[INFO] cloning repository https://github.com/whothey/firstfollow
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/whothey/firstfollow" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhothey%2Ffirstfollow", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhothey%2Ffirstfollow'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ed70ddfb2c949e42afc1b1b7e51e22ef854739a2
[INFO] testing whothey/firstfollow against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwhothey%2Ffirstfollow" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/whothey/firstfollow on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/whothey/firstfollow
[INFO] finished tweaking git repo https://github.com/whothey/firstfollow
[INFO] tweaked toml for git repo https://github.com/whothey/firstfollow written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/whothey/firstfollow already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e06b0a1e71b9d06b3db9c3711c093ec24653a9316e9744be72e403c6055e182f
[INFO] running `Command { std: "docker" "start" "-a" "e06b0a1e71b9d06b3db9c3711c093ec24653a9316e9744be72e403c6055e182f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e06b0a1e71b9d06b3db9c3711c093ec24653a9316e9744be72e403c6055e182f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e06b0a1e71b9d06b3db9c3711c093ec24653a9316e9744be72e403c6055e182f", kill_on_drop: false }`
[INFO] [stdout] e06b0a1e71b9d06b3db9c3711c093ec24653a9316e9744be72e403c6055e182f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf956f63e86669c0956394b64b317dd4cc34b3988817f48d95b068b791d7dd39
[INFO] running `Command { std: "docker" "start" "-a" "bf956f63e86669c0956394b64b317dd4cc34b3988817f48d95b068b791d7dd39", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.26
[INFO] [stderr]    Compiling lazy_static v0.2.8
[INFO] [stderr]    Compiling regex-syntax v0.4.1
[INFO] [stderr]    Compiling log v0.3.8
[INFO] [stderr]    Compiling thread_local v0.3.4
[INFO] [stderr]    Compiling memchr v1.0.1
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling env_logger v0.4.3
[INFO] [stderr]    Compiling firstfollow v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/formalgrammar/mod.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | / lazy_static! {
[INFO] [stdout] 21 | |     static ref FIRST_EPSILON: Symbol = Symbol::Terminal(EPSILON_CHAR.to_string());
[INFO] [stdout] 22 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/formalgrammar/mod.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | / lazy_static! {
[INFO] [stdout] 21 | |     static ref FIRST_EPSILON: Symbol = Symbol::Terminal(EPSILON_CHAR.to_string());
[INFO] [stdout] 22 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/formalgrammar/mod.rs:108:37
[INFO] [stdout]     |
[INFO] [stdout] 108 | ...                   let mut set = first.get_mut(key).unwrap(); 
[INFO] [stdout]     |                           ----^^^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/formalgrammar/mod.rs:181:33
[INFO] [stdout]     |
[INFO] [stdout] 181 | ...                   let mut set = follow_map.entry(target)
[INFO] [stdout]     |                           ----^^^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_terminal`
[INFO] [stdout]   --> src/formalgrammar/symbol.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn is_terminal(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_nonterminal`
[INFO] [stdout]   --> src/formalgrammar/symbol.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn is_nonterminal(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.90s
[INFO] running `Command { std: "docker" "inspect" "bf956f63e86669c0956394b64b317dd4cc34b3988817f48d95b068b791d7dd39", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf956f63e86669c0956394b64b317dd4cc34b3988817f48d95b068b791d7dd39", kill_on_drop: false }`
[INFO] [stdout] bf956f63e86669c0956394b64b317dd4cc34b3988817f48d95b068b791d7dd39
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd825fe060478ede6679bcda7096a6fcee4ccc2b1253572e47c12c81be442ff8
[INFO] running `Command { std: "docker" "start" "-a" "bd825fe060478ede6679bcda7096a6fcee4ccc2b1253572e47c12c81be442ff8", kill_on_drop: false }`
[INFO] [stderr]    Compiling firstfollow v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/formalgrammar/mod.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | / lazy_static! {
