[INFO] cloning repository https://github.com/sylvain-reynaud/graphdb-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sylvain-reynaud/graphdb-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsylvain-reynaud%2Fgraphdb-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsylvain-reynaud%2Fgraphdb-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7e10d2b8d94c76b4efe8cd6ad5ba6310fe0d4c27
[INFO] checking sylvain-reynaud/graphdb-rs against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsylvain-reynaud%2Fgraphdb-rs" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sylvain-reynaud/graphdb-rs
[INFO] finished tweaking git repo https://github.com/sylvain-reynaud/graphdb-rs
[INFO] tweaked toml for git repo https://github.com/sylvain-reynaud/graphdb-rs written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sylvain-reynaud/graphdb-rs on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sylvain-reynaud/graphdb-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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking sylvain-reynaud/graphdb-rs against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsylvain-reynaud%2Fgraphdb-rs" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sylvain-reynaud/graphdb-rs
[INFO] finished tweaking git repo https://github.com/sylvain-reynaud/graphdb-rs
[INFO] tweaked toml for git repo https://github.com/sylvain-reynaud/graphdb-rs written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sylvain-reynaud/graphdb-rs on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sylvain-reynaud/graphdb-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" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 40dea0f8458833d46b23249985b599197307ab98ae04adce97e09a0221489f12
[INFO] running `Command { std: "docker" "start" "-a" "40dea0f8458833d46b23249985b599197307ab98ae04adce97e09a0221489f12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40dea0f8458833d46b23249985b599197307ab98ae04adce97e09a0221489f12", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40dea0f8458833d46b23249985b599197307ab98ae04adce97e09a0221489f12", kill_on_drop: false }`
[INFO] [stdout] 40dea0f8458833d46b23249985b599197307ab98ae04adce97e09a0221489f12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e039c4f89f9fdcf01b351d8bafeb8e77b05566d40cb0d0e940159c7bfb78295e
[INFO] running `Command { std: "docker" "start" "-a" "e039c4f89f9fdcf01b351d8bafeb8e77b05566d40cb0d0e940159c7bfb78295e", kill_on_drop: false }`
[INFO] [stderr]     Checking basic_and_recursive_traversal v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `Graph` is never constructed
[INFO] [stdout]   --> src/Graph.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Graph {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Property` is never constructed
[INFO] [stdout]   --> src/Graph.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | struct Property {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Vertex` is never constructed
[INFO] [stdout]   --> src/Graph.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 | struct Vertex {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `VecExt` is never used
[INFO] [stdout]   --> src/Graph.rs:27:7
[INFO] [stdout]    |
[INFO] [stdout] 27 | trait VecExt {
[INFO] [stdout]    |       ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Edge` is never constructed
[INFO] [stdout]   --> src/Graph.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 | struct Edge {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `addV`, `addV_with_properties`, `addE`, `V`, and `E` are never used
[INFO] [stdout]    --> src/Graph.rs:86:8
[INFO] [stdout]     |
[INFO] [stdout]  85 | impl Graph {
[INFO] [stdout]     | ---------- associated items in this implementation
[INFO] [stdout]  86 |     fn new(name: String) -> Graph {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout]  94 |     fn addV(&mut self, name: String) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 102 |     fn addV_with_properties(&mut self, name: String, properties: Vec<Property>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 110 |     fn addE(&mut self, name: String) -> EdgeBuilder {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |     fn V(&self) -> &Vec<Vertex> {
[INFO] [stdout]     |        ^
[INFO] [stdout] ...
[INFO] [stdout] 121 |     fn E(&self) -> &Vec<Edge> {
[INFO] [stdout]     |        ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `EdgeBuilder` is never constructed
[INFO] [stdout]    --> src/Graph.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 | struct EdgeBuilder<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `from` is never used
[INFO] [stdout]    --> src/Graph.rs:132:8
[INFO] [stdout]     |
[INFO] [stdout] 131 | impl<'a> EdgeBuilder<'a> {
[INFO] [stdout]     | ------------------------ method in this implementation
[INFO] [stdout] 132 |     fn from(self, from: String) -> EdgeToBuilder<'a> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `EdgeToBuilder` is never constructed
[INFO] [stdout]    --> src/Graph.rs:140:8
[INFO] [stdout]     |
[INFO] [stdout] 140 | struct EdgeToBuilder<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to` is never used
[INFO] [stdout]    --> src/Graph.rs:146:8
[INFO] [stdout]     |
[INFO] [stdout] 145 | impl<'a> EdgeToBuilder<'a> {
[INFO] [stdout]     | -------------------------- method in this implementation
[INFO] [stdout] 146 |     fn to(self, to: String) {
[INFO] [stdout]     |        ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Graph` should have a snake case name
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | mod Graph;
[INFO] [stdout]   |     ^^^^^ help: convert the identifier to snake case: `graph`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait method `outE` should have a snake case name
[INFO] [stdout]   --> src/Graph.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn outE(&self, edge_name: &str) -> Vec<&Edge>;
[INFO] [stdout]    |        ^^^^ help: convert the identifier to snake case: `out_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait method `inE` should have a snake case name
[INFO] [stdout]   --> src/Graph.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn inE(&self, edge_name: &str) -> Vec<&Edge>;
