[INFO] cloning repository https://github.com/leeola/prost-yat
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/leeola/prost-yat" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleeola%2Fprost-yat", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleeola%2Fprost-yat'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 43dd3eafa8849059178956df3f27b36b147275a1
[INFO] checking leeola/prost-yat against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleeola%2Fprost-yat" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/leeola/prost-yat on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/leeola/prost-yat
[INFO] finished tweaking git repo https://github.com/leeola/prost-yat
[INFO] tweaked toml for git repo https://github.com/leeola/prost-yat written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/leeola/prost-yat 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded prost v0.4.0
[INFO] [stderr]   Downloaded prost-derive v0.4.0
[INFO] [stderr]   Downloaded syn v0.15.24
[INFO] [stderr]   Downloaded libc v0.2.46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c23f9b13a6b18e155f7ddb05d6625129d96a18b8f91aeb5afb422e9cd5ad6c96
[INFO] running `Command { std: "docker" "start" "-a" "c23f9b13a6b18e155f7ddb05d6625129d96a18b8f91aeb5afb422e9cd5ad6c96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c23f9b13a6b18e155f7ddb05d6625129d96a18b8f91aeb5afb422e9cd5ad6c96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c23f9b13a6b18e155f7ddb05d6625129d96a18b8f91aeb5afb422e9cd5ad6c96", kill_on_drop: false }`
[INFO] [stdout] c23f9b13a6b18e155f7ddb05d6625129d96a18b8f91aeb5afb422e9cd5ad6c96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 87b9dfedf1b95c2dcd1d85fde943b156f2c8573fb2524db642a49dfea2be381d
[INFO] running `Command { std: "docker" "start" "-a" "87b9dfedf1b95c2dcd1d85fde943b156f2c8573fb2524db642a49dfea2be381d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.46
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling cc v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling autocfg v0.1.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.13
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling serde v1.0.84
[INFO] [stderr]     Checking byteorder v1.2.7
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking bytes v0.4.11
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling syn v0.15.24
[INFO] [stderr]     Checking prost v0.4.0
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling serde_derive v1.0.84
[INFO] [stderr]    Compiling prost-derive v0.4.0
[INFO] [stderr]     Checking prost-yat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::convert::From;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `From` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::convert::From;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/385fa9d845dd326c6bbfd58c22244215e431948a/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `From` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.62s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.14.9
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "87b9dfedf1b95c2dcd1d85fde943b156f2c8573fb2524db642a49dfea2be381d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "87b9dfedf1b95c2dcd1d85fde943b156f2c8573fb2524db642a49dfea2be381d", kill_on_drop: false }`
[INFO] [stdout] 87b9dfedf1b95c2dcd1d85fde943b156f2c8573fb2524db642a49dfea2be381d
[INFO] checking leeola/prost-yat against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fleeola%2Fprost-yat" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/leeola/prost-yat on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/leeola/prost-yat
[INFO] finished tweaking git repo https://github.com/leeola/prost-yat
[INFO] tweaked toml for git repo https://github.com/leeola/prost-yat written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/leeola/prost-yat 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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 640ca63eda7a7ee9355380a898f76115a96bd09489f1c635d82b4a6d80530a19
[INFO] running `Command { std: "docker" "start" "-a" "640ca63eda7a7ee9355380a898f76115a96bd09489f1c635d82b4a6d80530a19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "640ca63eda7a7ee9355380a898f76115a96bd09489f1c635d82b4a6d80530a19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "640ca63eda7a7ee9355380a898f76115a96bd09489f1c635d82b4a6d80530a19", kill_on_drop: false }`
[INFO] [stdout] 640ca63eda7a7ee9355380a898f76115a96bd09489f1c635d82b4a6d80530a19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f2f99c1ff649ebf655dcd2b0db42f659fbbaef12ab18080504bb170aabc39267
[INFO] running `Command { std: "docker" "start" "-a" "f2f99c1ff649ebf655dcd2b0db42f659fbbaef12ab18080504bb170aabc39267", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.46
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling cc v1.0.28
[INFO] [stderr]    Compiling autocfg v0.1.1
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling rustc-demangle v0.1.13
[INFO] [stderr]     Checking byteorder v1.2.7
[INFO] [stderr]    Compiling either v1.5.0
[INFO] [stderr]    Compiling serde v1.0.84
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling syn v0.15.24
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]     Checking iovec v0.1.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]     Checking bytes v0.4.11
[INFO] [stderr]     Checking prost v0.4.0
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling serde_derive v1.0.84
[INFO] [stderr]    Compiling prost-derive v0.4.0
[INFO] [stderr]     Checking prost-yat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::convert::From;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `From` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `From` is imported redundantly
[INFO] [stdout]  --> src/lib.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::convert::From;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/645bb72776a6a56a1a8f52631a44bd082b2ba509/library/std/src/prelude/mod.rs:134:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `From` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 9.04s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: syn v0.14.9
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "f2f99c1ff649ebf655dcd2b0db42f659fbbaef12ab18080504bb170aabc39267", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2f99c1ff649ebf655dcd2b0db42f659fbbaef12ab18080504bb170aabc39267", kill_on_drop: false }`
[INFO] [stdout] f2f99c1ff649ebf655dcd2b0db42f659fbbaef12ab18080504bb170aabc39267