[INFO] cloning repository https://github.com/poovamraj/rsm
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/poovamraj/rsm" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpoovamraj%2Frsm", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpoovamraj%2Frsm'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 05b87f70240d11c8d9ada113f5c3717c346a9ea8
[INFO] checking poovamraj/rsm against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpoovamraj%2Frsm" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/poovamraj/rsm 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/poovamraj/rsm
[INFO] finished tweaking git repo https://github.com/poovamraj/rsm
[INFO] tweaked toml for git repo https://github.com/poovamraj/rsm written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/poovamraj/rsm 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 machine-uid v0.2.0
[INFO] [stderr]   Downloaded async-process v1.2.0
[INFO] [stderr]   Downloaded heim-runtime v0.1.0-rc.1
[INFO] [stderr]   Downloaded heim-virt v0.1.0-rc.1
[INFO] [stderr]   Downloaded heim-common v0.1.0-rc.1
[INFO] [stderr]   Downloaded heim v0.1.0-rc.1
[INFO] [stderr]   Downloaded darwin-libproc-sys v0.2.0
[INFO] [stderr]   Downloaded heim-disk v0.1.0-rc.1
[INFO] [stderr]   Downloaded heim-process v0.1.1-rc.1
[INFO] [stderr]   Downloaded uom v0.30.0
[INFO] [stderr]   Downloaded raw-cpuid v8.1.2
[INFO] [stderr]   Downloaded rusqlite v0.26.3
[INFO] [stderr]   Downloaded heim-memory v0.1.0-rc.1
[INFO] [stderr]   Downloaded heim-cpu v0.1.0-rc.1
[INFO] [stderr]   Downloaded platforms v1.0.3
[INFO] [stderr]   Downloaded heim-host v0.1.0-rc.1
[INFO] [stderr]   Downloaded heim-net v0.1.0-rc.1
[INFO] [stderr]   Downloaded ordered-float v2.0.1
[INFO] [stderr]   Downloaded polling v2.1.0
[INFO] [stderr]   Downloaded darwin-libproc v0.2.0
[INFO] [stderr]   Downloaded macaddr v1.0.1
[INFO] [stderr]   Downloaded heim-sensors v0.1.0-rc.1
[INFO] [stderr]   Downloaded libsqlite3-sys v0.23.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 8f4e2620cfda8a74c4ac69c118d1d7dfbe6d5c6e5cb0a7b41a46719869eb111c
[INFO] running `Command { std: "docker" "start" "-a" "8f4e2620cfda8a74c4ac69c118d1d7dfbe6d5c6e5cb0a7b41a46719869eb111c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8f4e2620cfda8a74c4ac69c118d1d7dfbe6d5c6e5cb0a7b41a46719869eb111c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f4e2620cfda8a74c4ac69c118d1d7dfbe6d5c6e5cb0a7b41a46719869eb111c", kill_on_drop: false }`
[INFO] [stdout] 8f4e2620cfda8a74c4ac69c118d1d7dfbe6d5c6e5cb0a7b41a46719869eb111c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 28e050556e28a3c0a7fe3fe70ebb931ea8b8eaa6585c20bf34476a5ed640b4a2
[INFO] running `Command { std: "docker" "start" "-a" "28e050556e28a3c0a7fe3fe70ebb931ea8b8eaa6585c20bf34476a5ed640b4a2", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.103
[INFO] [stderr]    Compiling proc-macro2 v1.0.30
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling futures-core v0.3.17
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]     Checking futures-io v0.3.17
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]    Compiling typenum v1.14.0
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking fastrand v1.5.0
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]    Compiling futures-macro v0.3.17
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling futures-channel v0.3.17
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]    Compiling futures-task v0.3.17
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling futures-util v0.3.17
[INFO] [stderr]     Checking futures-sink v0.3.17
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]     Checking async-channel v1.6.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking socket2 v0.4.2
[INFO] [stderr]     Checking polling v2.1.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]    Compiling signal-hook v0.3.10
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]     Checking async-io v1.6.0
[INFO] [stderr]     Checking async-lock v2.4.0
[INFO] [stderr]     Checking async-executor v1.4.1
[INFO] [stderr]    Compiling heim-common v0.1.0-rc.1
[INFO] [stderr]     Checking nix v0.19.1
