[INFO] cloning repository https://github.com/favilo/tiger
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/favilo/tiger" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffavilo%2Ftiger", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffavilo%2Ftiger'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b3786a56a2d135983059e655270ac2fba555aab8
[INFO] checking favilo/tiger against master#9fa580b1175018b0a276b0bc68f9827a106f7260 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffavilo%2Ftiger" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/favilo/tiger on toolchain 9fa580b1175018b0a276b0bc68f9827a106f7260
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/favilo/tiger
[INFO] finished tweaking git repo https://github.com/favilo/tiger
[INFO] tweaked toml for git repo https://github.com/favilo/tiger written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/favilo/tiger already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f87d676966b9b97841ec8996b1ab864180ec16d7bfcfea704d6fddb81ce5cc61
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f87d676966b9b97841ec8996b1ab864180ec16d7bfcfea704d6fddb81ce5cc61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f87d676966b9b97841ec8996b1ab864180ec16d7bfcfea704d6fddb81ce5cc61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f87d676966b9b97841ec8996b1ab864180ec16d7bfcfea704d6fddb81ce5cc61", kill_on_drop: false }`
[INFO] [stdout] f87d676966b9b97841ec8996b1ab864180ec16d7bfcfea704d6fddb81ce5cc61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 76ad36e5720e2291b69dea10673b055b9c43f84fe0914d304552d217d97a2f5d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "76ad36e5720e2291b69dea10673b055b9c43f84fe0914d304552d217d97a2f5d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling arrayvec v0.4.12
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling memchr v2.3.0
[INFO] [stderr]     Checking static_assertions v0.3.4
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling nom v5.1.0
[INFO] [stderr]    Compiling lexical-core v0.4.6
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking colored v1.9.2
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking chrono v0.4.10
[INFO] [stderr]     Checking simple_logger v1.5.0
[INFO] [stderr]     Checking tiger v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `BufRead`, `BufReader`
[INFO] [stdout]  --> src/main.rs:5:22
[INFO] [stdout]   |
[INFO] [stdout] 5 |     io::{prelude::*, BufRead, BufReader},
[INFO] [stdout]   |                      ^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ParseError`
[INFO] [stdout]  --> src/main.rs:9:27
[INFO] [stdout]   |
[INFO] [stdout] 9 | use lang::{parse_program, ParseError};
[INFO] [stdout]   |                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `char`, `many1`, `multispace0`
[INFO] [stdout]  --> src/lang.rs:4:35
[INFO] [stdout]   |
[INFO] [stdout] 4 |     character::complete::{alpha1, char, digit1, multispace0, multispace1},
[INFO] [stdout]   |                                   ^^^^          ^^^^^^^^^^^
[INFO] [stdout] 5 |     combinator::all_consuming,
[INFO] [stdout] 6 |     multi::{many0, many1},
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BufRead`, `BufReader`
[INFO] [stdout]  --> src/main.rs:5:22
[INFO] [stdout]   |
[INFO] [stdout] 5 |     io::{prelude::*, BufRead, BufReader},
[INFO] [stdout]   |                      ^^^^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ParseError`
[INFO] [stdout]  --> src/main.rs:9:27
[INFO] [stdout]   |
[INFO] [stdout] 9 | use lang::{parse_program, ParseError};
[INFO] [stdout]   |                           ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `char`, `many1`, `multispace0`
[INFO] [stdout]  --> src/lang.rs:4:35
[INFO] [stdout]   |
[INFO] [stdout] 4 |     character::complete::{alpha1, char, digit1, multispace0, multispace1},
[INFO] [stdout]   |                                   ^^^^          ^^^^^^^^^^^
[INFO] [stdout] 5 |     combinator::all_consuming,
[INFO] [stdout] 6 |     multi::{many0, many1},
[INFO] [stdout]   |                    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Plus`
[INFO] [stdout]   --> src/lang.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Plus,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Minus`
[INFO] [stdout]   --> src/lang.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     Minus,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Times`
[INFO] [stdout]   --> src/lang.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     Times,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Divide`
[INFO] [stdout]   --> src/lang.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     Divide,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `InfixOp`
[INFO] [stdout]   --> src/lang.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | /     InfixOp {
[INFO] [stdout] 37 | |         op_type: Op,
[INFO] [stdout] 38 | |         first: Box<Expression>,
[INFO] [stdout] 39 | |         second: Box<Expression>,
[INFO] [stdout] 40 | |     },
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Plus`
[INFO] [stdout]   --> src/lang.rs:18:5
[INFO] [stdout]    |
[INFO] [stdout] 18 |     Plus,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Minus`
[INFO] [stdout]   --> src/lang.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 19 |     Minus,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Times`
[INFO] [stdout]   --> src/lang.rs:20:5
[INFO] [stdout]    |
[INFO] [stdout] 20 |     Times,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Divide`
[INFO] [stdout]   --> src/lang.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 |     Divide,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `InfixOp`
[INFO] [stdout]   --> src/lang.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 | /     InfixOp {
[INFO] [stdout] 37 | |         op_type: Op,
[INFO] [stdout] 38 | |         first: Box<Expression>,
[INFO] [stdout] 39 | |         second: Box<Expression>,
[INFO] [stdout] 40 | |     },
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.50s
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "76ad36e5720e2291b69dea10673b055b9c43f84fe0914d304552d217d97a2f5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76ad36e5720e2291b69dea10673b055b9c43f84fe0914d304552d217d97a2f5d", kill_on_drop: false }`
[INFO] [stdout] 76ad36e5720e2291b69dea10673b055b9c43f84fe0914d304552d217d97a2f5d