[INFO] fetching crate tea-keyvalue-provider 0.1.1...
[INFO] checking tea-keyvalue-provider-0.1.1 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate tea-keyvalue-provider 0.1.1 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate tea-keyvalue-provider 0.1.1
[INFO] finished tweaking crates.io crate tea-keyvalue-provider 0.1.1
[INFO] tweaked toml for crates.io crate tea-keyvalue-provider 0.1.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tea-keyvalue-provider 0.1.1 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 46 packages to latest compatible versions
[INFO] [stderr]       Adding env_logger v0.7.1 (available: v0.11.8)
[INFO] [stderr]       Adding key-vec v0.2.6 (available: v0.4.1)
[INFO] [stderr]       Adding wascc-codec v0.6.0 (available: v0.9.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b3bb8d40d1efb99b6768e6e6df4d814a85b0990293ef303681fb637713c1b716
[INFO] running `Command { std: "docker" "start" "-a" "b3bb8d40d1efb99b6768e6e6df4d814a85b0990293ef303681fb637713c1b716", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3bb8d40d1efb99b6768e6e6df4d814a85b0990293ef303681fb637713c1b716", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3bb8d40d1efb99b6768e6e6df4d814a85b0990293ef303681fb637713c1b716", kill_on_drop: false }`
[INFO] [stdout] b3bb8d40d1efb99b6768e6e6df4d814a85b0990293ef303681fb637713c1b716
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d76d00f0211776df28cf615b7246dd4fe435692ffbe352dafb4bdd5edff1cd7
[INFO] running `Command { std: "docker" "start" "-a" "6d76d00f0211776df28cf615b7246dd4fe435692ffbe352dafb4bdd5edff1cd7", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]    Compiling autocfg v1.5.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]     Checking memchr v2.7.5
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling paste v1.0.15
[INFO] [stderr]    Compiling serde_json v1.0.140
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling libc v0.2.174
[INFO] [stderr]     Checking regex-syntax v0.8.5
[INFO] [stderr]     Checking ryu v1.0.20
[INFO] [stderr]     Checking itoa v1.0.15
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking termcolor v1.4.1
[INFO] [stderr]     Checking key-vec v0.2.6
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]     Checking aho-corasick v1.1.3
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rmp v0.8.14
[INFO] [stderr]     Checking regex-automata v0.4.9
[INFO] [stderr]     Checking log v0.4.27
[INFO] [stderr]     Checking rmp-serde v0.14.4
[INFO] [stderr]     Checking serde_bytes v0.11.17
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]     Checking regex v1.11.1
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking wascc-codec v0.6.0
[INFO] [stderr]     Checking tea-codec v0.1.1
[INFO] [stderr]     Checking tea-keyvalue-provider v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/kv.rs:361:9
[INFO] [stdout]     |
[INFO] [stdout] 361 |         store.set("thenumber", "42".to_owned().into_bytes());
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 361 |         let _ = store.set("thenumber", "42".to_owned().into_bytes());
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/kv.rs:365:9
[INFO] [stdout]     |
[INFO] [stdout] 365 |         store.set("thenumber", "41".to_owned().into_bytes());
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 365 |         let _ = store.set("thenumber", "41".to_owned().into_bytes());
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/kv.rs:374:9
[INFO] [stdout]     |
[INFO] [stdout] 374 |         store.sv_insert("sorted", &tup1, false);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 374 |         let _ = store.sv_insert("sorted", &tup1, false);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/kv.rs:375:9
[INFO] [stdout]     |
[INFO] [stdout] 375 |         store.sv_insert("sorted", &tup0, false);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 375 |         let _ = store.sv_insert("sorted", &tup0, false);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/kv.rs:376:9
[INFO] [stdout]     |
[INFO] [stdout] 376 |         store.sv_insert("sorted", &tup3, false);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 376 |         let _ = store.sv_insert("sorted", &tup3, false);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/kv.rs:380:9
[INFO] [stdout]     |
[INFO] [stdout] 380 |         store.sv_insert("sorted", &tup2, false);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 380 |         let _ = store.sv_insert("sorted", &tup2, false);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/kv.rs:383:9
[INFO] [stdout]     |
[INFO] [stdout] 383 |         store.sv_tail_off("sorted", 2);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 383 |         let _ = store.sv_tail_off("sorted", 2);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.22s
[INFO] running `Command { std: "docker" "inspect" "6d76d00f0211776df28cf615b7246dd4fe435692ffbe352dafb4bdd5edff1cd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d76d00f0211776df28cf615b7246dd4fe435692ffbe352dafb4bdd5edff1cd7", kill_on_drop: false }`
[INFO] [stdout] 6d76d00f0211776df28cf615b7246dd4fe435692ffbe352dafb4bdd5edff1cd7