[INFO] cloning repository https://github.com/AnonymousDapper/compute
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AnonymousDapper/compute" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnonymousDapper%2Fcompute"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnonymousDapper%2Fcompute'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0d62b0396b67a2336be2add7736dc6702e18657e
[INFO] checking AnonymousDapper/compute against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnonymousDapper%2Fcompute" "/workspace/builds/worker-12/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/AnonymousDapper/compute 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/AnonymousDapper/compute
[INFO] finished tweaking git repo https://github.com/AnonymousDapper/compute
[INFO] tweaked toml for git repo https://github.com/AnonymousDapper/compute written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/AnonymousDapper/compute 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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 72b2e99cd4e4c39a0833150557494c1ca07b2d3ac37e8fd05f2a29a602d5c946
[INFO] running `"docker" "start" "-a" "72b2e99cd4e4c39a0833150557494c1ca07b2d3ac37e8fd05f2a29a602d5c946"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking getopts v0.2.17
[INFO] [stderr]     Checking nix v0.5.1
[INFO] [stderr]     Checking rustyline v1.0.0
[INFO] [stderr]     Checking compute v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/component/scanner.rs:64:20
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let peek_idx = (self.index + 1);
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/component/scanner.rs:64:20
[INFO] [stderr]    |
[INFO] [stderr] 64 |     let peek_idx = (self.index + 1);
[INFO] [stderr]    |                    ^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `verbosity` is assigned to, but never used
[INFO] [stderr]    --> src/main.rs:136:7
[INFO] [stderr]     |
[INFO] [stderr] 136 |   let verbosity: usize;
[INFO] [stderr]     |       ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]     = note: consider using `_verbosity` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `verbosity` is never read
[INFO] [stderr]    --> src/main.rs:148:5
[INFO] [stderr]     |
[INFO] [stderr] 148 |     verbosity = matches.opt_count("v");
[INFO] [stderr]     |     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `verbosity` is never read
[INFO] [stderr]    --> src/main.rs:150:5
[INFO] [stderr]     |
[INFO] [stderr] 150 |     verbosity = 0;
[INFO] [stderr]     |     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable `verbosity` is assigned to, but never used
[INFO] [stderr]    --> src/main.rs:136:7
[INFO] [stderr]     |
[INFO] [stderr] 136 |   let verbosity: usize;
[INFO] [stderr]     |       ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr]     = note: consider using `_verbosity` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `verbosity` is never read
[INFO] [stderr]    --> src/main.rs:148:5
[INFO] [stderr]     |
[INFO] [stderr] 148 |     verbosity = matches.opt_count("v");
[INFO] [stderr]     |     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `verbosity` is never read
[INFO] [stderr]    --> src/main.rs:150:5
[INFO] [stderr]     |
[INFO] [stderr] 150 |     verbosity = 0;
[INFO] [stderr]     |     ^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `source`
[INFO] [stderr]  --> src/component/scanner.rs:9:3
[INFO] [stderr]   |
[INFO] [stderr] 9 |   source: String,
[INFO] [stderr]   |   ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek`
[INFO] [stderr]   --> src/component/scanner.rs:63:3
[INFO] [stderr]    |
[INFO] [stderr] 63 |   fn peek(&self) -> char {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Identifier`
[INFO] [stderr]   --> src/component/token.rs:66:3
[INFO] [stderr]    |
[INFO] [stderr] 66 |   Identifier(String),
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Float`
[INFO] [stderr]   --> src/component/token.rs:67:3
[INFO] [stderr]    |
[INFO] [stderr] 67 |   Float(f32),
[INFO] [stderr]    |   ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SciNotFloat`
[INFO] [stderr]   --> src/component/token.rs:69:3
[INFO] [stderr]    |
[INFO] [stderr] 69 |   SciNotFloat(f32),
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SciNotInt`
[INFO] [stderr]   --> src/component/token.rs:70:3
[INFO] [stderr]    |
[INFO] [stderr] 70 |   SciNotInt(i32),
[INFO] [stderr]    |   ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/component/logger.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn new(line: u32, column: u32) -> Position {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `span_to`
[INFO] [stderr]   --> src/component/logger.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn span_to(self, to: Position) -> Span {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `forward`
[INFO] [stderr]   --> src/component/logger.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn forward(mut self, amount: u32) -> Position {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `backward`
[INFO] [stderr]   --> src/component/logger.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub fn backward(mut self, amount: u32) -> Position {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Span`
[INFO] [stderr]   --> src/component/logger.rs:43:3
[INFO] [stderr]    |
[INFO] [stderr] 43 |   pub struct Span {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/component/logger.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub fn new(start: Position, end: Position) -> Span {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `merge`
