[INFO] cloning repository https://github.com/fredrikpe/less2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fredrikpe/less2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffredrikpe%2Fless2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffredrikpe%2Fless2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c801b0be3f5aaaeddb49b54b4854aa83505500db
[INFO] testing fredrikpe/less2 against beta-2021-01-01 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffredrikpe%2Fless2" "/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/fredrikpe/less2 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fredrikpe/less2
[INFO] finished tweaking git repo https://github.com/fredrikpe/less2
[INFO] tweaked toml for git repo https://github.com/fredrikpe/less2 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/fredrikpe/less2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bytecount v0.3.2
[INFO] [stderr]   Downloaded globset v0.4.2
[INFO] [stderr]   Downloaded syn v0.15.21
[INFO] [stderr]   Downloaded encoding_rs v0.8.12
[INFO] [stderr]   Downloaded grep-regex v0.1.1
[INFO] [stderr]   Downloaded encoding_rs_io v0.1.3
[INFO] [stderr]   Downloaded grep-searcher v0.1.1
[INFO] [stderr]   Downloaded grep v0.2.3
[INFO] [stderr]   Downloaded grep-cli v0.1.1
[INFO] [stderr]   Downloaded grep-matcher v0.1.1
[INFO] [stderr]   Downloaded grep-printer v0.1.1
[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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 780bb12f0ab46cc600fad02d4be74edb427585618f9843fd42a572c4899a60f3
[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" "780bb12f0ab46cc600fad02d4be74edb427585618f9843fd42a572c4899a60f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "780bb12f0ab46cc600fad02d4be74edb427585618f9843fd42a572c4899a60f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "780bb12f0ab46cc600fad02d4be74edb427585618f9843fd42a572c4899a60f3", kill_on_drop: false }`
[INFO] [stdout] 780bb12f0ab46cc600fad02d4be74edb427585618f9843fd42a572c4899a60f3
[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=warn" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] aacf20198a9cbf2c72d21c98fc9cb5b4a7debc0c798ab01deba956a0a6389b87
[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" "aacf20198a9cbf2c72d21c98fc9cb5b4a7debc0c798ab01deba956a0a6389b87", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.43
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling encoding_rs v0.8.12
[INFO] [stderr]    Compiling regex v1.0.6
[INFO] [stderr]    Compiling ryu v0.2.7
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling serde v1.0.80
[INFO] [stderr]    Compiling safemem v0.3.0
[INFO] [stderr]    Compiling termcolor v1.0.4
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling byteorder v1.2.7
[INFO] [stderr]    Compiling itoa v0.4.3
[INFO] [stderr]    Compiling bytecount v0.3.2
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling unicode-segmentation v1.2.1
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling regex-syntax v0.6.3
[INFO] [stderr]    Compiling textwrap v0.10.0
[INFO] [stderr]    Compiling memmap v0.6.2
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling termion v1.5.1
[INFO] [stderr]    Compiling base64 v0.9.3
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling quote v0.6.10
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling grep-matcher v0.1.1
[INFO] [stderr]    Compiling syn v0.15.21
[INFO] [stderr]    Compiling encoding_rs_io v0.1.3
[INFO] [stderr]    Compiling grep-searcher v0.1.1
[INFO] [stderr]    Compiling globset v0.4.2
[INFO] [stderr]    Compiling grep-regex v0.1.1
[INFO] [stderr]    Compiling serde_json v1.0.33
[INFO] [stderr]    Compiling grep-cli v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.80
[INFO] [stderr]    Compiling grep-printer v0.1.1
[INFO] [stderr]    Compiling grep v0.2.3
[INFO] [stderr]    Compiling less2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:26:32
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/printer.rs:86:41
[INFO] [stdout]    |
[INFO] [stdout] 86 |                         while let Some((index, grapheme)) = iter.next() {
[INFO] [stdout]    |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 01s
[INFO] running `Command { std: "docker" "inspect" "aacf20198a9cbf2c72d21c98fc9cb5b4a7debc0c798ab01deba956a0a6389b87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aacf20198a9cbf2c72d21c98fc9cb5b4a7debc0c798ab01deba956a0a6389b87", kill_on_drop: false }`
[INFO] [stdout] aacf20198a9cbf2c72d21c98fc9cb5b4a7debc0c798ab01deba956a0a6389b87
[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=warn" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 48301bca945b4422951812be380bfcda2c5c176087a42a320b4432e85a3463e6
[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" "48301bca945b4422951812be380bfcda2c5c176087a42a320b4432e85a3463e6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling less2 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/error.rs:26:32
[INFO] [stdout]    |
[INFO] [stdout] 26 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `index`
[INFO] [stdout]   --> src/printer.rs:86:41
[INFO] [stdout]    |
[INFO] [stdout] 86 |                         while let Some((index, grapheme)) = iter.next() {
[INFO] [stdout]    |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.81s
[INFO] running `Command { std: "docker" "inspect" "48301bca945b4422951812be380bfcda2c5c176087a42a320b4432e85a3463e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48301bca945b4422951812be380bfcda2c5c176087a42a320b4432e85a3463e6", kill_on_drop: false }`
[INFO] [stdout] 48301bca945b4422951812be380bfcda2c5c176087a42a320b4432e85a3463e6
[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=warn" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", 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] 70603112abf79d8c0aeee86b6e75a259a81b5b4908386d912775a76aab1c9aba
[INFO] running `Command { std: "docker" "start" "-a" "70603112abf79d8c0aeee86b6e75a259a81b5b4908386d912775a76aab1c9aba", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/error.rs:26:32
[INFO] [stderr]    |
[INFO] [stderr] 26 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `index`
[INFO] [stderr]   --> src/printer.rs:86:41
[INFO] [stderr]    |
[INFO] [stderr] 86 |                         while let Some((index, grapheme)) = iter.next() {
[INFO] [stderr]    |                                         ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/less2-712265e66a23a2fe
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test reader::tests::test_bufreader_fails_end ... ok
[INFO] [stdout] test reader::tests::test_err_at_end ... ok
[INFO] [stdout] test utf8_validation::tests::test_first_valid_pos ... ok
[INFO] [stdout] test utf8_validation::tests::test_utf8_validation ... ok
[INFO] [stdout] test reader::tests::test_seek_0_returns_0 ... ok
[INFO] [stdout] test reader::tests::test_bufreader_fails_start ... ok
[INFO] [stdout] test reader::tests::test_seek_to_end ... ok
[INFO] [stdout] test reader::tests::test_valid_from_1 ... ok
[INFO] [stdout] test util::tests::test_nth_last_newline_wrapped_file ... ok
[INFO] [stdout] test util::tests::test_nth_newline_not_wrapped ... ok
[INFO] [stdout] test util::tests::test_nth_newline_wrapped ... ok
[INFO] [stdout] test util::tests::test_snd_last_newline_wrapped ... ok
[INFO] [stdout] test util::tests::test_nth_last_newline_wrapped ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.07s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "70603112abf79d8c0aeee86b6e75a259a81b5b4908386d912775a76aab1c9aba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70603112abf79d8c0aeee86b6e75a259a81b5b4908386d912775a76aab1c9aba", kill_on_drop: false }`
[INFO] [stdout] 70603112abf79d8c0aeee86b6e75a259a81b5b4908386d912775a76aab1c9aba