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking async-fs v1.5.0
[INFO] [stderr]    Compiling cc v1.0.71
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking tinyvec v1.5.0
[INFO] [stderr]     Checking async-process v1.2.0
[INFO] [stderr]     Checking async-net v1.6.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking smol v1.2.5
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling ahash v0.7.4
[INFO] [stderr]    Compiling platforms v1.0.3
[INFO] [stderr]     Checking smallvec v1.7.0
[INFO] [stderr]     Checking uom v0.30.0
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking instant v0.1.11
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]    Compiling heim-host v0.1.0-rc.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.14
[INFO] [stderr]    Compiling raw-cpuid v8.1.2
[INFO] [stderr]    Compiling async-trait v0.1.51
[INFO] [stderr]    Compiling libsqlite3-sys v0.23.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking block-buffer v0.9.0
[INFO] [stderr]    Compiling tokio v1.12.0
[INFO] [stderr]     Checking cpufeatures v0.2.1
[INFO] [stderr]     Checking macaddr v1.0.1
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking sha-1 v0.9.8
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking ordered-float v2.0.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking mio v0.7.13
[INFO] [stderr]    Compiling serde_json v1.0.79
[INFO] [stderr]     Checking hashlink v0.7.0
[INFO] [stderr]     Checking fallible-streaming-iterator v0.1.9
[INFO] [stderr]     Checking machine-uid v0.2.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling tokio-macros v1.5.0
[INFO] [stderr]     Checking pin-project v1.0.8
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking tungstenite v0.14.0
[INFO] [stderr]     Checking serde v1.0.136
[INFO] [stderr]     Checking futures-executor v0.3.17
[INFO] [stderr]     Checking futures v0.3.17
[INFO] [stderr]     Checking heim-runtime v0.1.0-rc.1
[INFO] [stderr]     Checking tokio-tungstenite v0.15.0
[INFO] [stderr]     Checking rusqlite v0.26.3
[INFO] [stderr]     Checking heim-cpu v0.1.0-rc.1
[INFO] [stderr]     Checking heim-net v0.1.0-rc.1
[INFO] [stderr]     Checking heim-virt v0.1.0-rc.1
[INFO] [stderr]     Checking heim-memory v0.1.0-rc.1
[INFO] [stderr]     Checking heim-disk v0.1.0-rc.1
[INFO] [stderr]     Checking heim-sensors v0.1.0-rc.1
[INFO] [stderr]     Checking heim-process v0.1.1-rc.1
[INFO] [stderr]     Checking heim v0.1.0-rc.1
[INFO] [stderr]     Checking rsm v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]  --> src/websocket/server/comm_receiver.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use serde_json;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `serde_json` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serde_json` is imported redundantly
[INFO] [stdout]  --> src/websocket/server/comm_receiver.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use serde_json;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `serde_json` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `update` is never used
[INFO] [stdout]   --> src/storage/mod.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub trait Storage {
[INFO] [stdout]    |           ------- method in this trait
[INFO] [stdout] 29 |     fn insert(&mut self, device: Device);
[INFO] [stdout] 30 |     fn update(&self, device: Device);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `update` is never used
[INFO] [stdout]   --> src/storage/mod.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 28 | pub trait Storage {
[INFO] [stdout]    |           ------- method in this trait
[INFO] [stdout] 29 |     fn insert(&mut self, device: Device);
[INFO] [stdout] 30 |     fn update(&self, device: Device);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 08s
[INFO] running `Command { std: "docker" "inspect" "28e050556e28a3c0a7fe3fe70ebb931ea8b8eaa6585c20bf34476a5ed640b4a2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28e050556e28a3c0a7fe3fe70ebb931ea8b8eaa6585c20bf34476a5ed640b4a2", kill_on_drop: false }`
[INFO] [stdout] 28e050556e28a3c0a7fe3fe70ebb931ea8b8eaa6585c20bf34476a5ed640b4a2