[INFO] cloning repository https://github.com/lrdcasimir/gasplanner
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lrdcasimir/gasplanner" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flrdcasimir%2Fgasplanner", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flrdcasimir%2Fgasplanner'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 41676bb7ada5b1678d821043c4d482789857eac4
[INFO] checking lrdcasimir/gasplanner against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flrdcasimir%2Fgasplanner" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lrdcasimir/gasplanner on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lrdcasimir/gasplanner
[INFO] finished tweaking git repo https://github.com/lrdcasimir/gasplanner
[INFO] tweaked toml for git repo https://github.com/lrdcasimir/gasplanner written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/lrdcasimir/gasplanner already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded assert_float_eq v1.1.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a3f494d42053953bee55c236623043231d28083f5dc67ef1641967b749af51fe
[INFO] running `Command { std: "docker" "start" "-a" "a3f494d42053953bee55c236623043231d28083f5dc67ef1641967b749af51fe", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "rm" "-f" "a3f494d42053953bee55c236623043231d28083f5dc67ef1641967b749af51fe", kill_on_drop: false }`
[INFO] [stdout] a3f494d42053953bee55c236623043231d28083f5dc67ef1641967b749af51fe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 363c633fbf28cc40fe8967d46c3d730e3f16714a38ba68b6707fbaf5d685fd7e
[INFO] running `Command { std: "docker" "start" "-a" "363c633fbf28cc40fe8967d46c3d730e3f16714a38ba68b6707fbaf5d685fd7e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.142
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling tinyvec_macros v0.1.1
[INFO] [stderr]    Compiling unicode-bidi v0.3.13
[INFO] [stderr]    Compiling matches v0.1.10
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[INFO] [stderr]     Checking generic-array v0.14.7
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[INFO] [stderr]     Checking unicode-normalization v0.1.22
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[INFO] [stderr]    Compiling httparse v1.8.0
[INFO] [stderr]    Compiling pear_codegen v0.1.5
[INFO] [stderr]    Compiling devise_core v0.2.1
[INFO] [stderr]    Compiling tinyvec v1.6.0
[INFO] [stderr]     Checking cpufeatures v0.2.6
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling percent-encoding v2.2.0
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]    Compiling mime v0.2.6
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling unicase v1.4.2
[INFO] [stderr]    Compiling state v0.4.2
[INFO] [stderr]     Checking base64 v0.13.1
[INFO] [stderr]    Compiling smallvec v1.10.0
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[INFO] [stderr]    Compiling rocket_codegen v0.4.11
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[INFO] [stderr]     Checking unicode-xid v0.1.0
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[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking yansi v0.5.1
[INFO] [stderr]     Checking assert_float_eq v1.1.3
[INFO] [stderr]     Checking aes-gcm v0.8.0
[INFO] [stderr]     Checking conv v0.3.3
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[INFO] [stderr]    Compiling devise_codegen v0.2.1
[INFO] [stderr]    Compiling time v0.1.45
[INFO] [stderr]    Compiling num_cpus v1.15.0
[INFO] [stderr]     Checking getrandom v0.2.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_core v0.6.4
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[INFO] [stderr]    Compiling devise v0.2.1
[INFO] [stderr]     Checking rocket_http v0.4.11
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking gasplanner v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]  --> src/rock_bottom.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::TryFrom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryFrom` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `String` is imported redundantly
[INFO] [stdout]  --> src/rock_bottom.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::string::String;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `String` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `conv` is imported redundantly
[INFO] [stdout]  --> src/rock_bottom.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use conv;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/main.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | extern crate conv;
[INFO] [stdout]   | ------------------ the item `conv` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/main.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `TryFrom` is imported redundantly
[INFO] [stdout]  --> src/rock_bottom.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::convert::TryFrom;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:148:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `TryFrom` is already defined here
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `String` is imported redundantly
