumbbell.git" "work/cache/sources/gh/RyanBluth/dumbbell"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/RyanBluth/dumbbell'...
[INFO] running `"git" "clone" "work/cache/sources/gh/RyanBluth/dumbbell" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/RyanBluth/dumbbell"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/RyanBluth/dumbbell'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/RyanBluth/dumbbell" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/RyanBluth/dumbbell"`
[INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/RyanBluth/dumbbell'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b52cd1b7d30cd50ea05b397b59bfd6988d1b0456
[INFO] sha for GitHub repo RyanBluth/dumbbell: b52cd1b7d30cd50ea05b397b59bfd6988d1b0456
[INFO] validating manifest of RyanBluth/dumbbell on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of RyanBluth/dumbbell on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing RyanBluth/dumbbell
[INFO] finished frobbing RyanBluth/dumbbell
[INFO] frobbed toml for RyanBluth/dumbbell written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/RyanBluth/dumbbell/Cargo.toml
[INFO] started frobbing RyanBluth/dumbbell
[INFO] finished frobbing RyanBluth/dumbbell
[INFO] frobbed toml for RyanBluth/dumbbell written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/RyanBluth/dumbbell/Cargo.toml
[INFO] crate RyanBluth/dumbbell already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] testing RyanBluth/dumbbell against master#c8865d8e195813ade6b84434ac9f8850e7112d1a for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-7/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/RyanBluth/dumbbell:/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=forbid" "-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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "build" "--frozen"`
[INFO] [stdout] 3d868a83a11b92701bd3e67d0ab366cbded9ee41ea26b1df9033b7170f12a7f8
[INFO] running `"docker" "start" "-a" "3d868a83a11b92701bd3e67d0ab366cbded9ee41ea26b1df9033b7170f12a7f8"`
[INFO] [stderr]    Compiling num_cpus v1.2.1
[INFO] [stderr]    Compiling time v0.1.36
[INFO] [stderr]    Compiling url v1.2.4
[INFO] [stderr] warning[E0713]: borrow may still be in use when destructor runs
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/url-1.2.4/src/form_urlencoded.rs:246:40
[INFO] [stderr]     |
[INFO] [stderr] 244 | impl<'a> Target for ::UrlQuery<'a> {
[INFO] [stderr]     |      -- lifetime `'a` defined here
[INFO] [stderr] 245 |     fn as_mut_string(&mut self) -> &mut String { &mut self.url.serialization }
[INFO] [stderr] 246 |     fn finish(self) -> &'a mut ::Url { self.url }
[INFO] [stderr]     |                                        ^^^^^^^^ - here, drop of `self` needs exclusive access to `*self.url`, because the type `UrlQuery<'_>` implements the `Drop` trait
[INFO] [stderr]     |                                        |
[INFO] [stderr]     |                                        returning this value requires that `*self.url` is borrowed for `'a`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this error has been downgraded to a warning for backwards compatibility with previous releases
[INFO] [stderr]     = warning: this represents potential undefined behavior in your code and this warning will become a hard error in the future
[INFO] [stderr]     = note: for more information, try `rustc --explain E0729`
[INFO] [stderr] 
[INFO] [stderr]    Compiling hyper v0.10.0
[INFO] [stderr]    Compiling dumbbell v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `hyper::Client`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use hyper::Client;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SubCommand`
[INFO] [stderr]  --> src/main.rs:5:22
[INFO] [stderr]   |
[INFO] [stderr] 5 | use clap::{Arg, App, SubCommand, ArgMatches};
[INFO] [stderr]   |                      ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/main.rs:21:13
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn from(err: std::num::ParseIntError) -> TaskError {
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.62s
[INFO] running `"docker" "inspect" "3d868a83a11b92701bd3e67d0ab366cbded9ee41ea26b1df9033b7170f12a7f8"`
[INFO] running `"docker" "rm" "-f" "3d868a83a11b92701bd3e67d0ab366cbded9ee41ea26b1df9033b7170f12a7f8"`
[INFO] [stdout] 3d868a83a11b92701bd3e67d0ab366cbded9ee41ea26b1df9033b7170f12a7f8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-7/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/RyanBluth/dumbbell:/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=forbid" "-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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 1b1002cdfffb91f434f984dc424e95f25f02c1f3c21034e6fc4382ee6cc5a3df
[INFO] running `"docker" "start" "-a" "1b1002cdfffb91f434f984dc424e95f25f02c1f3c21034e6fc4382ee6cc5a3df"`
[INFO] [stderr]    Compiling dumbbell v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `hyper::Client`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use hyper::Client;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `SubCommand`
[INFO] [stderr]  --> src/main.rs:5:22
[INFO] [stderr]   |
[INFO] [stderr] 5 | use clap::{Arg, App, SubCommand, ArgMatches};
[INFO] [stderr]   |                      ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `err`
[INFO] [stderr]   --> src/main.rs:21:13
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn from(err: std::num::ParseIntError) -> TaskError {
[INFO] [stderr]    |             ^^^ help: consider prefixing with an underscore: `_err`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.17s
[INFO] running `"docker" "inspect" "1b1002cdfffb91f434f984dc424e95f25f02c1f3c21034e6fc4382ee6cc5a3df"`
[INFO] running `"docker" "rm" "-f" "1b1002cdfffb91f434f984dc424e95f25f02c1f3c21034e6fc4382ee6cc5a3df"`
[INFO] [stdout] 1b1002cdfffb91f434f984dc424e95f25f02c1f3c21034e6fc4382ee6cc5a3df
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-7/master#c8865d8e195813ade6b84434ac9f8850e7112d1a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/RyanBluth/dumbbell:/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=forbid" "-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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "test" "--frozen"`
[INFO] [stdout] 23642bcbdd3845175ddf39d941b578e72ca2d1eebdfb6f911f934dba7e7b7247
[INFO] running `"docker" "start" "-a" "23642bcbdd3845175ddf39d941b578e72ca2d1eebdfb6f911f934dba7e7b7247"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/dumbbell-b4f9d558d58711fb
[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" "23642bcbdd3845175ddf39d941b578e72ca2d1eebdfb6f911f934dba7e7b7247"`
[INFO] running `"docker" "rm" "-f" "23642bcbdd3845175ddf39d941b578e72ca2d1eebdfb6f911f934dba7e7b7247"`
[INFO] [stdout] 23642bcbdd3845175ddf39d941b578e72ca2d1eebdfb6f911f934dba7e7b7247