[INFO] cloning repository https://github.com/dRAT3/merter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dRAT3/merter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FdRAT3%2Fmerter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FdRAT3%2Fmerter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eacc0814f5ebcf2ed2afddab91b8d56ba1a9eb06
[INFO] checking dRAT3/merter against try#07fecb9cf34c4979a772ba38c99d6d9144768413 for pr-87710
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FdRAT3%2Fmerter" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dRAT3/merter on toolchain 07fecb9cf34c4979a772ba38c99d6d9144768413
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dRAT3/merter
[INFO] finished tweaking git repo https://github.com/dRAT3/merter
[INFO] tweaked toml for git repo https://github.com/dRAT3/merter written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/dRAT3/merter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2d885e9909639186abd145f186dad9fb101c06f33d0807e9f3e0888fcc11318c
[INFO] running `Command { std: "docker" "start" "-a" "2d885e9909639186abd145f186dad9fb101c06f33d0807e9f3e0888fcc11318c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d885e9909639186abd145f186dad9fb101c06f33d0807e9f3e0888fcc11318c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d885e9909639186abd145f186dad9fb101c06f33d0807e9f3e0888fcc11318c", kill_on_drop: false }`
[INFO] [stdout] 2d885e9909639186abd145f186dad9fb101c06f33d0807e9f3e0888fcc11318c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 52d05a19db8eddae4a820148b90b3bdb1fa1bbba756304f527c252fb10b46cdd
[INFO] running `Command { std: "docker" "start" "-a" "52d05a19db8eddae4a820148b90b3bdb1fa1bbba756304f527c252fb10b46cdd", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]     Checking futures-sink v0.3.16
[INFO] [stderr]    Compiling futures-task v0.3.16
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]     Checking futures-io v0.3.16
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling lexical-core v0.7.6
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking serde v0.8.23
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking text_io v0.1.8
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking tracing-core v0.1.18
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]     Checking log v0.4.14
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking http-body v0.4.2
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking encoding_rs v0.8.28
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking socket2 v0.4.0
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking dirs v3.0.2
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]    Compiling futures-macro v0.3.16
[INFO] [stderr]    Compiling openssl-sys v0.9.63
[INFO] [stderr]    Compiling futures-util v0.3.16
[INFO] [stderr]    Compiling tokio v1.6.1
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling openssl v0.10.34
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking serde-hjson v0.9.1
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling tokio-macros v1.2.0
[INFO] [stderr]     Checking futures-executor v0.3.16
[INFO] [stderr]     Checking serde v1.0.126
[INFO] [stderr]     Checking futures v0.3.16
[INFO] [stderr]     Checking tokio-util v0.6.7
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking h2 v0.3.3
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking bstr v0.2.16
[INFO] [stderr]     Checking serde_urlencoded v0.7.0
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking hyper v0.14.9
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking config v0.11.0
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.3
[INFO] [stderr]     Checking merter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `Deserialize`, `Serialize`
[INFO] [stdout]   --> src/main.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 | use serde::{Deserialize, Serialize};
[INFO] [stdout]    |             ^^^^^^^^^^^  ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize`, `Serialize`
[INFO] [stdout]   --> src/main.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 | use serde::{Deserialize, Serialize};
[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 [unoptimized + debuginfo] target(s) in 57.97s
[INFO] running `Command { std: "docker" "inspect" "52d05a19db8eddae4a820148b90b3bdb1fa1bbba756304f527c252fb10b46cdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52d05a19db8eddae4a820148b90b3bdb1fa1bbba756304f527c252fb10b46cdd", kill_on_drop: false }`
[INFO] [stdout] 52d05a19db8eddae4a820148b90b3bdb1fa1bbba756304f527c252fb10b46cdd