[INFO] fetching crate oaf 0.1.4...
[INFO] checking oaf-0.1.4 against try#31561a63598a0f21fc74c024747ef1310fdd2eb2 for pr-133536
[INFO] extracting crate oaf 0.1.4 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate oaf 0.1.4 on toolchain 31561a63598a0f21fc74c024747ef1310fdd2eb2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate oaf 0.1.4
[INFO] finished tweaking crates.io crate oaf 0.1.4
[INFO] tweaked toml for crates.io crate oaf 0.1.4 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate crates.io crate oaf 0.1.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ab8f7337d517a71137c02f887aec897ab14b03737617f194594856f33cd64b9e
[INFO] running `Command { std: "docker" "start" "-a" "ab8f7337d517a71137c02f887aec897ab14b03737617f194594856f33cd64b9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ab8f7337d517a71137c02f887aec897ab14b03737617f194594856f33cd64b9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab8f7337d517a71137c02f887aec897ab14b03737617f194594856f33cd64b9e", kill_on_drop: false }`
[INFO] [stdout] ab8f7337d517a71137c02f887aec897ab14b03737617f194594856f33cd64b9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+31561a63598a0f21fc74c024747ef1310fdd2eb2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6dda917ff50fa3a2f0258bdabf12b515a1de6cdb35b00ac0e05d5f7ee6295989
[INFO] running `Command { std: "docker" "start" "-a" "6dda917ff50fa3a2f0258bdabf12b515a1de6cdb35b00ac0e05d5f7ee6295989", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling once_cell v1.8.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]    Compiling enum_dispatch v0.3.7
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking oaf v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error: unused return value of `exec` that must be used
[INFO] [stdout]   --> src/main.rs:85:13
[INFO] [stdout]    |
[INFO] [stdout] 85 |             make_git_command(&args_vec).exec();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/main.rs:8:38
[INFO] [stdout]    |
[INFO] [stdout] 8  | #![cfg_attr(feature = "strict", deny(warnings))]
[INFO] [stdout]    |                                      ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_must_use)]` implied by `#[deny(warnings)]`
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 85 |             let _ = make_git_command(&args_vec).exec();
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `exec` that must be used
[INFO] [stdout]    --> src/commands.rs:458:9
[INFO] [stdout]     |
[INFO] [stdout] 458 | /         make_git_command(&match self.make_args() {
[INFO] [stdout] 459 | |             Ok(args) => args,
[INFO] [stdout] 460 | |             Err(status) => return status,
[INFO] [stdout] 461 | |         })
[INFO] [stdout] 462 | |         .exec();
[INFO] [stdout]     | |_______________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 458 |         let _ = make_git_command(&match self.make_args() {
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `exec` that must be used
[INFO] [stdout]    --> src/commands.rs:510:9
[INFO] [stdout]     |
[INFO] [stdout] 510 |         make_git_command(&args).exec();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 510 |         let _ = make_git_command(&args).exec();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `oaf` (bin "oaf") due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: unused return value of `exec` that must be used
[INFO] [stdout]   --> src/main.rs:85:13
[INFO] [stdout]    |
[INFO] [stdout] 85 |             make_git_command(&args_vec).exec();
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/main.rs:8:38
[INFO] [stdout]    |
[INFO] [stdout] 8  | #![cfg_attr(feature = "strict", deny(warnings))]
[INFO] [stdout]    |                                      ^^^^^^^^
[INFO] [stdout]    = note: `#[deny(unused_must_use)]` implied by `#[deny(warnings)]`
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 85 |             let _ = make_git_command(&args_vec).exec();
[INFO] [stdout]    |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `exec` that must be used
[INFO] [stdout]    --> src/commands.rs:458:9
[INFO] [stdout]     |
[INFO] [stdout] 458 | /         make_git_command(&match self.make_args() {
[INFO] [stdout] 459 | |             Ok(args) => args,
[INFO] [stdout] 460 | |             Err(status) => return status,
[INFO] [stdout] 461 | |         })
[INFO] [stdout] 462 | |         .exec();
[INFO] [stdout]     | |_______________^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 458 |         let _ = make_git_command(&match self.make_args() {
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unused return value of `exec` that must be used
[INFO] [stdout]    --> src/commands.rs:510:9
[INFO] [stdout]     |
[INFO] [stdout] 510 |         make_git_command(&args).exec();
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 510 |         let _ = make_git_command(&args).exec();
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `oaf` (bin "oaf" test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "6dda917ff50fa3a2f0258bdabf12b515a1de6cdb35b00ac0e05d5f7ee6295989", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dda917ff50fa3a2f0258bdabf12b515a1de6cdb35b00ac0e05d5f7ee6295989", kill_on_drop: false }`
[INFO] [stdout] 6dda917ff50fa3a2f0258bdabf12b515a1de6cdb35b00ac0e05d5f7ee6295989