[INFO] [stdout]  --> src/rock_bottom.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::string::String;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]  --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:144:13
[INFO] [stdout]   |
[INFO] [stdout]   = note: the item `String` is already defined here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `conv` is imported redundantly
[INFO] [stdout]  --> src/rock_bottom.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use conv;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]  ::: src/main.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | extern crate conv;
[INFO] [stdout]   | ------------------ the item `conv` is already imported here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SAFETY_STOP_DEPTH` is never used
[INFO] [stdout]  --> src/rock_bottom.rs:7:7
[INFO] [stdout]   |
[INFO] [stdout] 7 | const SAFETY_STOP_DEPTH: f64 = 4.5;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ASCENT_RATE` is never used
[INFO] [stdout]  --> src/rock_bottom.rs:8:7
[INFO] [stdout]   |
[INFO] [stdout] 8 | const ASCENT_RATE: f64 = 9.14;
[INFO] [stdout]   |       ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `SAFETY_STOP_MINUTES` is never used
[INFO] [stdout]  --> src/rock_bottom.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 9 | const SAFETY_STOP_MINUTES: f64 = 3.0;
[INFO] [stdout]   |       ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Tank` is never constructed
[INFO] [stdout]   --> src/rock_bottom.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Tank {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Diver` is never constructed
[INFO] [stdout]   --> src/rock_bottom.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Diver {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Kit` is never constructed
[INFO] [stdout]   --> src/rock_bottom.rs:26:8
[INFO] [stdout]    |
[INFO] [stdout] 26 | struct Kit {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `gas_volume_cuft`, `tank_factor`, `pO2`, `breathable_at`, `with_volume`, and `add_volume` are never used
[INFO] [stdout]   --> src/rock_bottom.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Tank {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] 31 |     fn gas_volume_cuft(&self) -> Option<f64> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 37 |     fn tank_factor(&self) -> Option<f64> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     fn pO2(&self, depth_m: f64) -> f64 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 47 |     fn breathable_at(&self, depth_m: f64) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 51 |     fn with_volume(self, volume: f64) -> Option<Tank> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 63 |     fn add_volume(self, volume: f64) -> Option<Tank> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `rock_bottom_pressure_rec` is never used
[INFO] [stdout]   --> src/rock_bottom.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | impl Diver {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] 71 |     fn rock_bottom_pressure_rec(&self, depth_m: f64) -> Result<Vec<Tank>, &'static str> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `divide_gas_among` is never used
[INFO] [stdout]    --> src/rock_bottom.rs:109:4
[INFO] [stdout]     |
[INFO] [stdout] 109 | fn divide_gas_among<F>(tanks: Vec<Tank>, needed_gas: f64,  volume_allocator: &mut F) -> Result<Option<Vec<Tank>>, conv::PosOverflow<usize>>
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `atmospheres` is never used
[INFO] [stdout]    --> src/rock_bottom.rs:120:4
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn atmospheres(depth_m: f64) -> f64 {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pO2` should have a snake case name
[INFO] [stdout]   --> src/rock_bottom.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn pO2(&self, depth_m: f64) -> f64 {
[INFO] [stdout]    |        ^^^ help: convert the identifier to snake case: `p_o2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `name` is never read
[INFO] [stdout]   --> src/rock_bottom.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | struct Diver {
[INFO] [stdout]    |        ----- field in this struct
[INFO] [stdout] 21 |     name: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `pO2` should have a snake case name
[INFO] [stdout]   --> src/rock_bottom.rs:43:8
[INFO] [stdout]    |
[INFO] [stdout] 43 |     fn pO2(&self, depth_m: f64) -> f64 {
[INFO] [stdout]    |        ^^^ help: convert the identifier to snake case: `p_o2`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.93s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: traitobject v0.1.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "363c633fbf28cc40fe8967d46c3d730e3f16714a38ba68b6707fbaf5d685fd7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "363c633fbf28cc40fe8967d46c3d730e3f16714a38ba68b6707fbaf5d685fd7e", kill_on_drop: false }`
[INFO] [stdout] 363c633fbf28cc40fe8967d46c3d730e3f16714a38ba68b6707fbaf5d685fd7e