[INFO] [stderr]   --> src/component/logger.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn merge(self, other: Span) -> Span {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Warning`
[INFO] [stderr]   --> src/component/logger.rs:69:3
[INFO] [stderr]    |
[INFO] [stderr] 69 |   Warning,
[INFO] [stderr]    |   ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Message`
[INFO] [stderr]   --> src/component/logger.rs:70:3
[INFO] [stderr]    |
[INFO] [stderr] 70 |   Message,
[INFO] [stderr]    |   ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Debug`
[INFO] [stderr]   --> src/component/logger.rs:71:3
[INFO] [stderr]    |
[INFO] [stderr] 71 |   Debug
[INFO] [stderr]    |   ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `warn`
[INFO] [stderr]   --> src/component/logger.rs:89:1
[INFO] [stderr]    |
[INFO] [stderr] 89 | pub fn warn<T>(msg: T, line: u32, column: u32) where T: Into<String> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `log`
[INFO] [stderr]   --> src/component/logger.rs:93:1
[INFO] [stderr]    |
[INFO] [stderr] 93 | pub fn log<T>(msg: T, line: u32, column: u32) where T: Into<String> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `debug`
[INFO] [stderr]   --> src/component/logger.rs:97:1
[INFO] [stderr]    |
[INFO] [stderr] 97 | pub fn debug<T>(msg: T, line: u32, column: u32) where T: Into<String> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `source`
[INFO] [stderr]  --> src/component/scanner.rs:9:3
[INFO] [stderr]   |
[INFO] [stderr] 9 |   source: String,
[INFO] [stderr]   |   ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek`
[INFO] [stderr]   --> src/component/scanner.rs:63:3
[INFO] [stderr]    |
[INFO] [stderr] 63 |   fn peek(&self) -> char {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Identifier`
[INFO] [stderr]   --> src/component/token.rs:66:3
[INFO] [stderr]    |
[INFO] [stderr] 66 |   Identifier(String),
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Float`
[INFO] [stderr]   --> src/component/token.rs:67:3
[INFO] [stderr]    |
[INFO] [stderr] 67 |   Float(f32),
[INFO] [stderr]    |   ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SciNotFloat`
[INFO] [stderr]   --> src/component/token.rs:69:3
[INFO] [stderr]    |
[INFO] [stderr] 69 |   SciNotFloat(f32),
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SciNotInt`
[INFO] [stderr]   --> src/component/token.rs:70:3
[INFO] [stderr]    |
[INFO] [stderr] 70 |   SciNotInt(i32),
[INFO] [stderr]    |   ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/component/logger.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn new(line: u32, column: u32) -> Position {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `span_to`
[INFO] [stderr]   --> src/component/logger.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     pub fn span_to(self, to: Position) -> Span {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `forward`
[INFO] [stderr]   --> src/component/logger.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn forward(mut self, amount: u32) -> Position {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `backward`
[INFO] [stderr]   --> src/component/logger.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub fn backward(mut self, amount: u32) -> Position {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Span`
[INFO] [stderr]   --> src/component/logger.rs:43:3
[INFO] [stderr]    |
[INFO] [stderr] 43 |   pub struct Span {
[INFO] [stderr]    |   ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/component/logger.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub fn new(start: Position, end: Position) -> Span {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `merge`
[INFO] [stderr]   --> src/component/logger.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     pub fn merge(self, other: Span) -> Span {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Warning`
[INFO] [stderr]   --> src/component/logger.rs:69:3
[INFO] [stderr]    |
[INFO] [stderr] 69 |   Warning,
[INFO] [stderr]    |   ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Message`
[INFO] [stderr]   --> src/component/logger.rs:70:3
[INFO] [stderr]    |
[INFO] [stderr] 70 |   Message,
[INFO] [stderr]    |   ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Debug`
[INFO] [stderr]   --> src/component/logger.rs:71:3
[INFO] [stderr]    |
[INFO] [stderr] 71 |   Debug
[INFO] [stderr]    |   ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `warn`
[INFO] [stderr]   --> src/component/logger.rs:89:1
[INFO] [stderr]    |
[INFO] [stderr] 89 | pub fn warn<T>(msg: T, line: u32, column: u32) where T: Into<String> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `log`
[INFO] [stderr]   --> src/component/logger.rs:93:1
[INFO] [stderr]    |
[INFO] [stderr] 93 | pub fn log<T>(msg: T, line: u32, column: u32) where T: Into<String> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `debug`
[INFO] [stderr]   --> src/component/logger.rs:97:1
[INFO] [stderr]    |
[INFO] [stderr] 97 | pub fn debug<T>(msg: T, line: u32, column: u32) where T: Into<String> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.82s
[INFO] running `"docker" "inspect" "72b2e99cd4e4c39a0833150557494c1ca07b2d3ac37e8fd05f2a29a602d5c946"`
[INFO] running `"docker" "rm" "-f" "72b2e99cd4e4c39a0833150557494c1ca07b2d3ac37e8fd05f2a29a602d5c946"`
[INFO] [stdout] 72b2e99cd4e4c39a0833150557494c1ca07b2d3ac37e8fd05f2a29a602d5c946