[INFO] [stdout] 21 | |     static ref FIRST_EPSILON: Symbol = Symbol::Terminal(EPSILON_CHAR.to_string());
[INFO] [stdout] 22 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> src/formalgrammar/mod.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | / lazy_static! {
[INFO] [stdout] 21 | |     static ref FIRST_EPSILON: Symbol = Symbol::Terminal(EPSILON_CHAR.to_string());
[INFO] [stdout] 22 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/formalgrammar/mod.rs:108:37
[INFO] [stdout]     |
[INFO] [stdout] 108 | ...                   let mut set = first.get_mut(key).unwrap(); 
[INFO] [stdout]     |                           ----^^^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/formalgrammar/mod.rs:181:33
[INFO] [stdout]     |
[INFO] [stdout] 181 | ...                   let mut set = follow_map.entry(target)
[INFO] [stdout]     |                           ----^^^
[INFO] [stdout]     |                           |
[INFO] [stdout]     |                           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_terminal`
[INFO] [stdout]   --> src/formalgrammar/symbol.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub fn is_terminal(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_nonterminal`
[INFO] [stdout]   --> src/formalgrammar/symbol.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 |     pub fn is_nonterminal(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "bd825fe060478ede6679bcda7096a6fcee4ccc2b1253572e47c12c81be442ff8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd825fe060478ede6679bcda7096a6fcee4ccc2b1253572e47c12c81be442ff8", kill_on_drop: false }`
[INFO] [stdout] bd825fe060478ede6679bcda7096a6fcee4ccc2b1253572e47c12c81be442ff8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4b0a0f66ea0bac3e3d2c0c61044c05a71e14daee07f51b8ee1a90b897d778522
[INFO] running `Command { std: "docker" "start" "-a" "4b0a0f66ea0bac3e3d2c0c61044c05a71e14daee07f51b8ee1a90b897d778522", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stderr]   --> src/formalgrammar/mod.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | / lazy_static! {
[INFO] [stderr] 21 | |     static ref FIRST_EPSILON: Symbol = Symbol::Terminal(EPSILON_CHAR.to_string());
[INFO] [stderr] 22 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]    = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stderr]   --> src/formalgrammar/mod.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | / lazy_static! {
[INFO] [stderr] 21 | |     static ref FIRST_EPSILON: Symbol = Symbol::Terminal(EPSILON_CHAR.to_string());
[INFO] [stderr] 22 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/formalgrammar/mod.rs:108:37
[INFO] [stderr]     |
[INFO] [stderr] 108 | ...                   let mut set = first.get_mut(key).unwrap(); 
[INFO] [stderr]     |                           ----^^^
[INFO] [stderr]     |                           |
[INFO] [stderr]     |                           help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/formalgrammar/mod.rs:181:33
[INFO] [stderr]     |
[INFO] [stderr] 181 | ...                   let mut set = follow_map.entry(target)
[INFO] [stderr]     |                           ----^^^
[INFO] [stderr]     |                           |
[INFO] [stderr]     |                           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_terminal`
[INFO] [stderr]   --> src/formalgrammar/symbol.rs:10:12
[INFO] [stderr]    |
[INFO] [stderr] 10 |     pub fn is_terminal(&self) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_nonterminal`
[INFO] [stderr]   --> src/formalgrammar/symbol.rs:17:12
[INFO] [stderr]    |
[INFO] [stderr] 17 |     pub fn is_nonterminal(&self) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `firstfollow` (bin "firstfollow" test) generated 6 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/firstfollow-9c938943fe859f37)
[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" "4b0a0f66ea0bac3e3d2c0c61044c05a71e14daee07f51b8ee1a90b897d778522", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b0a0f66ea0bac3e3d2c0c61044c05a71e14daee07f51b8ee1a90b897d778522", kill_on_drop: false }`
[INFO] [stdout] 4b0a0f66ea0bac3e3d2c0c61044c05a71e14daee07f51b8ee1a90b897d778522