[INFO] cloning repository https://github.com/arkaitzj/benchrs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arkaitzj/benchrs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farkaitzj%2Fbenchrs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farkaitzj%2Fbenchrs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] da4af24b5b3fe13eb2a8f198001e9ea9866bb4d6
[INFO] checking arkaitzj/benchrs against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farkaitzj%2Fbenchrs" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/arkaitzj/benchrs on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/arkaitzj/benchrs
[INFO] finished tweaking git repo https://github.com/arkaitzj/benchrs
[INFO] tweaked toml for git repo https://github.com/arkaitzj/benchrs written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/arkaitzj/benchrs 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a4c10da32720225e72c90590aafeceab6e58c2c9e50dbfa1bd95116d2192ce1d
[INFO] running `Command { std: "docker" "start" "-a" "a4c10da32720225e72c90590aafeceab6e58c2c9e50dbfa1bd95116d2192ce1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4c10da32720225e72c90590aafeceab6e58c2c9e50dbfa1bd95116d2192ce1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4c10da32720225e72c90590aafeceab6e58c2c9e50dbfa1bd95116d2192ce1d", kill_on_drop: false }`
[INFO] [stdout] a4c10da32720225e72c90590aafeceab6e58c2c9e50dbfa1bd95116d2192ce1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 758e8699b861f3efe76d0ef8839b109d22c07531f669cb5e2bb07981bdd9f22d
[INFO] running `Command { std: "docker" "start" "-a" "758e8699b861f3efe76d0ef8839b109d22c07531f669cb5e2bb07981bdd9f22d", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.24
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[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking event-listener v2.5.3
[INFO] [stderr]    Compiling polling v2.3.0
[INFO] [stderr]    Compiling futures-channel v0.3.24
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[INFO] [stderr]     Checking futures-sink v0.3.24
[INFO] [stderr]    Compiling futures-util v0.3.24
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[INFO] [stderr]     Checking concurrent-queue v1.2.4
[INFO] [stderr]     Checking socket2 v0.4.6
[INFO] [stderr]     Checking atomic-waker v1.0.0
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[INFO] [stderr]    Compiling crc32fast v1.3.2
[INFO] [stderr]     Checking num_threads v0.1.6
[INFO] [stderr]     Checking os_str_bytes v6.3.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking getrandom v0.2.7
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[INFO] [stderr]    Compiling openssl-sys v0.9.75
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[INFO] [stderr]     Checking blocking v1.2.0
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[INFO] [stderr]     Checking futures v0.3.24
[INFO] [stderr]     Checking async-native-tls v0.4.0
[INFO] [stderr]     Checking benchrs v0.1.11-alpha.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `AsyncRead` is imported redundantly
[INFO] [stdout]  --> src/parser.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use futures::prelude::*;
[INFO] [stdout]   |     ------------------- the item `AsyncRead` is already imported here
[INFO] [stdout] 3 | use futures::AsyncRead;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `min` is imported redundantly
[INFO] [stdout]    --> src/parser.rs:221:9
[INFO] [stdout]     |
[INFO] [stdout] 217 |     use super::*;
[INFO] [stdout]     |         -------- the item `min` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 221 |     use std::cmp::min;
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.90s
[INFO] running `Command { std: "docker" "inspect" "758e8699b861f3efe76d0ef8839b109d22c07531f669cb5e2bb07981bdd9f22d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "758e8699b861f3efe76d0ef8839b109d22c07531f669cb5e2bb07981bdd9f22d", kill_on_drop: false }`
[INFO] [stdout] 758e8699b861f3efe76d0ef8839b109d22c07531f669cb5e2bb07981bdd9f22d
[INFO] checking arkaitzj/benchrs against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farkaitzj%2Fbenchrs" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/arkaitzj/benchrs on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/arkaitzj/benchrs
[INFO] finished tweaking git repo https://github.com/arkaitzj/benchrs
