[INFO] cloning repository https://github.com/soemone/VM-Calc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/soemone/VM-Calc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsoemone%2FVM-Calc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsoemone%2FVM-Calc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 17671c78c0097f24810b34481b3133ba3a3bfd0b
[INFO] checking soemone/VM-Calc against try#8d46be77cd48fdbcced888d027457e2c9cf2aa16 for pr-142723
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsoemone%2FVM-Calc" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/soemone/VM-Calc on toolchain 8d46be77cd48fdbcced888d027457e2c9cf2aa16
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/soemone/VM-Calc
[INFO] finished tweaking git repo https://github.com/soemone/VM-Calc
[INFO] tweaked toml for git repo https://github.com/soemone/VM-Calc written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/soemone/VM-Calc 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" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "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 soemone/VM-Calc against try#8d46be77cd48fdbcced888d027457e2c9cf2aa16 for pr-142723
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsoemone%2FVM-Calc" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/soemone/VM-Calc on toolchain 8d46be77cd48fdbcced888d027457e2c9cf2aa16
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/soemone/VM-Calc
[INFO] finished tweaking git repo https://github.com/soemone/VM-Calc
[INFO] tweaked toml for git repo https://github.com/soemone/VM-Calc written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/soemone/VM-Calc 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" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ede591cf513756f15ba1670f1191dcd8530393f0f9eb5496bed3ed04a941b2ab
[INFO] running `Command { std: "docker" "start" "-a" "ede591cf513756f15ba1670f1191dcd8530393f0f9eb5496bed3ed04a941b2ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ede591cf513756f15ba1670f1191dcd8530393f0f9eb5496bed3ed04a941b2ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ede591cf513756f15ba1670f1191dcd8530393f0f9eb5496bed3ed04a941b2ab", kill_on_drop: false }`
[INFO] [stdout] ede591cf513756f15ba1670f1191dcd8530393f0f9eb5496bed3ed04a941b2ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6bd2cd6d7bf52b84ac70110522adccc383c78564b6b8bf3d82649df964088594
[INFO] running `Command { std: "docker" "start" "-a" "6bd2cd6d7bf52b84ac70110522adccc383c78564b6b8bf3d82649df964088594", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling serde v1.0.209
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.76
[INFO] [stderr]    Compiling serde_derive v1.0.209
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking vm-calc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `serde::de::value`
[INFO] [stdout]  --> src/vm.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use serde::de::value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `serde::de::value`
[INFO] [stdout]  --> src/vm.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use serde::de::value;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]  --> src/tests/test_lexer.rs:7:9
[INFO] [stdout]   |
[INFO] [stdout] 7 |     use super::*;
[INFO] [stdout]   |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `generate_expressions` is never used
[INFO] [stdout]   --> src/parser.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl<'a> Parser<'a> {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn generate_expressions(&mut self) -> Vec<Result<Rc<Tree<'a>>, Error>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from_range` is never used
[INFO] [stdout]   --> src/utils.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl Span {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 27 |     pub fn from_range(range: Range<usize>) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `BinOnNaN` is never constructed
[INFO] [stdout]  --> src/vm.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub enum VMError {
[INFO] [stdout]   |          ------- variant in this enum
[INFO] [stdout] 8 |     BinOnNaN,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/lexer.rs:13:25
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(source: &'_ str) -> Result<Lexer, ()> {
[INFO] [stdout]    |                         ^^                ----- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 13 -     pub fn new(source: &'_ str) -> Result<Lexer, ()> {
[INFO] [stdout] 13 +     pub fn new(source: &str) -> Result<Lexer<'_>, ()> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `BinOnNaN` is never constructed
[INFO] [stdout]  --> src/vm.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub enum VMError {
[INFO] [stdout]   |          ------- variant in this enum
[INFO] [stdout] 8 |     BinOnNaN,
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/lexer.rs:13:25
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(source: &'_ str) -> Result<Lexer, ()> {
[INFO] [stdout]    |                         ^^                ----- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 13 -     pub fn new(source: &'_ str) -> Result<Lexer, ()> {
[INFO] [stdout] 13 +     pub fn new(source: &str) -> Result<Lexer<'_>, ()> {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.37s
[INFO] running `Command { std: "docker" "inspect" "6bd2cd6d7bf52b84ac70110522adccc383c78564b6b8bf3d82649df964088594", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bd2cd6d7bf52b84ac70110522adccc383c78564b6b8bf3d82649df964088594", kill_on_drop: false }`
[INFO] [stdout] 6bd2cd6d7bf52b84ac70110522adccc383c78564b6b8bf3d82649df964088594