[INFO] cloning repository https://github.com/bielr/biotrees-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bielr/biotrees-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbielr%2Fbiotrees-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbielr%2Fbiotrees-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f832804f9a4d4dc24e1c165cf0362387a4115d60
[INFO] checking bielr/biotrees-rs against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbielr%2Fbiotrees-rs" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bielr/biotrees-rs on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bielr/biotrees-rs
[INFO] finished tweaking git repo https://github.com/bielr/biotrees-rs
[INFO] tweaked toml for git repo https://github.com/bielr/biotrees-rs written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cached v0.8.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "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] 5bc716a85bb277b3c5b0df45377a5f47a152c1fd3aa297a8e000cbb2537807ce
[INFO] running `Command { std: "docker" "start" "-a" "5bc716a85bb277b3c5b0df45377a5f47a152c1fd3aa297a8e000cbb2537807ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5bc716a85bb277b3c5b0df45377a5f47a152c1fd3aa297a8e000cbb2537807ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bc716a85bb277b3c5b0df45377a5f47a152c1fd3aa297a8e000cbb2537807ce", kill_on_drop: false }`
[INFO] [stdout] 5bc716a85bb277b3c5b0df45377a5f47a152c1fd3aa297a8e000cbb2537807ce
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08c362de9788085b4664dcb7f1c1cae22cc82acdc12de7dc26babb8288fb1b71
[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" "08c362de9788085b4664dcb7f1c1cae22cc82acdc12de7dc26babb8288fb1b71", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling rayon-core v1.8.0
[INFO] [stderr]     Checking either v1.6.0
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling rayon v1.4.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking crossbeam-channel v0.4.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking once_cell v0.1.8
[INFO] [stderr]     Checking cached v0.8.1
[INFO] [stderr]     Checking biotrees v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/phylo/newick.rs:54:17
[INFO] [stdout]    |
[INFO] [stdout] 54 |                 try!(f.write_str("("));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/phylo/newick.rs:55:17
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 try!(ts[0].fmt_newick(f));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/phylo/newick.rs:58:21
[INFO] [stdout]    |
[INFO] [stdout] 58 |                     try!(f.write_str(","));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/phylo/newick.rs:59:21
[INFO] [stdout]    |
[INFO] [stdout] 59 |                     try!(t.fmt_newick(f))
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/phylo/mod.rs:127:48
[INFO] [stdout]     |
[INFO] [stdout] 127 |                     let f_ref = &mut f as &mut FnMut(&Self, R, R) -> R;
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&Self, R, R) -> R`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/phylo/mod.rs:131:48
[INFO] [stdout]     |
[INFO] [stdout] 131 |                     let f_ref = &mut f as &mut FnMut(&Self, R, R) -> R;
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&Self, R, R) -> R`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/phylo/mod.rs:141:33
[INFO] [stdout]     |
[INFO] [stdout] 141 |         where F: Fn(&Self, &mut Iterator<Item=R>) -> R,
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=R>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/phylo/mod.rs:147:36
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 let f_ref = &f as &Fn(&Self, &mut Iterator<Item=R>) -> R;
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self, &mut Iterator<Item=R>) -> R`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/phylo/mod.rs:147:51
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 let f_ref = &f as &Fn(&Self, &mut Iterator<Item=R>) -> R;
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=R>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/phylo/newick.rs:54:17
[INFO] [stdout]    |
[INFO] [stdout] 54 |                 try!(f.write_str("("));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/phylo/newick.rs:55:17
[INFO] [stdout]    |
[INFO] [stdout] 55 |                 try!(ts[0].fmt_newick(f));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/phylo/newick.rs:58:21
[INFO] [stdout]    |
[INFO] [stdout] 58 |                     try!(f.write_str(","));
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/phylo/newick.rs:59:21
[INFO] [stdout]    |
[INFO] [stdout] 59 |                     try!(t.fmt_newick(f))
[INFO] [stdout]    |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/phylo/mod.rs:127:48
[INFO] [stdout]     |
[INFO] [stdout] 127 |                     let f_ref = &mut f as &mut FnMut(&Self, R, R) -> R;
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&Self, R, R) -> R`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/phylo/mod.rs:131:48
[INFO] [stdout]     |
[INFO] [stdout] 131 |                     let f_ref = &mut f as &mut FnMut(&Self, R, R) -> R;
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&Self, R, R) -> R`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/phylo/mod.rs:141:33
[INFO] [stdout]     |
[INFO] [stdout] 141 |         where F: Fn(&Self, &mut Iterator<Item=R>) -> R,
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=R>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/phylo/mod.rs:147:36
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 let f_ref = &f as &Fn(&Self, &mut Iterator<Item=R>) -> R;
[INFO] [stdout]     |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Self, &mut Iterator<Item=R>) -> R`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/phylo/mod.rs:147:51
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 let f_ref = &f as &Fn(&Self, &mut Iterator<Item=R>) -> R;
[INFO] [stdout]     |                                                   ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Iterator<Item=R>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sym_desc_half`
[INFO] [stdout]   --> examples/enum_balance.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn sym_desc_half(t: &Shape) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `sym_desc`
[INFO] [stdout]   --> examples/enum_balance.rs:29:4
[INFO] [stdout]    |
[INFO] [stdout] 29 | fn sym_desc(t: &Shape) -> u32 {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `depth_avg`
[INFO] [stdout]   --> examples/enum_balance.rs:48:4
[INFO] [stdout]    |
[INFO] [stdout] 48 | fn depth_avg<T>(t: &Phylo<T>) -> f64 {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `depth_var`
[INFO] [stdout]   --> examples/enum_balance.rs:55:4
[INFO] [stdout]    |
[INFO] [stdout] 55 | fn depth_var<T>(t: &Phylo<T>) -> f64 {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.62s
[INFO] running `Command { std: "docker" "inspect" "08c362de9788085b4664dcb7f1c1cae22cc82acdc12de7dc26babb8288fb1b71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08c362de9788085b4664dcb7f1c1cae22cc82acdc12de7dc26babb8288fb1b71", kill_on_drop: false }`
[INFO] [stdout] 08c362de9788085b4664dcb7f1c1cae22cc82acdc12de7dc26babb8288fb1b71