[INFO] updating cached repository https://github.com/rishabh-bector/Prolix
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 823d4e2faf7aec39935f81047675c06aa8f573ca
[INFO] checking rishabh-bector/Prolix against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frishabh-bector%2FProlix" "/workspace/builds/worker-14/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rishabh-bector/Prolix on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/rishabh-bector/Prolix
[INFO] finished tweaking git repo https://github.com/rishabh-bector/Prolix
[INFO] tweaked toml for git repo https://github.com/rishabh-bector/Prolix written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/rishabh-bector/Prolix already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 599421f2878c6f9dbf91c1cd0e9bdb2a7f6caeaafb6299649edc70b7df3b5eb1
[INFO] running `"docker" "start" "-a" "599421f2878c6f9dbf91c1cd0e9bdb2a7f6caeaafb6299649edc70b7df3b5eb1"`
[INFO] [stderr]    Compiling libc v0.2.59
[INFO] [stderr]    Compiling stackvector v1.0.6
[INFO] [stderr]    Compiling lexical-core v0.4.2
[INFO] [stderr]     Checking atty v0.2.12
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking nom v5.0.0
[INFO] [stderr]     Checking prolix v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `tag`
[INFO] [stderr]  --> src/grammars/common.rs:2:28
[INFO] [stderr]   |
[INFO] [stderr] 2 | use nom::bytes::complete::{tag, take_until};
[INFO] [stderr]   |                            ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `parse_alloc_string`
[INFO] [stderr]  --> src/grammars/plain.rs:1:48
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::grammars::common::{parse_alloc_int, parse_alloc_string};
[INFO] [stderr]   |                                                ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::interpreter::Interpreter`
[INFO] [stderr]  --> src/grammars/plain.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::interpreter::Interpreter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `MemType`
[INFO] [stderr]  --> src/grammars/plain.rs:4:42
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::memory::{AllocID, Allocation, MemType, Memory};
[INFO] [stderr]   |                                          ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::parser::Parser`
[INFO] [stderr]  --> src/grammars/plain.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use crate::parser::Parser;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::interpreter::Interpreter`
[INFO] [stderr]  --> src/grammars/variable.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::interpreter::Interpreter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Allocation`
[INFO] [stderr]  --> src/grammars/variable.rs:4:30
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::memory::{AllocID, Allocation, MemType, Memory};
[INFO] [stderr]   |                              ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::interpreter::Interpreter`
[INFO] [stderr]  --> src/grammars/mod.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use crate::interpreter::Interpreter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Allocation`
[INFO] [stderr]  --> src/interpreter.rs:6:21
[INFO] [stderr]   |
[INFO] [stderr] 6 | use crate::memory::{Allocation, Memory};
[INFO] [stderr]   |                     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `memory`
[INFO] [stderr]   --> src/grammars/plain.rs:32:23
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn execute(&self, memory: &mut Memory) -> Option<AllocID> {
[INFO] [stderr]    |                       ^^^^^^ help: consider prefixing with an underscore: `_memory`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_alloc_string`
[INFO] [stderr]   --> src/grammars/common.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub fn parse_alloc_string(line: &str) -> Option<&str> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `retrieve_alloc`
[INFO] [stderr]   --> src/memory.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn retrieve_alloc(&self, aid: AllocID) -> Option<&Allocation<'a>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `store_var`
[INFO] [stderr]   --> src/memory.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn store_var(&mut self, key: String, val: Allocation<'a>) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `store_const`
[INFO] [stderr]   --> src/memory.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn store_const(&mut self, key: String, val: Allocation<'a>) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `retrieve_var`
[INFO] [stderr]   --> src/memory.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn retrieve_var(&self, key: &'a str) -> &Allocation<'a> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `retrieve_const`
[INFO] [stderr]   --> src/memory.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn retrieve_const(&self, key: &'a str) -> &Allocation<'a> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `delete_var`
[INFO] [stderr]   --> src/memory.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     pub fn delete_var(&mut self, key: &'a str) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `STR`
[INFO] [stderr]   --> src/memory.rs:89:5
