[INFO] cloning repository https://github.com/inmemlab/memson
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/inmemlab/memson" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finmemlab%2Fmemson", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finmemlab%2Fmemson'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 53d6052ea4e26343c193f2399a15d5b63ff86320
[INFO] checking inmemlab/memson against try#b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f for pr-76104
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Finmemlab%2Fmemson" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/inmemlab/memson on toolchain b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/inmemlab/memson
[INFO] finished tweaking git repo https://github.com/inmemlab/memson
[INFO] tweaked toml for git repo https://github.com/inmemlab/memson written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/inmemlab/memson already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded enum-as-inner v0.3.3
[INFO] [stderr]   Downloaded actix-server v1.0.3
[INFO] [stderr]   Downloaded async-trait v0.1.40
[INFO] [stderr]   Downloaded actix-service v1.0.6
[INFO] [stderr]   Downloaded assert_approx_eq v1.1.0
[INFO] [stderr]   Downloaded actix-threadpool v0.3.3
[INFO] [stderr]   Downloaded actix-testing v1.0.1
[INFO] [stderr]   Downloaded actix-web-codegen v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8e988eb72c455a0db9bcfdace5f05f72f2deba24645459b1080c2471fe3d9d90
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8e988eb72c455a0db9bcfdace5f05f72f2deba24645459b1080c2471fe3d9d90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8e988eb72c455a0db9bcfdace5f05f72f2deba24645459b1080c2471fe3d9d90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e988eb72c455a0db9bcfdace5f05f72f2deba24645459b1080c2471fe3d9d90", kill_on_drop: false }`
[INFO] [stdout] 8e988eb72c455a0db9bcfdace5f05f72f2deba24645459b1080c2471fe3d9d90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] eed04e4a4a66091bbd18e8b65cf54b8f057e77ea1300010946af373f0e59caf2
[INFO] running `Command { std: "docker" "start" "-a" "eed04e4a4a66091bbd18e8b65cf54b8f057e77ea1300010946af373f0e59caf2", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]     Checking once_cell v1.4.1
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[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]     Checking linked-hash-map v0.5.3
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[INFO] [stderr]    Compiling crc32fast v1.2.0
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[INFO] [stderr]     Checking language-tags v0.2.2
[INFO] [stderr]     Checking termcolor v1.1.0
[INFO] [stderr]     Checking assert_approx_eq v1.1.0
[INFO] [stderr]     Checking bytestring v0.1.5
[INFO] [stderr]     Checking tracing-core v0.1.16
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking futures-channel v0.3.5
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[INFO] [stderr]    Compiling synstructure v0.12.4
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[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling derive_more v0.99.9
[INFO] [stderr]    Compiling actix-macros v0.1.2
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling async-trait v0.1.40
[INFO] [stderr]    Compiling enum-as-inner v0.3.3
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[INFO] [stderr]     Checking memson v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::eval::*`
[INFO] [stdout]   --> src/eval.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |     use crate::eval::*;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde_json::json`
[INFO] [stdout]   --> src/eval.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |     use serde_json::json;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::json::*`
[INFO] [stdout]    --> src/json.rs:651:9
[INFO] [stdout]     |
[INFO] [stdout] 651 |     use crate::json::*;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse`
[INFO] [stdout]   --> src/cmd.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 |     fn parse(json: Json) -> Result<Self, Error> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_bin_fn`
[INFO] [stdout]    --> src/cmd.rs:205:4
[INFO] [stdout]     |
[INFO] [stdout] 205 | fn parse_bin_fn<F>(arg: Json, f: F) -> Result<Cmd, Error>
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_unr_fn`
[INFO] [stdout]    --> src/cmd.rs:222:4
[INFO] [stdout]     |
[INFO] [stdout] 222 | fn parse_unr_fn<F>(arg: Json, f: F) -> Result<Cmd, Error>
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_b_str_fn`
[INFO] [stdout]    --> src/cmd.rs:230:4
[INFO] [stdout]     |
[INFO] [stdout] 230 | fn parse_b_str_fn<F>(val: Json, f: F) -> Result<Cmd, Error>
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse`
[INFO] [stdout]    --> src/cmd.rs:251:12
[INFO] [stdout]     |
[INFO] [stdout] 251 |     pub fn parse(json: Json) -> Result<Self, Error> {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Serialize`
[INFO] [stdout]   --> src/err.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     Serialize,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `get`
[INFO] [stdout]  --> src/eval.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn get(key: &str, val: &Json) -> Option<Json> {
[INFO] [stdout]   |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `key`
[INFO] [stdout]   --> src/eval.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn key(keys: &[String], mut val: Option<Json>) -> Option<Json> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `obj`
[INFO] [stdout]   --> src/keyed.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn obj(val: Json) -> JsonObj {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `count`
[INFO] [stdout]   --> src/keyed.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 |     fn count(key: &str) -> Cmd {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `max`
[INFO] [stdout]   --> src/keyed.rs:68:8
[INFO] [stdout]    |
[INFO] [stdout] 68 |     fn max(key: &str) -> Cmd {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `min`
[INFO] [stdout]   --> src/keyed.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 72 |     fn min(key: &str) -> Cmd {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `data`
[INFO] [stdout]   --> src/keyed.rs:76:8
[INFO] [stdout]    |
[INFO] [stdout] 76 |     fn data() -> Json {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 25s
[INFO] running `Command { std: "docker" "inspect" "eed04e4a4a66091bbd18e8b65cf54b8f057e77ea1300010946af373f0e59caf2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eed04e4a4a66091bbd18e8b65cf54b8f057e77ea1300010946af373f0e59caf2", kill_on_drop: false }`
[INFO] [stdout] eed04e4a4a66091bbd18e8b65cf54b8f057e77ea1300010946af373f0e59caf2