[INFO] cloning repository https://github.com/jiegec/classroom-helper
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jiegec/classroom-helper" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjiegec%2Fclassroom-helper", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjiegec%2Fclassroom-helper'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b235b37d3c59cb62283a3c5b1891657490e254d7
[INFO] testing jiegec/classroom-helper against master#b70888601af92f6cdc0364abab3446e418b91d36 for pr-86479
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjiegec%2Fclassroom-helper" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jiegec/classroom-helper on toolchain b70888601af92f6cdc0364abab3446e418b91d36
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jiegec/classroom-helper
[INFO] finished tweaking git repo https://github.com/jiegec/classroom-helper
[INFO] tweaked toml for git repo https://github.com/jiegec/classroom-helper written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/jiegec/classroom-helper already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 93507d9f4aae9764cecb55a61576d3763c7e21d10f3f82b7ff6fa9d89f8d0695
[INFO] running `Command { std: "docker" "start" "-a" "93507d9f4aae9764cecb55a61576d3763c7e21d10f3f82b7ff6fa9d89f8d0695", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93507d9f4aae9764cecb55a61576d3763c7e21d10f3f82b7ff6fa9d89f8d0695", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93507d9f4aae9764cecb55a61576d3763c7e21d10f3f82b7ff6fa9d89f8d0695", kill_on_drop: false }`
[INFO] [stdout] 93507d9f4aae9764cecb55a61576d3763c7e21d10f3f82b7ff6fa9d89f8d0695
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d6cbf782b36a195e5567c8448d4854eafbb59dfc8957257b5e363ed34d27cd45
[INFO] running `Command { std: "docker" "start" "-a" "d6cbf782b36a195e5567c8448d4854eafbb59dfc8957257b5e363ed34d27cd45", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling serde v1.0.94
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling regex v1.1.7
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling serde v0.8.23
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.3
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling numtoa v0.1.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]    Compiling rust-ini v0.13.0
[INFO] [stderr]    Compiling cassowary v0.3.0
[INFO] [stderr]    Compiling fs_extra v1.1.0
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling num_cpus v1.10.1
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling threadpool v1.7.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling regex-syntax v0.6.7
[INFO] [stderr]    Compiling termion v1.5.3
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling tui v0.10.0
[INFO] [stderr]    Compiling aho-corasick v0.7.4
[INFO] [stderr]    Compiling csv-core v0.1.6
[INFO] [stderr]    Compiling regex-automata v0.1.7
[INFO] [stderr]    Compiling serde_test v0.8.23
[INFO] [stderr]    Compiling linked-hash-map v0.3.0
[INFO] [stderr]    Compiling bstr v0.2.1
[INFO] [stderr]    Compiling toml v0.4.10
[INFO] [stderr]    Compiling serde_json v1.0.40
[INFO] [stderr]    Compiling csv v1.1.1
[INFO] [stderr]    Compiling serde-hjson v0.8.2
[INFO] [stderr]    Compiling config v0.9.3
[INFO] [stderr]    Compiling classroom-helper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.10s
[INFO] running `Command { std: "docker" "inspect" "d6cbf782b36a195e5567c8448d4854eafbb59dfc8957257b5e363ed34d27cd45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6cbf782b36a195e5567c8448d4854eafbb59dfc8957257b5e363ed34d27cd45", kill_on_drop: false }`
[INFO] [stdout] d6cbf782b36a195e5567c8448d4854eafbb59dfc8957257b5e363ed34d27cd45
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9db4e5b51a91f4fb410a36adfbacde747cd4714bd699b257a56a39fcc3156c2a
[INFO] running `Command { std: "docker" "start" "-a" "9db4e5b51a91f4fb410a36adfbacde747cd4714bd699b257a56a39fcc3156c2a", kill_on_drop: false }`
[INFO] [stderr]    Compiling classroom-helper v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "9db4e5b51a91f4fb410a36adfbacde747cd4714bd699b257a56a39fcc3156c2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9db4e5b51a91f4fb410a36adfbacde747cd4714bd699b257a56a39fcc3156c2a", kill_on_drop: false }`
[INFO] [stdout] 9db4e5b51a91f4fb410a36adfbacde747cd4714bd699b257a56a39fcc3156c2a
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+b70888601af92f6cdc0364abab3446e418b91d36" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] a0d972d22eea3f224600b6c05d3916806c961c631ee0f644f3a986627aa76d41
[INFO] running `Command { std: "docker" "start" "-a" "a0d972d22eea3f224600b6c05d3916806c961c631ee0f644f3a986627aa76d41", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/classroom_helper-28d15a89f057fd8c)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a0d972d22eea3f224600b6c05d3916806c961c631ee0f644f3a986627aa76d41", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0d972d22eea3f224600b6c05d3916806c961c631ee0f644f3a986627aa76d41", kill_on_drop: false }`
[INFO] [stdout] a0d972d22eea3f224600b6c05d3916806c961c631ee0f644f3a986627aa76d41