[INFO] [stderr]    |
[INFO] [stderr] 89 |     STR(&'a str),
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `NNE`
[INFO] [stderr]   --> src/memory.rs:91:5
[INFO] [stderr]    |
[INFO] [stderr] 91 |     NNE,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_str`
[INFO] [stderr]   --> src/memory.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     pub fn from_str(val: &'a str) -> Allocation<'a> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tag`
[INFO] [stderr]  --> src/grammars/common.rs:2:28
[INFO] [stderr]   |
[INFO] [stderr] 2 | use nom::bytes::complete::{tag, take_until};
[INFO] [stderr]   |                            ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `parse_alloc_string`
[INFO] [stderr]  --> src/grammars/plain.rs:1:48
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::grammars::common::{parse_alloc_int, parse_alloc_string};
[INFO] [stderr]   |                                                ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::interpreter::Interpreter`
[INFO] [stderr]  --> src/grammars/plain.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::interpreter::Interpreter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `MemType`
[INFO] [stderr]  --> src/grammars/plain.rs:4:42
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::memory::{AllocID, Allocation, MemType, Memory};
[INFO] [stderr]   |                                          ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::parser::Parser`
[INFO] [stderr]  --> src/grammars/plain.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use crate::parser::Parser;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::interpreter::Interpreter`
[INFO] [stderr]  --> src/grammars/variable.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::interpreter::Interpreter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Allocation`
[INFO] [stderr]  --> src/grammars/variable.rs:4:30
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::memory::{AllocID, Allocation, MemType, Memory};
[INFO] [stderr]   |                              ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::interpreter::Interpreter`
[INFO] [stderr]  --> src/grammars/mod.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use crate::interpreter::Interpreter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Allocation`
[INFO] [stderr]  --> src/interpreter.rs:6:21
[INFO] [stderr]   |
[INFO] [stderr] 6 | use crate::memory::{Allocation, Memory};
[INFO] [stderr]   |                     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `memory`
[INFO] [stderr]   --> src/grammars/plain.rs:32:23
[INFO] [stderr]    |
[INFO] [stderr] 32 |     fn execute(&self, memory: &mut Memory) -> Option<AllocID> {
[INFO] [stderr]    |                       ^^^^^^ help: consider prefixing with an underscore: `_memory`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse_alloc_string`
[INFO] [stderr]   --> src/grammars/common.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | pub fn parse_alloc_string(line: &str) -> Option<&str> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `retrieve_alloc`
[INFO] [stderr]   --> src/memory.rs:34:5
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn retrieve_alloc(&self, aid: AllocID) -> Option<&Allocation<'a>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `store_var`
[INFO] [stderr]   --> src/memory.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn store_var(&mut self, key: String, val: Allocation<'a>) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `store_const`
[INFO] [stderr]   --> src/memory.rs:47:5
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn store_const(&mut self, key: String, val: Allocation<'a>) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `retrieve_var`
[INFO] [stderr]   --> src/memory.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn retrieve_var(&self, key: &'a str) -> &Allocation<'a> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `retrieve_const`
[INFO] [stderr]   --> src/memory.rs:63:5
[INFO] [stderr]    |
[INFO] [stderr] 63 |     pub fn retrieve_const(&self, key: &'a str) -> &Allocation<'a> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `delete_var`
[INFO] [stderr]   --> src/memory.rs:70:5
[INFO] [stderr]    |
[INFO] [stderr] 70 |     pub fn delete_var(&mut self, key: &'a str) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `STR`
[INFO] [stderr]   --> src/memory.rs:89:5
[INFO] [stderr]    |
[INFO] [stderr] 89 |     STR(&'a str),
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `NNE`
[INFO] [stderr]   --> src/memory.rs:91:5
[INFO] [stderr]    |
[INFO] [stderr] 91 |     NNE,
[INFO] [stderr]    |     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_str`
[INFO] [stderr]   --> src/memory.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     pub fn from_str(val: &'a str) -> Allocation<'a> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.59s
[INFO] running `"docker" "inspect" "599421f2878c6f9dbf91c1cd0e9bdb2a7f6caeaafb6299649edc70b7df3b5eb1"`
[INFO] running `"docker" "rm" "-f" "599421f2878c6f9dbf91c1cd0e9bdb2a7f6caeaafb6299649edc70b7df3b5eb1"`
[INFO] [stdout] 599421f2878c6f9dbf91c1cd0e9bdb2a7f6caeaafb6299649edc70b7df3b5eb1