[INFO] cloning repository https://github.com/mrLSD/reqrep-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mrLSD/reqrep-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmrLSD%2Freqrep-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmrLSD%2Freqrep-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5eb06aefa94fdd2c9de1b44e3b05ab2d5f080ccb
[INFO] checking mrLSD/reqrep-rs against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmrLSD%2Freqrep-rs" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mrLSD/reqrep-rs 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/mrLSD/reqrep-rs
[INFO] finished tweaking git repo https://github.com/mrLSD/reqrep-rs
[INFO] tweaked toml for git repo https://github.com/mrLSD/reqrep-rs written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mrLSD/reqrep-rs 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded nanomsg-sys v0.6.2
[INFO] [stderr]   Downloaded ordered-float v0.5.0
[INFO] [stderr]   Downloaded num-iter v0.1.34
[INFO] [stderr]   Downloaded unreachable v0.1.1
[INFO] [stderr]   Downloaded cmake v0.1.29
[INFO] [stderr]   Downloaded nanomsg v0.6.2
[INFO] [stderr]   Downloaded serde-value v0.5.1
[INFO] [stderr]   Downloaded humantime v1.0.0
[INFO] [stderr]   Downloaded linked-hash-map v0.5.0
[INFO] [stderr]   Downloaded cc v1.0.3
[INFO] [stderr]   Downloaded num-integer v0.1.35
[INFO] [stderr]   Downloaded flate2 v1.0.1
[INFO] [stderr]   Downloaded num-traits v0.1.41
[INFO] [stderr]   Downloaded chrono v0.4.0
[INFO] [stderr]   Downloaded libc v0.2.35
[INFO] [stderr]   Downloaded num v0.1.41
[INFO] [stderr]   Downloaded winapi v0.3.3
[INFO] [stderr]   Downloaded time v0.1.39
[INFO] [stderr]   Downloaded miniz-sys v0.1.10
[INFO] [stderr]   Downloaded serde_yaml v0.7.3
[INFO] [stderr]   Downloaded log4rs v0.8.0
[INFO] [stderr]   Downloaded winapi-i686-pc-windows-gnu v0.3.2
[INFO] [stderr]   Downloaded winapi-x86_64-pc-windows-gnu v0.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] e308a124157565ab569d45659708f092a14574ad7359c47c16e1ef4a9f02a782
[INFO] running `Command { std: "docker" "start" "-a" "e308a124157565ab569d45659708f092a14574ad7359c47c16e1ef4a9f02a782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e308a124157565ab569d45659708f092a14574ad7359c47c16e1ef4a9f02a782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e308a124157565ab569d45659708f092a14574ad7359c47c16e1ef4a9f02a782", kill_on_drop: false }`
[INFO] [stdout] e308a124157565ab569d45659708f092a14574ad7359c47c16e1ef4a9f02a782
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 779e3174c064a129258749f730dee35e93b4b3cbc6be4f199d91a06d412e3120
[INFO] running `Command { std: "docker" "start" "-a" "779e3174c064a129258749f730dee35e93b4b3cbc6be4f199d91a06d412e3120", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.3
[INFO] [stderr]     Checking num-traits v0.1.41
[INFO] [stderr]     Checking libc v0.2.35
[INFO] [stderr]     Checking serde v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]     Checking linked-hash-map v0.5.0
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]    Compiling cmake v0.1.29
[INFO] [stderr]     Checking time v0.1.39
[INFO] [stderr]     Checking yaml-rust v0.4.0
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking ordered-float v0.5.0
[INFO] [stderr]     Checking num v0.1.41
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking itoa v0.3.4
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking quick-error v1.2.1
[INFO] [stderr]     Checking humantime v1.0.0
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stderr]     Checking log-mdc v0.1.0
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]    Compiling nanomsg-sys v0.6.2
[INFO] [stderr]     Checking crossbeam v0.3.2
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking antidote v1.0.0
[INFO] [stderr]     Checking nanomsg v0.6.2
[INFO] [stderr]    Compiling serde_derive_internals v0.19.0
[INFO] [stderr]    Compiling serde_derive v1.0.27
[INFO] [stderr]     Checking flate2 v1.0.1
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking serde-value v0.5.1
[INFO] [stderr]     Checking serde_yaml v0.7.3
[INFO] [stderr]     Checking serde_json v1.0.9
[INFO] [stderr]     Checking log4rs v0.8.0
[INFO] [stderr]     Checking reqrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `nanomsg` is imported redundantly
[INFO] [stdout]  --> src/reqrep.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use nanomsg;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate nanomsg;
[INFO] [stdout]   | --------------------- the item `nanomsg` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `nanomsg` is imported redundantly
[INFO] [stdout]  --> src/reqrep.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use nanomsg;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate nanomsg;