[INFO] tweaked toml for git repo https://github.com/arkaitzj/benchrs written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/arkaitzj/benchrs 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f5ab4ae75035e40d975d4e024f64405b8436c4321396a960ad4ab81979bcc1ed
[INFO] running `Command { std: "docker" "start" "-a" "f5ab4ae75035e40d975d4e024f64405b8436c4321396a960ad4ab81979bcc1ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f5ab4ae75035e40d975d4e024f64405b8436c4321396a960ad4ab81979bcc1ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5ab4ae75035e40d975d4e024f64405b8436c4321396a960ad4ab81979bcc1ed", kill_on_drop: false }`
[INFO] [stdout] f5ab4ae75035e40d975d4e024f64405b8436c4321396a960ad4ab81979bcc1ed
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 119c87f512fca3c956dbcaa5c99fcc3dc8d6372019983a5d205c835f37ee9a63
[INFO] running `Command { std: "docker" "start" "-a" "119c87f512fca3c956dbcaa5c99fcc3dc8d6372019983a5d205c835f37ee9a63", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.24
[INFO] [stderr]     Checking futures-io v0.3.24
[INFO] [stderr]    Compiling slab v0.4.7
[INFO] [stderr]     Checking cache-padded v1.2.0
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]     Checking fastrand v1.8.0
[INFO] [stderr]     Checking event-listener v2.5.3
[INFO] [stderr]    Compiling polling v2.3.0
[INFO] [stderr]    Compiling futures-channel v0.3.24
[INFO] [stderr]    Compiling futures-task v0.3.24
[INFO] [stderr]    Compiling async-io v1.8.0
[INFO] [stderr]    Compiling futures-util v0.3.24
[INFO] [stderr]     Checking futures-sink v0.3.24
[INFO] [stderr]     Checking async-task v4.3.0
[INFO] [stderr]    Compiling futures-macro v0.3.24
[INFO] [stderr]     Checking concurrent-queue v1.2.4
[INFO] [stderr]     Checking socket2 v0.4.6
[INFO] [stderr]    Compiling signal-hook v0.3.14
[INFO] [stderr]    Compiling openssl v0.10.41
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]    Compiling openssl-macros v0.1.0
[INFO] [stderr]    Compiling async-fs v1.6.0
[INFO] [stderr]    Compiling indexmap v1.9.1
[INFO] [stderr]     Checking async-channel v1.7.1
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]    Compiling async-net v1.7.0
[INFO] [stderr]    Compiling async-process v1.5.0
[INFO] [stderr]    Compiling native-tls v0.2.10
[INFO] [stderr]     Checking async-lock v2.5.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.32
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[INFO] [stderr]     Checking os_str_bytes v6.3.0
[INFO] [stderr]    Compiling time-macros v0.2.4
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking getrandom v0.2.7
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[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]    Compiling openssl-sys v0.9.75
[INFO] [stderr]     Checking mktemp v0.4.1
[INFO] [stderr]     Checking flate2 v1.0.24
[INFO] [stderr]     Checking clap v3.2.18
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[INFO] [stderr]     Checking time v0.3.14
[INFO] [stderr]     Checking simplelog v0.12.0
[INFO] [stderr]     Checking futures-executor v0.3.24
[INFO] [stderr]     Checking futures v0.3.24
[INFO] [stderr]     Checking async-native-tls v0.4.0
[INFO] [stderr]     Checking benchrs v0.1.11-alpha.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `AsyncRead` is imported redundantly
[INFO] [stdout]  --> src/parser.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use futures::prelude::*;
[INFO] [stdout]   |     ------------------- the item `AsyncRead` is already imported here
[INFO] [stdout] 3 | use futures::AsyncRead;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `min` is imported redundantly
[INFO] [stdout]    --> src/parser.rs:221:9
[INFO] [stdout]     |
[INFO] [stdout] 217 |     use super::*;
[INFO] [stdout]     |         -------- the item `min` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 221 |     use std::cmp::min;
[INFO] [stdout]     |         ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.57s
[INFO] running `Command { std: "docker" "inspect" "119c87f512fca3c956dbcaa5c99fcc3dc8d6372019983a5d205c835f37ee9a63", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "119c87f512fca3c956dbcaa5c99fcc3dc8d6372019983a5d205c835f37ee9a63", kill_on_drop: false }`
[INFO] [stdout] 119c87f512fca3c956dbcaa5c99fcc3dc8d6372019983a5d205c835f37ee9a63