[INFO] cloning repository https://github.com/SolarLiner/mfc-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/SolarLiner/mfc-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSolarLiner%2Fmfc-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSolarLiner%2Fmfc-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b881c1af2661bc9e7b166f0e719bafa90c9076fb
[INFO] checking SolarLiner/mfc-rs against master#ab26b175979ee7b2cb3302dce204b99df96f7efb for pr-157696
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FSolarLiner%2Fmfc-rs" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/SolarLiner/mfc-rs
[INFO] finished tweaking git repo https://github.com/SolarLiner/mfc-rs
[INFO] tweaked toml for git repo https://github.com/SolarLiner/mfc-rs written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/SolarLiner/mfc-rs on toolchain ab26b175979ee7b2cb3302dce204b99df96f7efb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab26b175979ee7b2cb3302dce204b99df96f7efb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/SolarLiner/mfc-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" "+ab26b175979ee7b2cb3302dce204b99df96f7efb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 7ab55297c39265bf2ce65476bc810d80fcf13b00cc015c10a3bba67e7bd1e71c
[INFO] running `Command { std: "docker" "start" "7ab55297c39265bf2ce65476bc810d80fcf13b00cc015c10a3bba67e7bd1e71c", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "inspect" "7ab55297c39265bf2ce65476bc810d80fcf13b00cc015c10a3bba67e7bd1e71c", kill_on_drop: false }`
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[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling unicode-xid v0.2.0
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[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking phf_shared v0.7.24
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling ucd-trie v0.1.2
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking fnv v1.0.6
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[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling pest v2.1.2
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
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[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]     Checking smallstr v0.1.0
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[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]     Checking unicode-normalization v0.1.12
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[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]    Compiling pest_meta v2.1.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking from-pest v0.3.1
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[INFO] [stderr]    Compiling phf_generator v0.7.24
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[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling pest_generator v2.1.1
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[INFO] [stderr]     Checking mfc-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `CAst::*`
[INFO] [stdout]    --> src/parse.rs:152:9
[INFO] [stdout]     |
[INFO] [stdout] 152 |     use CAst::*;
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `CAst::*`
[INFO] [stdout]    --> src/parse.rs:152:9
[INFO] [stdout]     |
[INFO] [stdout] 152 |     use CAst::*;
[INFO] [stdout]     |         ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/env.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let mut frame = self.top_frame_or_new();
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/env.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let mut frame = self.top_frame_or_new();
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Neg` is never constructed
[INFO] [stdout]   --> src/ast.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub enum Unop {
[INFO] [stdout]    |          ---- variant in this enum
[INFO] [stdout] 30 |     Neg,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Unop` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `EUnop` is never constructed
[INFO] [stdout]   --> src/ast.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub enum EAst {
[INFO] [stdout]    |          ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 43 |     EUnop(Unop, BEAst),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `EAst` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `lookup_full` and `pop_frame` are never used
[INFO] [stdout]   --> src/env.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Env {
[INFO] [stdout]    | -------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 63 |     pub fn lookup_full(&self, x: &str) -> Option<usize> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 97 |     pub fn pop_frame(&mut self) -> Option<Frame> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_complete` is never used
[INFO] [stdout]   --> src/parse.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn is_complete(input: &str) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `QUnop`, `QSet`, `QLd`, and `QPop` are never constructed
[INFO] [stdout]   --> src/quads.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub enum Quad {
[INFO] [stdout]    |          ---- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 13 |     QUnop(Unop, String, String),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 14 |     QSet(String, String),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     QLd(String, String),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     QPop(String),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Quad` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/parse.rs:46:25
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn parse_raw(input: &str) -> Result<Pairs<Rule>, Error<Rule>> {
[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] 46 | pub fn parse_raw(input: &str) -> Result<Pairs<'_, Rule>, Error<Rule>> {
[INFO] [stdout]    |                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Neg` is never constructed
[INFO] [stdout]   --> src/ast.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub enum Unop {
[INFO] [stdout]    |          ---- variant in this enum
[INFO] [stdout] 30 |     Neg,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Unop` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `EUnop` is never constructed
[INFO] [stdout]   --> src/ast.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub enum EAst {
[INFO] [stdout]    |          ---- variant in this enum
[INFO] [stdout] ...
[INFO] [stdout] 43 |     EUnop(Unop, BEAst),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `EAst` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `lookup_full` and `pop_frame` are never used
[INFO] [stdout]   --> src/env.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 28 | impl Env {
[INFO] [stdout]    | -------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 63 |     pub fn lookup_full(&self, x: &str) -> Option<usize> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 97 |     pub fn pop_frame(&mut self) -> Option<Frame> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `is_complete` is never used
[INFO] [stdout]   --> src/parse.rs:30:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn is_complete(input: &str) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `QUnop`, `QSet`, `QLd`, and `QPop` are never constructed
[INFO] [stdout]   --> src/quads.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub enum Quad {
[INFO] [stdout]    |          ---- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 13 |     QUnop(Unop, String, String),
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 14 |     QSet(String, String),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 17 |     QLd(String, String),
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 20 |     QPop(String),
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Quad` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/parse.rs:46:25
[INFO] [stdout]    |
[INFO] [stdout] 46 | pub fn parse_raw(input: &str) -> Result<Pairs<Rule>, Error<Rule>> {
[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] 46 | pub fn parse_raw(input: &str) -> Result<Pairs<'_, Rule>, Error<Rule>> {
[INFO] [stdout]    |                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.50s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v4.2.3, terminfo v0.6.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "7ab55297c39265bf2ce65476bc810d80fcf13b00cc015c10a3bba67e7bd1e71c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ab55297c39265bf2ce65476bc810d80fcf13b00cc015c10a3bba67e7bd1e71c", kill_on_drop: false }`
[INFO] [stdout] 7ab55297c39265bf2ce65476bc810d80fcf13b00cc015c10a3bba67e7bd1e71c