[INFO] [stdout]    |        ^^^ help: convert the identifier to snake case: `in_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `addV` should have a snake case name
[INFO] [stdout]   --> src/Graph.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn addV(&mut self, name: String) {
[INFO] [stdout]    |        ^^^^ help: convert the identifier to snake case: `add_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `addV_with_properties` should have a snake case name
[INFO] [stdout]    --> src/Graph.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn addV_with_properties(&mut self, name: String, properties: Vec<Property>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `add_v_with_properties`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `addE` should have a snake case name
[INFO] [stdout]    --> src/Graph.rs:110:8
[INFO] [stdout]     |
[INFO] [stdout] 110 |     fn addE(&mut self, name: String) -> EdgeBuilder {
[INFO] [stdout]     |        ^^^^ help: convert the identifier to snake case: `add_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/Graph.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |     fn addE(&mut self, name: String) -> EdgeBuilder {
[INFO] [stdout]     |             ^^^^^^^^^                   ----------- the same lifetime is hidden here
[INFO] [stdout]     |             |
[INFO] [stdout]     |             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 110 |     fn addE(&mut self, name: String) -> EdgeBuilder<'_> {
[INFO] [stdout]     |                                                    ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `V` should have a snake case name
[INFO] [stdout]    --> src/Graph.rs:117:8
[INFO] [stdout]     |
[INFO] [stdout] 117 |     fn V(&self) -> &Vec<Vertex> {
[INFO] [stdout]     |        ^ help: convert the identifier to snake case (notice the capitalization): `v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `E` should have a snake case name
[INFO] [stdout]    --> src/Graph.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn E(&self) -> &Vec<Edge> {
[INFO] [stdout]     |        ^ help: convert the identifier to snake case: `e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/Graph.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct Graph {
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] 11 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `inE` is never used
[INFO] [stdout]   --> src/Graph.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 27 | trait VecExt {
[INFO] [stdout]    |       ------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 32 |     fn inE(&self, edge_name: &str) -> Vec<&Edge>;
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `to` is never read
[INFO] [stdout]   --> src/Graph.rs:82:5
[INFO] [stdout]    |
[INFO] [stdout] 79 | struct Edge {
[INFO] [stdout]    |        ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 82 |     to: String,
[INFO] [stdout]    |     ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: module `Graph` should have a snake case name
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | mod Graph;
[INFO] [stdout]   |     ^^^^^ help: convert the identifier to snake case: `graph`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait method `outE` should have a snake case name
[INFO] [stdout]   --> src/Graph.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 |     fn outE(&self, edge_name: &str) -> Vec<&Edge>;
[INFO] [stdout]    |        ^^^^ help: convert the identifier to snake case: `out_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait method `inE` should have a snake case name
[INFO] [stdout]   --> src/Graph.rs:32:8
[INFO] [stdout]    |
[INFO] [stdout] 32 |     fn inE(&self, edge_name: &str) -> Vec<&Edge>;
[INFO] [stdout]    |        ^^^ help: convert the identifier to snake case: `in_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `addV` should have a snake case name
[INFO] [stdout]   --> src/Graph.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn addV(&mut self, name: String) {
[INFO] [stdout]    |        ^^^^ help: convert the identifier to snake case: `add_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `addV_with_properties` should have a snake case name
[INFO] [stdout]    --> src/Graph.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn addV_with_properties(&mut self, name: String, properties: Vec<Property>) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `add_v_with_properties`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `addE` should have a snake case name
[INFO] [stdout]    --> src/Graph.rs:110:8
[INFO] [stdout]     |
[INFO] [stdout] 110 |     fn addE(&mut self, name: String) -> EdgeBuilder {
[INFO] [stdout]     |        ^^^^ help: convert the identifier to snake case: `add_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/Graph.rs:110:13
[INFO] [stdout]     |
[INFO] [stdout] 110 |     fn addE(&mut self, name: String) -> EdgeBuilder {
[INFO] [stdout]     |             ^^^^^^^^^                   ----------- the same lifetime is hidden here
[INFO] [stdout]     |             |
[INFO] [stdout]     |             the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 110 |     fn addE(&mut self, name: String) -> EdgeBuilder<'_> {
[INFO] [stdout]     |                                                    ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `V` should have a snake case name
[INFO] [stdout]    --> src/Graph.rs:117:8
[INFO] [stdout]     |
[INFO] [stdout] 117 |     fn V(&self) -> &Vec<Vertex> {
[INFO] [stdout]     |        ^ help: convert the identifier to snake case (notice the capitalization): `v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `E` should have a snake case name
[INFO] [stdout]    --> src/Graph.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn E(&self) -> &Vec<Edge> {
[INFO] [stdout]     |        ^ help: convert the identifier to snake case: `e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "e039c4f89f9fdcf01b351d8bafeb8e77b05566d40cb0d0e940159c7bfb78295e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e039c4f89f9fdcf01b351d8bafeb8e77b05566d40cb0d0e940159c7bfb78295e", kill_on_drop: false }`
[INFO] [stdout] e039c4f89f9fdcf01b351d8bafeb8e77b05566d40cb0d0e940159c7bfb78295e