[INFO] fetching crate gitdb 0.1.1...
[INFO] testing gitdb-0.1.1 against beta-2021-09-08 for beta-1.56-1
[INFO] extracting crate gitdb 0.1.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate gitdb 0.1.1 on toolchain beta-2021-09-08
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gitdb 0.1.1
[INFO] finished tweaking crates.io crate gitdb 0.1.1
[INFO] tweaked toml for crates.io crate gitdb 0.1.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-09-08" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded git2 v0.6.11
[INFO] [stderr]   Downloaded libgit2-sys v0.6.19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04d5c9048de2bdf8801dcca6681d6417025966c89ddd6216c4ad31a744a08993
[INFO] running `Command { std: "docker" "start" "-a" "04d5c9048de2bdf8801dcca6681d6417025966c89ddd6216c4ad31a744a08993", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04d5c9048de2bdf8801dcca6681d6417025966c89ddd6216c4ad31a744a08993", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04d5c9048de2bdf8801dcca6681d6417025966c89ddd6216c4ad31a744a08993", kill_on_drop: false }`
[INFO] [stdout] 04d5c9048de2bdf8801dcca6681d6417025966c89ddd6216c4ad31a744a08993
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b29ad79061372ae67ba7f1d0b27e4d291e2dcd12cb228f6bb24951dd096027e8
[INFO] running `Command { std: "docker" "start" "-a" "b29ad79061372ae67ba7f1d0b27e4d291e2dcd12cb228f6bb24951dd096027e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling bitflags v0.9.1
[INFO] [stderr]    Compiling untrusted v0.6.2
[INFO] [stderr]    Compiling data-encoding v2.3.2
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]    Compiling curl-sys v0.4.45+curl-7.78.0
[INFO] [stderr]    Compiling libssh2-sys v0.2.21
[INFO] [stderr]    Compiling openssl-sys v0.9.66
[INFO] [stderr]    Compiling libgit2-sys v0.6.19
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling git2 v0.6.11
[INFO] [stderr]    Compiling gitdb v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `obscure_input`
[INFO] [stdout]    --> src/crypto.rs:203:33
[INFO] [stdout]     |
[INFO] [stdout] 203 | pub fn read_stdin(prompt: &str, obscure_input: bool) -> Result<String, String> {
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_obscure_input`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/git_db.rs:365:9
[INFO] [stdout]     |
[INFO] [stdout] 365 | /         &self.repo.checkout_head(None)
[INFO] [stdout] 366 | |             .map_err(|e| format!("Failed to checkout head: {:?}", e))?;
[INFO] [stdout]     | |______________________________________________________________________^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 365 |         let _ = &self.repo.checkout_head(None)
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.93s
[INFO] running `Command { std: "docker" "inspect" "b29ad79061372ae67ba7f1d0b27e4d291e2dcd12cb228f6bb24951dd096027e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b29ad79061372ae67ba7f1d0b27e4d291e2dcd12cb228f6bb24951dd096027e8", kill_on_drop: false }`
[INFO] [stdout] b29ad79061372ae67ba7f1d0b27e4d291e2dcd12cb228f6bb24951dd096027e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dabcea3eed4a35ce6bdfdfe23fb21b2162b05b754edabda093d24670f4c61ec2
[INFO] running `Command { std: "docker" "start" "-a" "dabcea3eed4a35ce6bdfdfe23fb21b2162b05b754edabda093d24670f4c61ec2", kill_on_drop: false }`
[INFO] [stdout] warning: unused variable: `obscure_input`
[INFO] [stdout]    --> src/crypto.rs:203:33
[INFO] [stdout]     |
[INFO] [stdout] 203 | pub fn read_stdin(prompt: &str, obscure_input: bool) -> Result<String, String> {
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_obscure_input`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/git_db.rs:365:9
[INFO] [stdout]     |
[INFO] [stdout] 365 | /         &self.repo.checkout_head(None)
[INFO] [stdout] 366 | |             .map_err(|e| format!("Failed to checkout head: {:?}", e))?;
[INFO] [stdout]     | |______________________________________________________________________^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 365 |         let _ = &self.repo.checkout_head(None)
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling gitdb v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `obscure_input`
[INFO] [stdout]    --> src/crypto.rs:203:33
[INFO] [stdout]     |
[INFO] [stdout] 203 | pub fn read_stdin(prompt: &str, obscure_input: bool) -> Result<String, String> {
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_obscure_input`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/git_db.rs:365:9
[INFO] [stdout]     |
[INFO] [stdout] 365 | /         &self.repo.checkout_head(None)
[INFO] [stdout] 366 | |             .map_err(|e| format!("Failed to checkout head: {:?}", e))?;
[INFO] [stdout]     | |______________________________________________________________________^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 365 |         let _ = &self.repo.checkout_head(None)
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.34s
[INFO] running `Command { std: "docker" "inspect" "dabcea3eed4a35ce6bdfdfe23fb21b2162b05b754edabda093d24670f4c61ec2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dabcea3eed4a35ce6bdfdfe23fb21b2162b05b754edabda093d24670f4c61ec2", kill_on_drop: false }`
[INFO] [stdout] dabcea3eed4a35ce6bdfdfe23fb21b2162b05b754edabda093d24670f4c61ec2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-09-08" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 033943d7d6f6d0ff09681bfb801543c6d9599419808ffd199ce4bdec8e8c32d5
[INFO] running `Command { std: "docker" "start" "-a" "033943d7d6f6d0ff09681bfb801543c6d9599419808ffd199ce4bdec8e8c32d5", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `obscure_input`
[INFO] [stderr]    --> src/crypto.rs:203:33
[INFO] [stderr]     |
[INFO] [stderr] 203 | pub fn read_stdin(prompt: &str, obscure_input: bool) -> Result<String, String> {
[INFO] [stderr]     |                                 ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_obscure_input`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> src/git_db.rs:365:9
[INFO] [stderr]     |
[INFO] [stderr] 365 | /         &self.repo.checkout_head(None)
[INFO] [stderr] 366 | |             .map_err(|e| format!("Failed to checkout head: {:?}", e))?;
[INFO] [stderr]     | |______________________________________________________________________^ the borrow produces a value
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 365 |         let _ = &self.repo.checkout_head(None)
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `gitdb` (lib) generated 2 warnings
[INFO] [stderr] warning: `gitdb` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/gitdb-11b034f9f7a4a5be)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests gitdb
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "033943d7d6f6d0ff09681bfb801543c6d9599419808ffd199ce4bdec8e8c32d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "033943d7d6f6d0ff09681bfb801543c6d9599419808ffd199ce4bdec8e8c32d5", kill_on_drop: false }`
[INFO] [stdout] 033943d7d6f6d0ff09681bfb801543c6d9599419808ffd199ce4bdec8e8c32d5