[INFO] fetching crate source-span 2.7.0...
[INFO] testing source-span-2.7.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate source-span 2.7.0 into /workspace/builds/worker-30/source
[INFO] validating manifest of crates.io crate source-span 2.7.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate source-span 2.7.0
[INFO] finished tweaking crates.io crate source-span 2.7.0
[INFO] tweaked toml for crates.io crate source-span 2.7.0 written to /workspace/builds/worker-30/source/Cargo.toml
[INFO] crate crates.io crate source-span 2.7.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded utf8-decode v1.0.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fe88263d6f73c5a783e9f5337dbe9d5314e9ac5ee0eba8b563499951bcd41be0
[INFO] running `Command { std: "docker" "start" "-a" "fe88263d6f73c5a783e9f5337dbe9d5314e9ac5ee0eba8b563499951bcd41be0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fe88263d6f73c5a783e9f5337dbe9d5314e9ac5ee0eba8b563499951bcd41be0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe88263d6f73c5a783e9f5337dbe9d5314e9ac5ee0eba8b563499951bcd41be0", kill_on_drop: false }`
[INFO] [stdout] fe88263d6f73c5a783e9f5337dbe9d5314e9ac5ee0eba8b563499951bcd41be0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 86ee78e4e7ffce65d95b7ce198133be4b78cc90d0bc3db36e9668b68ba51f8a1
[INFO] running `Command { std: "docker" "start" "-a" "86ee78e4e7ffce65d95b7ce198133be4b78cc90d0bc3db36e9668b68ba51f8a1", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling numtoa v0.1.0
[INFO] [stderr]    Compiling termion v1.5.6
[INFO] [stderr]    Compiling source-span v2.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 38s
[INFO] running `Command { std: "docker" "inspect" "86ee78e4e7ffce65d95b7ce198133be4b78cc90d0bc3db36e9668b68ba51f8a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "86ee78e4e7ffce65d95b7ce198133be4b78cc90d0bc3db36e9668b68ba51f8a1", kill_on_drop: false }`
[INFO] [stdout] 86ee78e4e7ffce65d95b7ce198133be4b78cc90d0bc3db36e9668b68ba51f8a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb3ab5d7e50884af44a1247db9250e1bda709d52b6c4712b3e7813c418322015
[INFO] running `Command { std: "docker" "start" "-a" "bb3ab5d7e50884af44a1247db9250e1bda709d52b6c4712b3e7813c418322015", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling utf8-decode v1.0.1
[INFO] [stderr]    Compiling source-span v2.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `string`
[INFO] [stdout]  --> examples/formatting_challenge.rs:8:2
[INFO] [stdout]   |
[INFO] [stdout] 8 |     string: String,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Token` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> examples/formatting_challenge.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[derive(Clone, Default)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `span`
[INFO] [stdout]  --> examples/formatting_challenge.rs:9:2
[INFO] [stdout]   |
[INFO] [stdout] 9 |     span: Span,
[INFO] [stdout]   |     ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Token` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]  --> examples/formatting_challenge.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | #[derive(Clone, Default)]
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.69s
[INFO] running `Command { std: "docker" "inspect" "bb3ab5d7e50884af44a1247db9250e1bda709d52b6c4712b3e7813c418322015", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb3ab5d7e50884af44a1247db9250e1bda709d52b6c4712b3e7813c418322015", kill_on_drop: false }`
[INFO] [stdout] bb3ab5d7e50884af44a1247db9250e1bda709d52b6c4712b3e7813c418322015
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] deca0dd17133956419c11b76c05e280484be09f31ca3f47a8874ce18b9b7fb07
[INFO] running `Command { std: "docker" "start" "-a" "deca0dd17133956419c11b76c05e280484be09f31ca3f47a8874ce18b9b7fb07", kill_on_drop: false }`
[INFO] [stderr] warning: field is never read: `string`
[INFO] [stderr]  --> examples/formatting_challenge.rs:8:2
[INFO] [stderr]   |
[INFO] [stderr] 8 |     string: String,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] note: `Token` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]  --> examples/formatting_challenge.rs:6:10
[INFO] [stderr]   |
[INFO] [stderr] 6 | #[derive(Clone, Default)]
[INFO] [stderr]   |          ^^^^^
[INFO] [stderr]   = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `span`
[INFO] [stderr]  --> examples/formatting_challenge.rs:9:2
[INFO] [stderr]   |
[INFO] [stderr] 9 |     span: Span,
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr] note: `Token` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]  --> examples/formatting_challenge.rs:6:10
[INFO] [stderr]   |
[INFO] [stderr] 6 | #[derive(Clone, Default)]
[INFO] [stderr]   |          ^^^^^
[INFO] [stderr]   = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `source-span` (example "formatting_challenge") generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.33s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/source_span-53ea840a7d0ad119)
[INFO] [stdout] 
[INFO] [stdout] running 13 tests
[INFO] [stdout] test layout::tests::get_byte_index1 ... ok
[INFO] [stdout] test layout::tests::get_byte_index2 ... ok
[INFO] [stdout] test layout::tests::get_byte_index3 ... ok
[INFO] [stdout] test layout::tests::get_byte_index_out_of_bounds1 ... ok
[INFO] [stdout] test layout::tests::get_byte_index_out_of_bounds2 ... ok
[INFO] [stdout] test layout::tests::get_span_slice1 ... ok
[INFO] [stdout] test layout::tests::get_span_slice2 ... ok
[INFO] [stdout] test layout::tests::get_span_slice4 ... ok
[INFO] [stdout] test position::tests::test_ord_position ... ok
[INFO] [stdout] test tests::test_display_span ... ok
[INFO] [stdout] test layout::tests::get_span_slice5 ... ok
[INFO] [stdout] test layout::tests::get_span_slice3 ... ok
[INFO] [stdout] test position::tests::test_debug ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 13 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.12s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests source-span
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/lib.rs - (line 27) ... ok
[INFO] [stdout] test src/lib.rs - Span (line 154) ... ok
[INFO] [stdout] test src/lib.rs - (line 11) ... ok
[INFO] [stdout] test src/position.rs - position::Position::end (line 41) ... ok
[INFO] [stdout] test src/lib.rs - (line 76) ... ok
[INFO] [stdout] test src/fmt.rs - fmt::Formatter::render (line 934) ... ok
[INFO] [stdout] test src/lib.rs - (line 57) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.27s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "deca0dd17133956419c11b76c05e280484be09f31ca3f47a8874ce18b9b7fb07", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "deca0dd17133956419c11b76c05e280484be09f31ca3f47a8874ce18b9b7fb07", kill_on_drop: false }`
[INFO] [stdout] deca0dd17133956419c11b76c05e280484be09f31ca3f47a8874ce18b9b7fb07