[INFO] fetching crate gantelet 0.3.1-alpha.3...
[INFO] checking gantelet-0.3.1-alpha.3 against master#af3c6e733a40e671550e0f0f5aeecaa13772ba56 for pr-74989
[INFO] extracting crate gantelet 0.3.1-alpha.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate gantelet 0.3.1-alpha.3 on toolchain af3c6e733a40e671550e0f0f5aeecaa13772ba56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gantelet 0.3.1-alpha.3
[INFO] finished tweaking crates.io crate gantelet 0.3.1-alpha.3
[INFO] tweaked toml for crates.io crate gantelet 0.3.1-alpha.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ea9d10d4d8b7a1f25f1f5247044ed4dd6d48a78685ce005f51381a765d3f6bf7
[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" "ea9d10d4d8b7a1f25f1f5247044ed4dd6d48a78685ce005f51381a765d3f6bf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea9d10d4d8b7a1f25f1f5247044ed4dd6d48a78685ce005f51381a765d3f6bf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea9d10d4d8b7a1f25f1f5247044ed4dd6d48a78685ce005f51381a765d3f6bf7", kill_on_drop: false }`
[INFO] [stdout] ea9d10d4d8b7a1f25f1f5247044ed4dd6d48a78685ce005f51381a765d3f6bf7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f070adca9886d8e21c0cb37d7c67379eeb775de2a11bb56b72884a495fc223b7
[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" "f070adca9886d8e21c0cb37d7c67379eeb775de2a11bb56b72884a495fc223b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking number_prefix v0.3.0
[INFO] [stderr]     Checking seahash v3.0.7
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking terminal_size v0.1.13
[INFO] [stderr]     Checking termios v0.3.2
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking console v0.12.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]     Checking xoroshiro128 v0.3.0
[INFO] [stderr]     Checking indicatif v0.15.0
[INFO] [stderr]    Compiling fasthash-sys v0.3.2
[INFO] [stderr]     Checking fasthash v0.4.0
[INFO] [stderr]     Checking gantelet v0.3.1-alpha.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/cooccur.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::hash::BuildHasherDefault`
[INFO] [stdout]  --> src/cooccur.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::hash::BuildHasherDefault;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write as IoWrite`
[INFO] [stdout]  --> src/cooccur.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::Write as IoWrite;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fasthash::xx::Hasher64`
[INFO] [stdout]  --> src/cooccur.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use fasthash::xx::Hasher64;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `indicatif`
[INFO] [stdout]  --> src/cooccur.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use indicatif;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashMap`
[INFO] [stdout]  --> src/cooccur.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::hash::BuildHasherDefault`
[INFO] [stdout]  --> src/cooccur.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::hash::BuildHasherDefault;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Write as IoWrite`
[INFO] [stdout]  --> src/cooccur.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::io::Write as IoWrite;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fasthash::xx::Hasher64`
[INFO] [stdout]  --> src/cooccur.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use fasthash::xx::Hasher64;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `indicatif`
[INFO] [stdout]  --> src/cooccur.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use indicatif;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input_reader`
[INFO] [stdout]   --> src/cooccur.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let input_reader = std::io::BufReader::new(
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_input_reader`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output_writer`
[INFO] [stdout]   --> src/cooccur.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut output_writer = std::io::BufWriter::new(
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_writer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/cooccur.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut output_writer = std::io::BufWriter::new(
[INFO] [stdout]    |         ----^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input_reader`
[INFO] [stdout]   --> src/cooccur.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let input_reader = std::io::BufReader::new(
[INFO] [stdout]    |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_input_reader`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `output_writer`
[INFO] [stdout]   --> src/cooccur.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut output_writer = std::io::BufWriter::new(
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_output_writer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/cooccur.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 28 |     let mut output_writer = std::io::BufWriter::new(
[INFO] [stdout]    |         ----^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.23s
[INFO] running `Command { std: "docker" "inspect" "f070adca9886d8e21c0cb37d7c67379eeb775de2a11bb56b72884a495fc223b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f070adca9886d8e21c0cb37d7c67379eeb775de2a11bb56b72884a495fc223b7", kill_on_drop: false }`
[INFO] [stdout] f070adca9886d8e21c0cb37d7c67379eeb775de2a11bb56b72884a495fc223b7