[INFO] [stdout]   | --------------------- the item `nanomsg` is already imported 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 13.92s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: traitobject v0.1.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "779e3174c064a129258749f730dee35e93b4b3cbc6be4f199d91a06d412e3120", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "779e3174c064a129258749f730dee35e93b4b3cbc6be4f199d91a06d412e3120", kill_on_drop: false }`
[INFO] [stdout] 779e3174c064a129258749f730dee35e93b4b3cbc6be4f199d91a06d412e3120
[INFO] checking mrLSD/reqrep-rs against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FmrLSD%2Freqrep-rs" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mrLSD/reqrep-rs 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/mrLSD/reqrep-rs
[INFO] finished tweaking git repo https://github.com/mrLSD/reqrep-rs
[INFO] tweaked toml for git repo https://github.com/mrLSD/reqrep-rs written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mrLSD/reqrep-rs 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] a2f2b63a3a2871be51316d720f37186b19556447fbb29c01bc156b248b9a4197
[INFO] running `Command { std: "docker" "start" "-a" "a2f2b63a3a2871be51316d720f37186b19556447fbb29c01bc156b248b9a4197", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a2f2b63a3a2871be51316d720f37186b19556447fbb29c01bc156b248b9a4197", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2f2b63a3a2871be51316d720f37186b19556447fbb29c01bc156b248b9a4197", kill_on_drop: false }`
[INFO] [stdout] a2f2b63a3a2871be51316d720f37186b19556447fbb29c01bc156b248b9a4197
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] dad3b41c4090f9f7cac219dedad42dbcf6b164da1e230c65e665759c6564410e
[INFO] running `Command { std: "docker" "start" "-a" "dad3b41c4090f9f7cac219dedad42dbcf6b164da1e230c65e665759c6564410e", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.3
[INFO] [stderr]     Checking num-traits v0.1.41
[INFO] [stderr]     Checking libc v0.2.35
[INFO] [stderr]     Checking serde v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling gcc v0.3.54
[INFO] [stderr]    Compiling pkg-config v0.3.9
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking linked-hash-map v0.5.0
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]    Compiling cmake v0.1.29
[INFO] [stderr]     Checking unsafe-any v0.4.2
[INFO] [stderr]     Checking yaml-rust v0.4.0
[INFO] [stderr]     Checking time v0.1.39
[INFO] [stderr]     Checking num-integer v0.1.35
[INFO] [stderr]     Checking num-iter v0.1.34
[INFO] [stderr]     Checking num v0.1.41
[INFO] [stderr]     Checking ordered-float v0.5.0
[INFO] [stderr]     Checking itoa v0.3.4
[INFO] [stderr]     Checking dtoa v0.4.2
[INFO] [stderr]     Checking quick-error v1.2.1
[INFO] [stderr]     Checking chrono v0.4.0
[INFO] [stderr]     Checking typemap v0.3.3
[INFO] [stderr]    Compiling miniz-sys v0.1.10
[INFO] [stderr]    Compiling nanomsg-sys v0.6.2
[INFO] [stderr]     Checking humantime v1.0.0
[INFO] [stderr]     Checking log-mdc v0.1.0
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking antidote v1.0.0
[INFO] [stderr]     Checking crossbeam v0.3.2
[INFO] [stderr]    Compiling serde_derive_internals v0.19.0
[INFO] [stderr]     Checking nanomsg v0.6.2
[INFO] [stderr]    Compiling serde_derive v1.0.27
[INFO] [stderr]     Checking flate2 v1.0.1
[INFO] [stderr]     Checking serde-value v0.5.1
[INFO] [stderr]     Checking serde_yaml v0.7.3
[INFO] [stderr]     Checking log v0.4.1
[INFO] [stderr]     Checking serde_json v1.0.9
[INFO] [stderr]     Checking log4rs v0.8.0
[INFO] [stderr]     Checking reqrep v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `nanomsg` is imported redundantly
[INFO] [stdout]  --> src/reqrep.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use nanomsg;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate nanomsg;
[INFO] [stdout]   | --------------------- the item `nanomsg` is already imported here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `nanomsg` is imported redundantly
[INFO] [stdout]  --> src/reqrep.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use nanomsg;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate nanomsg;
[INFO] [stdout]   | --------------------- the item `nanomsg` is already imported 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 14.31s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: traitobject v0.1.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 2`
[INFO] running `Command { std: "docker" "inspect" "dad3b41c4090f9f7cac219dedad42dbcf6b164da1e230c65e665759c6564410e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dad3b41c4090f9f7cac219dedad42dbcf6b164da1e230c65e665759c6564410e", kill_on_drop: false }`
[INFO] [stdout] dad3b41c4090f9f7cac219dedad42dbcf6b164da1e230c65e665759c6564410e