[INFO] cloning repository https://github.com/Drews4life/tt_task
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Drews4life/tt_task" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDrews4life%2Ftt_task", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDrews4life%2Ftt_task'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0c3a5b7ee396ecf04e48b9059ca53d644d73c8a2
[INFO] checking Drews4life/tt_task/0c3a5b7ee396ecf04e48b9059ca53d644d73c8a2 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDrews4life%2Ftt_task" "/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/Drews4life/tt_task on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Drews4life/tt_task
[INFO] finished tweaking git repo https://github.com/Drews4life/tt_task
[INFO] tweaked toml for git repo https://github.com/Drews4life/tt_task written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Drews4life/tt_task 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" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ebfad3172523af048c8eac02a68b532ec62aa161ff802a49f45e095ee0eb8fc1
[INFO] running `Command { std: "docker" "start" "-a" "ebfad3172523af048c8eac02a68b532ec62aa161ff802a49f45e095ee0eb8fc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebfad3172523af048c8eac02a68b532ec62aa161ff802a49f45e095ee0eb8fc1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebfad3172523af048c8eac02a68b532ec62aa161ff802a49f45e095ee0eb8fc1", kill_on_drop: false }`
[INFO] [stdout] ebfad3172523af048c8eac02a68b532ec62aa161ff802a49f45e095ee0eb8fc1
[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 -Dtail_expr_drop_order" "-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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b7b576abc992f4c791afe90428de63f7d4eb52bee61c197dccf848373394a53e
[INFO] running `Command { std: "docker" "start" "-a" "b7b576abc992f4c791afe90428de63f7d4eb52bee61c197dccf848373394a53e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.137
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking zeroize v1.5.7
[INFO] [stderr]     Checking base16ct v0.1.1
[INFO] [stderr]     Checking cpufeatures v0.2.5
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling generic-array v0.14.6
[INFO] [stderr]     Checking der v0.6.0
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking block-buffer v0.10.3
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking sec1 v0.3.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking digest v0.10.5
[INFO] [stderr]     Checking crypto-bigint v0.4.9
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking signature v1.6.4
[INFO] [stderr]     Checking sha2 v0.10.6
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking elliptic-curve v0.12.3
[INFO] [stderr]     Checking ecdsa v0.14.8
[INFO] [stderr]     Checking untitled v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `DLogProofField` is never constructed
[INFO] [stdout]  --> src/dlog.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct DLogProofField;
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `S` and `T` are never constructed
[INFO] [stdout]   --> src/dlog.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | enum DlogFields {
[INFO] [stdout]    |      ---------- variants in this enum
[INFO] [stdout] 17 |     S(u128),
[INFO] [stdout]    |     ^
[INFO] [stdout] 18 |     T(CompactedPoint),
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `serialize` is never used
[INFO] [stdout]   --> src/dlog.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl DLogProof {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 68 |     pub fn serialize(&self) -> SerializedDlog {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `serialize` and `deserialize` are never used
[INFO] [stdout]   --> src/dlog.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 92 | impl DLogProofField {
[INFO] [stdout]    | ------------------- methods in this implementation
[INFO] [stdout] 93 |     pub fn serialize(&self, dlog_proof: &DLogProof) -> SerializedDlog {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 97 |     pub fn deserialize(&self, serialized: SerializedDlog) -> DLogProof {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `DLogProofField` is never constructed
[INFO] [stdout]  --> src/dlog.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | struct DLogProofField;
[INFO] [stdout]   |        ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `S` and `T` are never constructed
[INFO] [stdout]   --> src/dlog.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | enum DlogFields {
[INFO] [stdout]    |      ---------- variants in this enum
[INFO] [stdout] 17 |     S(u128),
[INFO] [stdout]    |     ^
[INFO] [stdout] 18 |     T(CompactedPoint),
[INFO] [stdout]    |     ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `serialize` is never used
[INFO] [stdout]   --> src/dlog.rs:68:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl DLogProof {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 68 |     pub fn serialize(&self) -> SerializedDlog {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `serialize` and `deserialize` are never used
[INFO] [stdout]   --> src/dlog.rs:93:12
[INFO] [stdout]    |
[INFO] [stdout] 92 | impl DLogProofField {
[INFO] [stdout]    | ------------------- methods in this implementation
[INFO] [stdout] 93 |     pub fn serialize(&self, dlog_proof: &DLogProof) -> SerializedDlog {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 97 |     pub fn deserialize(&self, serialized: SerializedDlog) -> DLogProof {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.76s
[INFO] running `Command { std: "docker" "inspect" "b7b576abc992f4c791afe90428de63f7d4eb52bee61c197dccf848373394a53e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7b576abc992f4c791afe90428de63f7d4eb52bee61c197dccf848373394a53e", kill_on_drop: false }`
[INFO] [stdout] b7b576abc992f4c791afe90428de63f7d4eb52bee61c197dccf848373394a53e